鬼頭忠兵衛商店 List of Products and Services

By installing it in the drainage pit of the field, it suppresses the outflow of rainwater from the field during heavy rain. Lineup ■ KMT1 Type: A type that changes the adjustment plate itself We will custom-make an adjustment plate made of PVC to match the existing drainage pit. Please provide the dimensions. ■ KMT2 Type: A type that is placed on top of the existing adjustment plate A PVC product will be placed on top of the adjustment plate you are currently using. Standard products are compatible with drainage pit openings of 205 mm or more and adjustment plate thicknesses of 15 mm or less. Custom dimensions can also be produced. ■ KMT3 Type: A type that replaces the entire drainage pit The main body is made of resin, making it lightweight and easy to replace. Additionally, the drainage pipe connection ports are available in PVC pipe standards ranging from 100 mm to 200 mm. *For more details, please refer to the PDF materials or feel free to contact us.

• Agricultural civil engineering works
• Disaster prevention supplies
• Flood prevention facilities, fire tanks, and flood control ponds

Features of our Weep Hole (Backflow Preventer and Flap Valve) 1. Can be used for both the bottom and side wall. 2. Easy to install as there is no need to align the product's orientation during construction. 3. The rubber valve, which is essential for water stoppage, can be replaced. 4. We manufacture longer types of weep holes according to the specified length based on concrete thickness. 5. Short delivery times due to in-house production. 6. Various types of weep holes are available to suit different applications. 7. One of the oldest companies among existing weep hole manufacturers. For details on the lineup, please see the individual product pages. ■ KMV Type: The most common weep hole (newly added diameter 30 in February 2022) ■ KMVH Type: Weep hole with socket ■ KMVS Type: Weep hole for sheets ■ KMVY Type: Weep hole for sheet piles ■ KMVA Type: Weep hole for underdrains ■ KMVC Type: Insert type weep hole ■ KMVK Type: Insert type weep hole with slope ■ KMVI Type: Driven weep hole ■ KMVM Type: Weep hole for troughs ■ KMVT Type: Weep hole for tunnels ■ KMVN Type: Weep hole with screw

• Drainage material
• Agricultural civil engineering works
• Watergate

The "KMV type" is the most common weep hole (backflow prevention valve) used to prevent cracks, uneven settlement, and uplift in structures due to uplift pressure and scouring effects from infiltrating water or seepage flow. Excessive groundwater pressure pushes the rubber valve up, releasing water into the drainage channel and preventing cracks and uplift in the structure. Additionally, when the water level in the drainage channel is high, the rubber valve closes due to the water pressure in the channel, preventing water leakage and scouring effects. There is a jig for attaching the weep hole to the formwork (for KMV-50 and KMV-75). 【Features】 ■ The length of the weep hole is manufactured according to the specified dimensions based on the thickness of the concrete (approximately 100 units can be shipped the same day with AM order). ■ The structural device is simple, reducing the risk of failure. ■ The rubber valve is supported at the center, so there is no construction directionality regarding which side should face up or the angle during installation. It can be used for both the bottom and side wall. ■ The rubber valve is made of a special synthetic rubber, providing good heat resistance, cold resistance, and weather resistance. ■ The rubber valve can be replaced. Adhesive is applied to the screw holes during installation, eliminating the risk of the rubber valve detaching. *For more details, please refer to the PDF document or feel free to contact us.

• Piping materials (plastic pipes)
• Flood prevention facilities, fire tanks, and flood control ponds
• Drainage and water removal

We would like to introduce the KM-type Weep Hole Mounting Jig (for 50V and 75V) that we handle. The Weep Hole Mounting Jig is a component used to attach the weep hole to the formwork. Depending on the type of filter used on the ground side, it is differentiated into "Type 1 Mounting Jig" and "Type 2 Mounting Jig." The "Type 1 Mounting Jig" has flanges that allow our red filter, known as the "eye plate," to be flush with the concrete surface, while the "Type 2 Mounting Jig" is used when employing our "drainage filter" or "eye plate filter." 【Features】 <Type 1 Mounting Jig> ■ Flanges are attached so that the eye plate is flush with the concrete surface. <Type 2 Mounting Jig> ■ Convenient for use with drainage filters and eye plate filters. *For more details, please refer to the PDF document or feel free to contact us.

• Work tools

The "KMVH type" is a product that has a socket attached to the weep hole head (water channel side). As a result, the main body of the weep hole becomes an inner pipe during the installation of the formwork, allowing it to be fixed using separators and other tools. Additionally, the head component (water channel side, rubber valve component) and the eye plate are attached after the formwork is removed. 【Features】 ■ The length of the weep hole is manufactured according to the specified dimensions based on the thickness of the concrete (approximately 100 units can be shipped the same day with AM orders). ■ The structural device is simple, reducing the risk of failure. ■ The rubber valve is supported at the center, so there is no directional requirement during installation regarding which side should face up or the angle; it can be used for both the bottom and side wall. ■ The rubber valve is made of a special synthetic rubber, providing good heat resistance, cold resistance, and weather resistance. ■ The rubber valve can be replaced. Adhesive is applied to the screw holes during installation, eliminating the risk of the rubber valve detaching. *For more details, please refer to the PDF document or feel free to contact us.

