清水工業 List of Products and Services

The metal sheet shut-off valve can now be connected to various cast iron pipes without flanges. It is a metal sheet shut-off valve that has been bolted-less joined to polyethylene pipes for water distribution, which excels in seismic resistance according to JWWA K 144 standards. It can be connected using EF joints. 【Features】 - The PE pipe insertion port × flange type allows for conversion connections using flanges to PE pipes, PVC pipes, steel pipes, etc. - The PE pipe insertion port × insertion type can improve the seismic resistance of the piping by using G-Link and P-Link for GX type cast iron pipes, a disengagement prevention collar for K type cast iron pipes, and N-Link for NS type E pipes. - An epoxy resin powder coating is applied to both the inner and outer surfaces, and stainless steel is used for the valve rod, cap, and tightening bolts, achieving high durability and corrosion resistance. - Smooth opening and closing operations are facilitated by a resin thrust bearing.

• Drainage and ventilation equipment
• Water supply facilities

The soft-seal shut-off valve, which can be connected using EF joints, is designed for water distribution and features boltless connections with polyethylene pipes that meet the JWWA K 144 standard for diameters of 50 to 150 mm and the PTC K 03 standard for 200 mm, providing excellent seismic resistance. The main body of the shut-off valve is based on Excel Pro, which conforms to JWWA B120, and includes a 'stem lock function' to prevent valve damage due to over-torque. 【Features】 - The polyethylene pipe and soft-seal shut-off valve are securely joined using a sleeve, providing strength that can withstand detachment forces exceeding the breaking strength of the polyethylene pipe. - It allows for piping connections using EF joints, which have a wealth of proven performance and reliability. - The structure eliminates the flange on the valve rod, instead incorporating a thrust collar that prevents damage from over-tightening of the cap, utilizing the stem lock function. If excessive torque occurs, the friction resistance of the thrust collar stops the rotation of the valve rod, preventing damage to the valve rod and the threaded portion. - The slim design and sharp-edged rubber valve seat exhibit high sealing performance. - By eliminating flanges for the valve box and lid tightening, it has become lighter than conventional products, improving portability and workability.

• Drainage and ventilation equipment
• Fire extinguishing equipment

High-tension bolts are used for the assembly between the valve box and the auxiliary valve box, and it features a top GF specification. The valve body, valve rod, gland, stopper, lever, and bolts are made of stainless steel, providing excellent durability. Features: - The high-tension bolts used for the assembly between the valve box and the auxiliary valve box, along with the top GF specification, can withstand bending loads during earthquakes. - The stainless steel valve body SUS BALL has small holes that allow the expansion pressure from freezing on the outside to escape inward, preventing damage to the valve body due to freezing. - The valve body, valve rod, gland, stopper, lever, and bolts are made of stainless steel, ensuring excellent durability and allowing for safe long-term use. - The O-rings on both sides of the valve rod prevent water from entering the shaft area, reducing rust and corrosion at the shaft. - The 75mm×150L and 100mm sizes are full port and suitable for various continuous water perforation works. For more details, please contact us or download the catalog.

• Water and sewerage pipe fittings

High-tension bolts are used for the assembly between the valve box and the auxiliary valve box, and it features a top GF specification. Major components, including the valve box and valve body, are made of stainless steel, providing excellent durability and corrosion resistance. Features: - The high-tension bolts used for the assembly between the valve box and the auxiliary valve box, along with the top GF specification, can withstand bending loads during earthquakes. - The stainless steel valve body SUS BALL has small holes that allow the expansion pressure from freezing on the outside to escape inward, preventing damage to the valve body due to freezing. - Major components, including the valve box and valve body, are made of stainless steel, ensuring excellent durability and corrosion resistance, allowing for safe long-term use. For more details, please contact us or download the catalog.

• Water and sewerage pipe fittings

Air pockets that occur in the piping move along the upper part of the pipe in the direction of flow and accumulate at the peak point of the pipe. These air pockets hinder the flow of liquid, causing the pump to require more output and operating time than necessary. Additionally, in low-pressure and low-flow piping, it can lead to a complete stoppage of flow known as an "air lock." By properly installing air valves at locations where air pockets occur, it is possible to reduce the energy required for water delivery.