• Piping materials (plastic pipes)
• Flood prevention facilities, fire tanks, and flood control ponds

The "KMVS type" is a backflow prevention valve that has a plate (flange) attached to the center of the KM type weep hole. A sheet is placed on the lower plate and secured with the upper plate, allowing it to be attached to a waterproof sheet (vinyl-based or rubber-based) for use. It can be used with a sheet thickness of up to approximately 10mm, and a coconut fiber filter is built into the inside of the eye plate on the water inflow side. If protective soil or protective concrete is to be applied over the sheet, it can be manufactured to the specified length. Additionally, extensions can be made on either the pond side or the ground side of the plate. 【Features】 - The waterproof sheet is sandwiched between the plates of the weep hole, allowing for use with a sheet thickness of approximately 10mm. - The weep hole rubber valve is supported in the center, with no specific installation direction or angle required, making it usable for both the base and slope sections. *For more details, please refer to the PDF materials or feel free to contact us.

• Flood prevention facilities, fire tanks, and flood control ponds
• Piping materials (plastic pipes)

The "KMVY type" is a weep hole (backflow prevention valve) designed for installation in steel sheet piles. It can be installed on sheet piles up to 28mm thick, and if particularly long installation bolts are used, it can also be installed on thicker piles. The 50mm diameter version has a coconut fiber filter built into the main body, while the 75mm and 100mm versions have a non-woven fabric filter attached to the surface of the strainer. When pouring concrete on the waterway side of the sheet pile, it can be manufactured to the specified length according to the thickness of the concrete. 【Features】 ■ Can lower the water level behind the sheet pile to the level of the weep hole installation ■ Can be installed on sheet piles up to 28mm thick, and with particularly long installation bolts, it can also be installed on thicker piles ■ Installation work can be done from the front side of the sheet pile (excavation side) ■ The weep hole rubber valve is supported at the center, allowing for flexibility in installation direction and angle without specific construction orientation *For more details, please refer to the PDF document or feel free to contact us.

• Piping materials (plastic pipes)
• Flood prevention facilities, fire tanks, and flood control ponds

The "KMVA type" is a backflow prevention valve used when installing underdrains to prevent floating in waterways, etc. It can be easily installed by adhesively attaching it to the riser pipe of the underdrain. Its simple structural design minimizes the risk of failure. Additionally, the weep hole rubber valve is supported at the center, allowing for no specific installation direction or angle requirements during construction. 【Features】 ■ Easy installation by adhesively attaching it to the riser pipe of the underdrain ■ No specific installation direction or angle requirements ■ Simple structural design minimizes the risk of failure ■ The rubber valve is made of special synthetic rubber, offering good heat resistance, cold resistance, and weather resistance ■ The valve can be replaced by tightening the screws firmly *For more details, please refer to the PDF document or feel free to contact us.

• Piping materials (plastic pipes)
• Flood prevention facilities, fire tanks, and flood control ponds

We would like to introduce the KM-type insertable weep hole (backflow prevention valve) 'KMVC type / KMVK type' handled by Kito Tadahei Co., Ltd. This product is a retrofit type weep hole used when the drainage pipes (VP pipes, VU pipes) are already installed within the concrete during repairs. For sloped walls, please use the "KMVK type (for slopes)." The slope type has a trimmed flange on the surface of the product. There are separate products for VP pipes and VU pipes. 【Product Lineup】 ■ KMVC type ■ KMVK type (for slopes) *For more details, please refer to the PDF document or feel free to contact us.

• Piping materials (plastic pipes)
• Flood prevention facilities, fire tanks, and flood control ponds

We would like to introduce the KM-type Weep Hole (Backflow Prevention Valve) 'KMVI Type' handled by Kitou Tadaemon Store. This product is a convenient weep hole for the renovation of existing waterways, featuring a driving tip (also serving as a filter) attached to the ground side tip of the conventional KM-type weep hole. Available diameters are φ50 and φ75. 【Features】 ■ Convenient for the renovation of existing waterways ■ A driving tip (also serving as a filter) attached to the ground side tip of the conventional KM-type weep hole ■ Available diameters are φ50 and φ75 *For more details, please refer to the PDF document or feel free to contact us.

• Piping materials (plastic pipes)
• Flood prevention facilities, fire tanks, and flood control ponds

The KM-type weep hole is a drainage pipe equipped with a backflow prevention valve. Traditionally, it has been used to drain excessive groundwater into drainage channels. The 'KMVM type' has reversed the installation direction of the valve compared to conventional designs, allowing water within the structure to drain outside while preventing external groundwater from entering the structure. This is a KM-type weep hole for troughs. 【Nominal Diameter Lineup】 ■φ40 ■φ50 ■φ75 ■φ100 *For more details, please refer to the PDF document or feel free to contact us.

• Piping materials (plastic pipes)
• Flood prevention facilities, fire tanks, and flood control ponds

The "KMVT type" is a weep hole (backflow prevention valve) used in tunnels. On-site, the guide pipe section and filter section are connected by inserting them together. Basically, there is no backflow prevention valve included, but a type with a backflow prevention valve is also available. (Please use the type with a backflow prevention valve when installing below the water surface.) The length of the guide pipe section is manufactured according to the specified length based on the thickness of the lining concrete. The length of the filter section is 478 mm, but custom lengths can also be produced. Please feel free to contact us when placing an order. 【Materials】 ■ Cap: PVC JIS25 ■ Casing: PVC pipe VP25 ■ Screen: Non-woven fabric ■ Socket: JIS25 ■ Guide pipe: PVC pipe VP25 ■ Rubber O-ring: 32×51.4φ * For more details, please refer to the PDF document or feel free to contact us.

• Tunnel Materials
• Tunnel construction
• Drainage and water removal

This is a weep hole that allows for the removal and replacement of the "backflow prevention valve and filter" as a whole. The diameter is only φ50. This product is divided into the "main body (including the filter of the weep hole)" and the "fixed part" for securing the weep hole to the waterway retaining wall, and it integrates by being twisted together like a screw.

• Drainage material
• Renovation and repair methods
• Agricultural civil engineering works

Features of Our Simple Flap Gate 1. The main body is made of PVC, making it convenient for easy installation of flap gates. 2. Being made of PVC, it is lighter and more affordable compared to metal products. 3. The KMGH and KMGC types are fixed with adhesive, making installation easy. 4. There are products available that correspond to three different installation methods to suit the site. For details on the lineup, please refer to the individual product pages. ■ KMG Type: A type fixed to the retaining wall with anchor bolts. It is installed to cover the discharge outlet, allowing use without being restricted by the shape of the outlet. The compatible size for the discharge outlet is up to 1,000mm square. ■ KMGH Type: A type that covers the outside of the PVC pipe. It is convenient for new installations. The compatible size ranges from a diameter of 50mm to 600mm. ■ KMGC Type: A type that is inserted and fixed inside the PVC pipe or flue pipe. It can be easily retrofitted to existing pipes. The compatible size ranges from a diameter of 75mm to 400mm. *For more details, please refer to the PDF materials or feel free to contact us.

• Watergate
• River construction
• Tensioning and connecting blocks

The "KMG type" is a simple flap gate (backflow prevention valve) made of PVC, installed on the waterway side of drainage pipes such as rainwater drainage pipes, to prevent backflow during rising water levels. Under normal conditions, it allows rainwater drainage to flow into the waterway, and during rising water levels, the flap gate closes to prevent backflow. Recently, there has been an increase in its use for drainage pipes installed on river parapet walls. It is also used to prevent the intrusion of pests from drainage pipes and to act as a deodorizing valve. Since it is installed to cover the discharge outlet, it can be used without being restricted by the shape of the outlet. The main body is equipped with a watertight packing and is fixed with anchor bolts. The anchor bolts are included with the product. 【Features of KMG Type】 ■ The main body is made of PVC ■ Convenient for easily installing a flap gate ■ The main body comes with watertight packing ■ The main body is fixed using anchor bolts ■ Compatible outlet sizes up to 1,000mm square Custom sizes can also be produced as long as they do not exceed the maximum size. ■ Applicable water depth: KMG-100 to 800 is up to 2m, KMG-850 to 1000 is up to 1.5m ■ It does not provide 100% watertightness *For more details, please refer to the PDF document or feel free to contact us.

• Watergate
• Port supplies
• Piping materials (plastic pipes)

The "KMGH type" is a simple flap gate (backflow prevention valve) with a socket, installed on the waterway side of drainage pipes such as rainwater drainage pipes, to prevent backflow during rising water levels. Under normal conditions, it allows rainwater drainage to flow into the waterway, and during flooding, the flap gate closes to prevent backflow. Recently, there has been an increase in its use for drainage pipes installed on the parapet walls of rivers. It is also used to prevent odors and the entry of pests from drainage pipes. It is fixed by being covered over the outside of PVC pipes. For diameters 50 and 65, to prevent clogging, the connection diameter is the same as the nominal diameter, but the valve diameter is enlarged to 75mm. 【Features of KMGH Type】 ■ The main body is made of PVC ■ Convenient for easily installing a flap gate ■ The main body is covered over the outside of the PVC pipe and fixed with adhesive, making it useful for new installations ■ Compatible sizes range from 50mm to 600mm in diameter ■ Applicable water depth: up to 2m ■ It does not provide 100% watertightness *For more details, please refer to the PDF document or feel free to contact us.