• pump

By properly exhausting the air in the piping with an air valve, we support the stabilization of water supply volume and the reduction of water supply energy. Features: - This cast iron air valve is optimal for high-pressure piping up to 4.0 MPa (supports exhaust only under pressure). - The rolling seal structure ensures long-term stable operation and water tightness. - Its simple design allows for easy maintenance. For more details, please contact us or download the catalog.

• Drainage and ventilation equipment
• Fire extinguishing equipment

The air layer created within the valve prevents the adhesion of foreign substances to the shut-off section, supporting the protection of the piping and the reduction of water supply energy through appropriate exhaust. Features: - The air layer generated by the low-position float and the triangular prism-shaped valve box blocks debris and foreign objects, preventing shut-off failures and operational issues. - The unique rolling seal structure prevents the valve seat from sticking. For more details, please contact us or download the catalog.

• Drainage and ventilation equipment
• Fire extinguishing equipment

By properly controlling the air in the piping with an air valve, we support the stabilization of water supply volume and the reduction of water supply energy. Features: - The rolling seal structure ensures stable operation and water-tightness over a long period. - The simple design allows for easy maintenance. - Made of reinforced nylon resin, it is a lightweight and compact air valve. For more details, please contact us or download the catalog.

• Drainage and ventilation equipment
• Fire extinguishing equipment

During water flow, a large amount of exhaust is performed, and after the water reaches the valve, the diaphragm-structured valve body closes gently, preventing sudden shut-off and suppressing water hammer. Features: - The diaphragm-structured valve operates gently and quietly, accommodating large exhaust and intake while preventing rapid pressure increases due to sudden shut-off. - The upper air valve performs pressure release exhaust. - Even when there is no water in the pipeline, the valve remains closed, preventing the intrusion of insects and foreign objects into the pipeline. - The rolling seal structure ensures long-term stable operation and water tightness. - By using a drain valve specification (with a ball valve), drainage can be performed from a 50mm drain outlet using only the operation of the ball valve. For more details, please contact us or download the catalog.

• Drainage and ventilation equipment
• Fire extinguishing equipment

It prevents the adhesion of foreign substances to the shut-off section by creating an air layer within the valve. You can choose from stainless steel (SCS14A) or nylon resin. Features: - A rapid air valve designed for use in medium to large diameter piping where fluids containing foreign substances flow. - The air layer created by the low-position float and conical valve box blocks debris and foreign substances, preventing shut-off failures and operational issues. - The unique rolling seal structure prevents the valve body from sticking. - It accommodates both exhaust and intake, preventing the piping from becoming vacuumed. - The water hammer prevention option protects the air valve and piping by reducing exhaust volume while maintaining intake performance. For more details, please contact us or download the catalog.

• Drainage and ventilation equipment
• Fire extinguishing equipment

The air layer created inside the valve prevents foreign substances from adhering to the shut-off section. You can choose from stainless steel (SCS14A) or nylon resin. Features: - This air valve is designed for use in piping where fluids containing foreign substances flow. - The air layer created by the low-position float and conical valve box blocks debris and foreign substances, preventing shut-off failure and operational issues. - The unique rolling seal structure prevents the valve seat from sticking. - It accommodates both exhaust and intake, preventing the piping from becoming vacuumed. - The water hammer prevention option protects the air valve and piping by reducing exhaust volume while maintaining intake performance. For more details, please contact us or download the catalog.

• Drainage and ventilation equipment
• Fire extinguishing equipment

It is compatible with Camel 50 (underground single outlet drainage valve 50mm) and rapid air valve φ25 (flange 50mm). Features: - It is a repair valve for water supply that complies with JWWA B 126. - Both the interior and exterior are coated with epoxy resin powder to suppress rust formation. - It can be connected to a JIS 50mm flange. - It can be used in conjunction with Camel 50 (underground single outlet drainage valve 50mm) and others. For more details, please contact us or download the catalog.