• Piping materials (plastic pipes)
• Watergate
• Port supplies

The "KMGC type" is a plug-in type simple flap gate (backflow prevention valve) installed on the waterway side of drainage pipes such as rainwater drainage pipes to prevent backflow during rising water levels. Under normal conditions, it allows rainwater to flow into the waterway, and during flooding, the flap gate closes to prevent backflow. Recently, there has been an increase in its use for drainage pipes installed on the parapet walls of rivers. It is also used to prevent odors and the entry of pests from drainage pipes. It can be easily installed by inserting it into existing pipes, making it convenient for later installation. The shape and installation method vary depending on the nominal diameter, so please specify the pipe diameter and type when ordering. <With flange type> for diameters from 75 mm to 150 mm If the surface of the pipe you wish to install this diameter (type) on has a slope, please request a sloped processing product. <Without flange type> for diameters from 200 mm to 400 mm Products of this diameter (type) can be used with or without a slope. *For more details, please refer to the PDF document or feel free to contact us.

• Piping materials (plastic pipes)
• Watergate
• Port supplies

We would like to introduce the "filters" that we handle. Our filters are not only suitable for use in weep holes installed in water channels but also come in various types that can be used as anti-suction materials for drainage pipes in road retaining walls, and we have a rich inventory available. In particular, the KMC type insert filter is unique in that it can be installed simply by inserting it from the surface of the water channel or road into the drainage pipe. Since there is no need to excavate the ground side, it excels in safety and short construction periods, which also helps keep construction costs low. For details on the lineup, please refer to the individual product pages: ■ KMK type - Collection filter (basket type) ■ KMO type - Collection filter (effective pipe type) ■ KMON type - Collection filter (with non-woven fabric) ■ KMF type - Filter box ■ KMP type - Cup filter ■ KMM type - Sieve filter ■ KMD type - Drain mat ■ KMC type - Insert filter (new φ30 version added in February 2022) ■ KMKK type - Pipe mouth filter (newly launched in October 2022) *For more details, please refer to the PDF materials or feel free to contact us.

• Drainage material
• Slope protection material

The "KMK type" is a collection filter (basket type) made of ABS polyethylene resin. By inserting and installing this product into the backfill area of the weep holes provided in drainage channels, it prevents the outflow of soil and other materials from the backfill area while simultaneously increasing the collection area, allowing for smooth water discharge. It is a medium-sized filter with a larger collection area compared to the KMO type collection filter (effective pipe type). It can also be used as a material to prevent suction in drainage pipes of road retaining walls. Please feel free to contact us when you need assistance. 【Lineup】 ■KMK-50 ■KMK-75 *For more details, please refer to the PDF document or feel free to contact us.

• Drainage material
• Drainage and water removal

The "KMO type / KMON type" is a perforated pipe-type water drainage filter with a large catchment area that enhances drainage effectiveness. By inserting and installing this product into the backfill section of weep holes provided in drainage channels, it prevents the outflow of soil and other materials from the backfill section while simultaneously increasing the catchment area, allowing for smooth water discharge. It is a compact filter with a larger catchment area compared to the KMM type plate filter and KMP type cup filter. It can also be used as a material to prevent suction in drainage pipes of road retaining walls. The KMO type has slits of 6.5 mm in diameter on the side and 3 mm in cross-section. The KMON type features a non-woven fabric filter installed on the outer circumference of the KMO type. 【Features】 ■ Large catchment area, enhancing drainage effectiveness ■ Simple structure with a low risk of failure ■ Made of synthetic resin, offering good corrosion resistance, heat resistance, cold resistance, and weather resistance ■ Standard length is 100 mm, but custom lengths can also be produced ■ Available in two types: basic type (KMO type) and non-woven fabric type (KMON type) *For more details, please refer to the PDF document or feel free to contact us.

• River construction
• Drainage material
• Drainage and water removal

The "KMF type" is a catchment filter box made of synthetic resin (polyethylene) with a simple structure, sufficient strength, and excellent corrosion resistance, heat resistance, cold resistance, and weather resistance. By fixing this product to the concrete retaining wall with nails in the backfill area of the weep holes installed in drainage channels, it prevents the outflow of soil and other materials from the backfill area while simultaneously increasing the catchment area, allowing for smooth water discharge. It is a large filter with a larger catchment area compared to the KMK type catchment filter (basket type). It can also be used as a material to prevent suction in drainage pipes of road retaining walls. After attaching this product to the retaining wall with concrete nails, the filter material (crushed stone) can be placed inside the box, allowing for easy installation on the retaining wall in a lightweight state. 【Features】 ■ The weight of the main body during installation is lightweight (approximately 720g) ■ The filter material can be freely selected according to the site conditions, preventing the outflow of soil ■ The size is large for a filter container, allowing for sufficient filter material to be placed ■ The filter material is securely held, ensuring that there is no reduction in the effectiveness of preventing soil outflow and water drainage *For more details, please refer to the PDF document or feel free to contact us.

• Drainage material
• River construction
• Drainage and water removal

The "KMP type" is a cup filter for drainage pipes that is inserted and attached to retaining walls, drainage channels, etc., to prevent the outflow of soil and sediment from the backfill area. By inserting this product into the backfill area of weep holes provided in drainage channels, it helps prevent the outflow of soil and sediment while allowing smooth water drainage. The cup contains a coconut fiber filter to prevent suction. It can also be used as a suction prevention material for drainage pipes in road retaining walls. It can be installed simply by inserting it into the drainage pipe and is compatible with slopes of approximately 1:3. It is suitable for both VP and VU pipes. When backfilling with materials that have a high content of cohesive soil, please use a sand and gravel filter layer in conjunction. Additionally, we also offer the sieve filter "KMM type." 【Features】 ■ Can be installed simply by inserting it into the drainage pipe ■ Compatible with slopes of approximately 1:3 ■ Designed with a special shape to accommodate slopes ■ Suitable for both VP and VU pipes ■ When backfilling with materials that have a high content of cohesive soil, please use a sand and gravel filter layer in conjunction *For more details, please refer to the PDF document or feel free to contact us.

• Drainage material
• River construction
• Drainage and water removal

The "KMM type" is a filter that can be easily attached to drainage pipes, retaining walls, and other water drainage systems with a single touch. By inserting this product into the backfill area of weep holes provided in drainage ditches, it prevents the outflow of soil and other materials from the backfill area, allowing for smooth water drainage. It can also be used as a suction prevention material for drainage pipes in road retaining walls. Installation is as simple as inserting it into the drainage pipe, and it is compatible with slopes of approximately 3:1. It is suitable for both VP and VU pipes. When backfilling with materials that contain a lot of cohesive soil, please use it in conjunction with a sand and gravel filter layer. 【Features】 ■ Can be installed simply by inserting it into the drainage pipe ■ Compatible with slopes of approximately 3:1 ■ Designed with a special shape to accommodate slopes ■ Suitable for both VP and VU pipes ■ When backfilling with materials that contain a lot of cohesive soil, please use it in conjunction with a sand and gravel filter layer *For more details, please refer to the PDF document or feel free to contact us.

• Drainage material
• River construction
• Drainage and water removal

The "KMD type" is a drainage mat that can be easily attached to drainage pipes in waterways, retaining walls, etc. with a one-touch mechanism. By inserting and installing this product into the backfill area of weep holes provided in drainage ditches, it prevents the outflow of soil and sediment from the backfill area while simultaneously increasing the catchment area, allowing for smooth water discharge. It is a large filter with a greater catchment area compared to the KMK type catchment filter (basket type). It can also be used as a material to prevent suction in drainage pipes of road retaining walls. It is lightweight, making transportation and installation easy. We will prepare connection pins according to the pipe diameter, so please let us know the diameter (from 40mm to 150mm). 【Features】 - The inner core material has a filament structure, allowing for larger gaps. - The use of non-woven fabric filters enhances drainage and collection efficiency by increasing permeability. - It is strong against compression and impact. - There is no significant decrease in drainage performance. - Its lightweight design makes transportation and installation easy. - It can be easily attached to drainage pipes. *For more details, please refer to the PDF document or feel free to contact us.

• Drainage material
• River construction
• Drainage and water removal

The "KMC type" is a retrofittable filter material (anti-suction material) that is effective when sediment is being drawn out from existing drainage pipes (PVC pipes) of retaining walls, embankments, etc. When sediment is drawn out, a cavity forms on the backfill side, increasing the risk of collapse and breach, creating a dangerous situation. The unique aspect of the KMC type insert filter is that it can be installed simply by inserting it from the surface of the waterway or road into the drainage pipe. Since there is no need to excavate the ground side, it excels in safety and short construction periods, which also helps keep construction costs low. Please consider using this product for anti-suction measures in such cases. It is compatible with both VP and VU pipes. Note: It is assumed that the drainage pipe is a PVC pipe. If there is only a hole in the concrete, installation may not be possible depending on the condition of the hole's surface. If there is only a hole, please be sure to contact us. 【Components】 ■ Filter: Synthetic fiber ■ Head: ABS resin ■ Pin: SUS - Use one piece for up to 50 - Use two pieces for 60 and above *For more details, please refer to the PDF document or feel free to contact us.