• Drainage and ventilation equipment
• Water and sewerage pipe fittings

The upper flange has a nominal diameter of 75 mm, and the lower flange has a nominal diameter of 100 mm, making it an ideal reducer valve for installing a 75 mm fire hydrant or air valve on a 100 mm riser pipe. Features: - This is a reliable repair valve compliant with JWWA B 126 standards. - With an upper flange of 75 mm and a lower flange of 100 mm, it is perfect for converting an existing double outlet fire hydrant to a single outlet fire hydrant or for changing a double outlet air valve from 100 mm to a rapid air valve of 75 mm. - By adopting a stainless steel (SCS13) ball valve body, it minimizes the occurrence of scratches due to sand and other debris. - Stainless steel is also used as standard for the valve rod, gland, stopper, lever, and bolts, achieving high durability and corrosion resistance. - Both the interior and exterior are coated with epoxy resin powder paint to suppress rust formation. For more details, please contact us or download the catalog.

• Drainage and ventilation equipment
• Water and sewerage pipe fittings

The valve rod, gland, stopper, lever, and bolt are made of stainless steel, achieving high durability and corrosion resistance. Features: - Complies with JWWA B 126 standards. - Stainless steel is used as standard for the valve rod, gland, stopper, lever, and bolt, achieving high durability and corrosion resistance. - The three O-rings on both sides of the valve rod prevent water from entering the shaft area, reducing the occurrence of rust and corrosion, allowing for safe long-term use. - Both the interior and exterior are coated with epoxy resin powder, suppressing rust formation. - It accommodates various burial depths with a wide range of interfacial lineups. - The 75mm x 150L and 100mm models are full port and suitable for various continuous water perforation works. For more details, please contact us or download the catalog.

• Drainage and ventilation equipment
• Water and sewerage pipe fittings

Stainless steel has been adopted for the valve rod, gland, stopper, lever, and bolt, achieving high durability and corrosion resistance. The stainless steel valve body prevents freezing damage to the valve body. Features: - Can be used as a repair valve for 150mm and 200mm rapid air valves, allowing for miniaturization of the air valve chamber. - By adopting a stainless steel (SCS13) ball valve body, it reduces the occurrence of scratches caused by sand biting into the valve body. - Stainless steel is standard for the valve rod, gland, stopper, lever, and bolt, achieving high durability and corrosion resistance. - The O-rings on both sides of the valve rod prevent water from entering the shaft, reducing the occurrence of rust and corrosion in the shaft area, allowing for safe long-term use. - Both the interior and exterior are coated with epoxy resin powder to suppress rust formation. - Available in two types: lever type and cap type. - Complies with the Tokyo Metropolitan Waterworks Bureau specifications. For more details, please contact us or download the catalog.

• Drainage and ventilation equipment
• Water and sewerage pipe fittings

The valve stem, gland, stopper, lever, and bolts are made of stainless steel, achieving high durability and corrosion resistance. The stainless steel valve body prevents freezing damage to the valve body. Features: - By adopting a stainless steel (SCS13) ball valve body, we reduce the occurrence of scratches caused by sand ingress and enhance resistance to leakage at the valve seat. - The valve stem, gland, stopper, lever, and bolts are all made of stainless steel as standard, ensuring high durability and corrosion resistance. - O-rings on both sides of the valve stem prevent water ingress into the shaft, reducing the occurrence of rust and corrosion in the shaft area. - Both the interior and exterior are coated with epoxy resin powder, which helps suppress rust formation. - A wide range of sizes is available to accommodate various burial depths. - The φ75×150L and φ100 models are full port and suitable for various constant water perforation works. For more details, please contact us or download the catalog.

• Drainage and ventilation equipment
• Water and sewerage pipe fittings

The "SCS14 model" also uses SCS14 stainless steel for the valve box. It is ideal for extending the lifespan of piping. Please use it in conjunction with the sewage air valve. Features: - By adopting a ball valve body made of SCS14, it minimizes corrosion caused by hydrogen sulfide generated from sewage. It also reduces the occurrence of scratches due to sand sticking to the valve body. - Stainless steel is used as standard for the valve rod, gland, and bolts, achieving high durability and corrosion resistance. - The seat uses PTFE with an extremely low friction coefficient, providing high sealing performance with low operating torque. - It can be used safely for a long period. - It supports various constant water perforation works with a full port. For more details, please contact us or download the catalog.