• Drainage material
• Drainage and water removal
• Retaining wall

The "Mizuguchi Pipe" is used for distributing water from a small irrigation channel to the fields. It features a resin-made water intake valve, diverter, and distribution valve that can be opened upwards during water distribution to allow water flow. Features of our Mizuguchi Pipe: 1. The flow rate can be freely adjusted according to the valve opening degree. 2. Models W1 to W4 can be opened and closed in the direction preferred by the user. It is recommended to open towards the upstream side. By installing the valve stopper screw on the downstream side, you can prevent the valve from opening due to water flow. 3. The length of the product is kept short so that the socket does not protrude from the irrigation channel. If there is a long distance from the channel to the field, it can be extended with PVC pipes. 4. The product's socket part has a protrusion that prevents the product from detaching from the concrete due to the rotational force during operation. 5. A type with a filter is also available, which prevents trash such as empty cans and plastic bags from flowing into the fields. 6. If you want to stop the water flow for an extended period, please consider the KMW5 model's dedicated cap. (The filter and the W5 model's dedicated cap cannot be used together.) 7. Custom sizes for models KMW6 to W8 can also be manufactured. 8. Custom-made gate-type products processed from PVC sheets are also available.

• Watergate
• Drainage material
• Gutters and U-shaped gutters

The KMW1 type is used for distributing water from small irrigation channels to fields. It features a resin intake valve, diverter valve, and distribution valve that can be opened left or right to allow water flow during distribution. It connects by being placed over the outside of PVC pipes, making it suitable for new installations. Compatible with both VP and VU pipes. Features of our water outlet pipe: 1. The flow rate can be freely adjusted according to the opening degree of the valve. 2. Sizes are available from 40mm to 200mm in accordance with PVC pipe standards. For sizes larger than 200mm, the KMW6 type (with a gate-like adjustable plate that slides up and down) will be used. If installed in a deep location, consider the KMW3 type with a lever. 3. The valve can open in either direction, allowing users to choose their preferred direction. Even if one side is blocked by a wall or similar, it can still be opened from the other side. It is recommended to open towards the upstream side. Installing the valve stopper screw on the downstream side can prevent the valve from opening due to water flow. 4. A type with a filter is also available, which prevents trash such as empty cans and plastic bags from flowing into the fields. 5. If you want to stop water flow for an extended period, consider the KMW5 type dedicated cap. (The filter and the W5 type dedicated cap cannot be used together.) Continued with basic information.

• Gutters and U-shaped gutters
• Agricultural civil engineering works

The KMW2 type is used for distributing water from small irrigation channels to fields. It features a resin intake valve, diverter, and distribution valve that can be opened to the left or right to allow water flow during distribution. It is designed for retrofitting as it is inserted inside PVC pipes. There are separate products for VP pipes, VU pipes, and fume pipes. Please specify the pipe diameter and type when ordering. Features of the KMW2 type: 1. The flow rate can be freely adjusted according to the valve opening degree. 2. Sizes are available to match the standards of PVC pipes, ranging from 75 mm to 250 mm in diameter. For pipes thicker than 250 mm, the KMW7 type (with a gate-like sliding adjustment plate) will be used. If installed in a deep location, consider the KMW4 type with a lever. 3. It can open in either direction, allowing users to choose their preferred opening direction. Even if there is a wall or obstacle on one side, it can still be opened on the other side. It is recommended to open it upstream. By installing the valve stopper screw on the downstream side, you can prevent the valve from opening due to water flow. 4. There is also a type with a filter that prevents debris such as empty cans and plastic bags from flowing into the fields. Continued with basic information.

• Gutters and U-shaped gutters
• Agricultural civil engineering works

The KMW3 and KMW4 types are used for distributing water from small irrigation channels to fields. They feature a resin intake valve, dividing valve, and distribution valve that can be opened left and right to allow water flow during distribution. The KMW1 or KMW2 type with a lever attached. ■ KMW3 Type - A type with a lever added to the "KMW1 type" - Installed by covering the outside of PVC pipes, suitable for new installations. ■ KMW4 Type - Insert Type - A type with a lever added to the "KMW2 type" - Installed by inserting it inside existing distribution pipes, suitable for retrofitting. With the lever for opening and closing the valve, it allows for adjusting the water flow without having to reach deep into the installation site or putting hands in the water. It is mounted horizontally on the irrigation channel, and the lever operation is done in the vertical direction. Please attach the valve stopper screw (bolt) to the bottom side. Other than having a lever, its features are the same as the KMW1 and KMW2 types. Basically, the lever is fixed to match the site conditions. If it is difficult to match on-site, please consider using a "lever fixing device." There is also a type with a filter to prevent debris such as empty cans and plastic bags from flowing into the fields. If you want to stop the water flow for an extended period, please consider the KMW5 type dedicated cap. (The filter and the W5 type dedicated cap cannot be used together.)

• Gutters and U-shaped gutters
• Agricultural civil engineering works

The "KMW5 type" is a specialized cap for water pipes that enhances water-tightness during periods when irrigation is unnecessary, such as during crop rotation or fallow periods, by fitting inside the water pipe. It can also be used later on already installed water pipes. When ordering, please provide the specifications and nominal diameter of the water pipe you wish to use. It cannot be used simultaneously with water pipes that have filters. If you wish to stop the flow of PVC pipes or threaded fittings, please consider the KMQ type simple water stop plug. *For more details, please refer to the PDF document or feel free to contact us.

• Gutters and U-shaped gutters
• Agricultural civil engineering works

This is a part for fixing the lever with a pipe lever for KMW3 and KMW4 type water outlets to the retaining wall. Basically, the lever is fixed on-site. Please consider this when on-site adjustment is difficult. Small type: for KMW3-150 and KMW4-200 Large type: for KMW3-200 and KMW4-250 *For more details, please refer to the PDF document or feel free to contact us.

• Gutters and U-shaped gutters
• Agricultural civil engineering works

The "KMW6 type / 7 type / 8 type / X type" is used for distributing water from small irrigation channels to fields. The larger types can also be installed in a basin to distribute water to multiple channels. During distribution, the valve opens upwards, allowing water to flow through a PVC board water intake valve, distribution valve, and distribution valve. Features of our special specification water outlet pipe: 1. The flow rate can be freely adjusted according to the valve opening. 2. While standard stock items are available, custom sizes can also be manufactured. *For more details, please refer to the PDF materials or feel free to contact us.

• Gutters and U-shaped gutters
• Agricultural civil engineering works

The "KMW9 type" is a convenient extension lever for use in deep applications of the special water inlet pipe. It is compatible with the "KMW6 type," "KMW7 type," and "KMW8 type." To prevent damage, it comes with a bendable support that allows the upper part of the extension lever to bend inward when the adjustment plate is opened wide, ensuring it does not protrude too much from the top of the water channel. 【Features】 ■ Comes with a bendable support to prevent damage ■ When the adjustment plate is opened wide, the upper part of the extension lever bends inward to avoid excessive protrusion from the top of the water channel ■ Connects the extension lever to the adjustment plate of the special water inlet pipe on-site ■ Fixes the extension lever with anchor bolt components *For more details, please refer to the PDF document or feel free to contact us.

• Gutters and U-shaped gutters
• Piping materials (plastic pipes)
• Agricultural civil engineering works

By rotating the 90-degree elbow to change its height, water can be drawn from the waterway to the field and stopped, or water higher than the height of the 90-degree elbow can be drained from the rice field to the drainage channel. Conventional products simply used a 90-degree elbow inserted into a PVC pipe. With conventional products, every time you operated it, you had to remove the 90-degree elbow from the PVC pipe, adjust it to the desired angle, and then reinsert the 90-degree elbow, which made operation cumbersome. This screw-type elbow valve is threaded, allowing for operation (rotation) without removing the 90-degree elbow from the PVC pipe. *For more details, please refer to the PDF document or feel free to contact us.

• Watergate
• Drainage material
• Gutters and U-shaped gutters

KM Type Simple Water Stop Plug 'KMQ Type' This can be used when you want to temporarily stop the inflow (or outflow) from a PVC pipe. It can also be used as a replacement for screw-type manhole covers that have broken threads or have deteriorated and can no longer be used. When used as a replacement for screw-type manhole covers, it is suitable for VP pipes. KM Type Pipe Inlet Filter 'KMKK Type' Installed at the entrance of inflow pipes for rainwater retention and infiltration facilities to prevent the inflow of debris, etc. It can also be used to prevent small animals from entering through the drainage outlet of PVC pipes in gutters. *For more details, please refer to the PDF materials or feel free to contact us.

• Drainage and ventilation equipment
• Inspection hatches, manhole covers, and ditch covers
• Flood prevention facilities, fire tanks, and flood control ponds

By tightening the screws, the water-stopping packing expands and can be fixed (water-stopped) to the PVC pipe. Sizes are available from diameter 40mm to 200mm for VP pipes and separately for VU pipes. If you are using it as a replacement for a screw-type plug whose threads are damaged or degraded and cannot be used, please specify for VP pipes. Please clean the contact area between the PVC pipe and the water-stopping plug's packing before use. Remove the simple water-stopping plug when there is no water pressure in the PVC pipe. *For more details, please refer to the PDF document or feel free to contact us.

• Water stop
• Agricultural civil engineering works

It is installed by inserting it into the inside of the PVC pipe. It prevents the inflow of leaves and other debris into the inflow pipe of rainwater storage and infiltration facilities, as well as the entry of small animals from the drainage outlet of the gutter's PVC pipe. It is detachable, making cleaning easy. When debris accumulates, remove it for cleaning and reinstall it. To prevent debris from sticking to the surface, it has a structure that protrudes towards the catch basin. It is made of synthetic resin, so it does not rust. For large diameter (sieve type), products without handles can also be manufactured.

• Inspection hatches, manhole covers, and ditch covers
• Flood prevention facilities, fire tanks, and flood control ponds
• Drainage and ventilation equipment

The "Rice Field Valve" is used for the water supply outlet at the end of the field when water is supplied to rice fields via PVC pipes from open channels, reservoirs, etc. The water supply amount can be freely adjusted by turning the upper cover by hand. We offer two types: the low-pressure "KMB1 type" and the medium-pressure "KMB2 type." 【Features (KMB1 type)】 ■ Simple structure with low risk of failure ■ Made of synthetic resin (ABS), with excellent corrosion resistance, heat resistance, cold resistance, and weather resistance ■ O-rings are made of synthetic rubber (ethylene-propylene rubber), with good heat resistance, cold resistance, and weather resistance ■ There are binding holes for anti-rotation on the cover and socket ■ The cover has a unique shape to minimize water splashing during supply ■ There are two connection methods: one that inserts from the outside of KMB1 and another that inserts from the inside *For more details, please refer to the PDF document or feel free to contact us.

• Gutters and U-shaped gutters
• Piping materials (plastic pipes)
• Agricultural civil engineering works

The "KMB1 type" is a shut-off valve for pressure pipes used at the water supply point in the fields when supplying irrigation water from open channels, reservoirs, etc., via PVC pipes (pipeline). The water supply volume can be freely adjusted by turning the upper cover by hand. Please use it at locations with a water supply pressure of approximately 0.2 kg/cm² (water level difference of 2m) or less. 【Features】 ■ Simple structure with low risk of failure ■ Made of synthetic resin (ABS), with excellent corrosion resistance, heat resistance, cold resistance, and weather resistance ■ O-ring made of synthetic rubber (ethylene-propylene rubber) - Excellent heat resistance, cold resistance, and weather resistance ■ Water supply volume can be freely adjusted by turning the upper cover by hand *For more details, please refer to the PDF document or feel free to contact us.

• Gutters and U-shaped gutters
• Agricultural civil engineering works
• Piping materials (plastic pipes)

The "KMB2 type" is a valve used at the water supply point in the field when supplying irrigation water to rice paddies through a pressure pipe (pipeline). The water supply volume can be freely adjusted by turning the upper cover by hand. Please use it at locations where the water supply pressure is approximately 4 kg/cm² at the end. The rubber packing is made of synthetic rubber (ethylene-propylene rubber), which has good heat resistance, cold resistance, and weather resistance. 【Features】 ■ Simple structure with low risk of failure ■ Made of synthetic resin (ABS), with good corrosion resistance, heat resistance, cold resistance, and weather resistance ■ Water supply volume can be freely adjusted by turning the upper cover by hand ■ There are binding holes for preventing rotation on the cover and socket ■ The cover has a unique shape to minimize water splashing during supply ■ Connection method uses a flange for JIS 5 kg *For more details, please refer to the PDF document or feel free to contact us.

• Gutters and U-shaped gutters
• Agricultural civil engineering works
• Piping materials (plastic pipes)

The "KMN type" is a permeable pipe designed to supply moisture by allowing rainwater and other sources to infiltrate from the surface into the ground through a mesh pipe. It can also be used for oxygen supply and underground infiltration of liquid fertilizers. The tip of the pipe features multiple ribs for added strength and is designed to minimize misalignment during insertion. 【Features】 ■ Allows surface water to permeate into the ground ■ Simple structure with low risk of malfunction ■ The mesh pipe uses a full mesh design for good drainage ■ The tip also has holes for effective water discharge ■ The upper dish is made of AAS resin, which has excellent corrosion, heat, cold, and weather resistance ■ The underground insertion can be done by covering with a VP pipe and driving it in slightly (except in cases with a lot of gravel) *For more details, please refer to the PDF document or feel free to contact us.

• Rainwater infiltration facilities
• Drainage material
• Landscaping materials

The "KMH type" is a drainage outlet installed on the embankment of rice fields, which adjusts the water level using a water level control plate. It is available in four types with pipe diameters ranging from φ100 to φ200. Since it is placed inside the embankment, it does not interfere with agricultural work. 【Features】 ■ Both the main body and the control plate are made of ABS resin, making it lightweight (approximately 2 kg). ■ Two control plates are used, and the upper control plate can be slid to adjust the water level. ■ The upper control plate is fixed by suspending it with a string from the top of the main body, allowing for easy and stepless height adjustment. ■ When the two control plates are removed, it opens fully to the bottom, making drainage easy. *For more details, please refer to the PDF document or feel free to contact us.

• Drainage material
• Agricultural civil engineering works

This is an inlet for water in a rice field that can be operated from the field side. It is useful when a water pipe cannot be installed to cover the waterway.

• Gutters and U-shaped gutters
• Agricultural civil engineering works