• Drainage and ventilation equipment
• Water and sewerage pipe fittings

The φ25-75mm is suitable for shallow burial. It is made of ductile cast iron (FCD450-10) and features reliable powder coating on both the inner and outer surfaces. Features: - The compact design makes φ25-75mm ideal for shallow burial. - Both the inner and outer surfaces are coated with epoxy resin powder to prevent rust. - The bolts are made of stainless steel (SUS304), ensuring long-term reliability. - The φ25mm has a floating valve body connected to a movable valve body, allowing for smooth and reliable operation through the principle of leverage. - The ball cock is made of stainless steel (SCS13) and includes a freeze damage prevention feature, ensuring reliability even with long-term use. A long lever type for easy operation is also available. - The φ25-100mm products are lead-free, containing no copper alloys with lead. For more details, please contact us or download the catalog.

• Drainage and ventilation equipment
• Fire extinguishing equipment

This is a stainless steel rapid air valve that can release the air trapped in the riser pipe of an underground fire hydrant. The connection part is a Machino-type female fitting of 65A, allowing for easy attachment and detachment to the nozzle section of the underground fire hydrant. Features: - Major components are made of stainless steel, providing excellent aesthetics and ensuring safe use over a long period. - The connection part is a plug-type intermediary fitting (Machino-type female 65A), enabling connection to the nozzle section of the underground fire hydrant (Machino-type male 65A). - It is ideal for short-term use to release air that tends to accumulate in the riser pipe of the fire hydrant during initial water flow, as residual air bubbles can easily collect there. - It is equipped with a pressure relief valve, allowing for the safe removal of the air valve by releasing residual pressure. - The exhaust performance meets the standard values of JWWA B 137 for rapid air valves used in water supply. - The floating valve body and the movable valve body are connected, applying the principle of leverage for smooth and reliable operation. For more details, please contact us or download the catalog.

• Drainage and ventilation equipment
• Fire extinguishing equipment

This is a rapid air valve designed for the use of air valves in forced exhaust, pipeline cleaning, and water supply operations, compatible with the installation of a dedicated ball plunger. *Our company does not handle the ball plunger body. Features: - By attaching the ball plunger body, the air valve can be used for various applications such as forced exhaust from the air valve, pipeline cleaning, and water supply operations. - Performance is equivalent to JWWA B 137 rapid air valves for water supply (excluding φ200 mm). - Both the inner and outer surfaces are coated with epoxy resin powder to suppress rust formation. - The pressure relief valve reduces the initial operating torque of the ball plunger. - It complies with the Tokyo Metropolitan Waterworks Bureau's specifications for water supply piping materials. For more details, please contact us or download the catalog.

• Drainage and ventilation equipment
• Fire extinguishing equipment

With its unique structure, disassembly (from opening the pressure relief valve to removing the float valve guide) takes about 15 seconds! The compact design achieves lightweight construction, making it easy to handle! By attaching the Machino-style nozzle, it can be used for a wide range of applications such as pipe cleaning, temporary water supply, and water pressure measurement. Features: - The positioning pin prevents assembly mistakes of the arm piston and indicates the correct assembly position, allowing for safe disassembly and assembly. - The standard model can be used for a wide range of applications such as pipe cleaning, temporary water supply, and water pressure measurement by attaching the optional Machino-style nozzle. (The built-in nozzle type can be used similarly by removing internal components.) - The compact design achieves lightweight construction, making it easy to handle. - The anti-fall protrusion at the bottom of the valve box prevents internal components such as the float valve body and the movable valve body from falling into the main pipe. - Both the inner and outer surfaces are coated with epoxy resin powder to suppress rust formation. - The bolts are made of stainless steel (SUS304), ensuring reliability for long-term use. For more details, please contact us or download the catalog.

• Drainage and ventilation equipment
• Fire extinguishing equipment

A rapid air valve made of stainless steel that enhances corrosion resistance and durability, contributing to the long lifespan of piping. The "SCS14" made of high corrosion-resistant stainless steel is also ideal for salt damage prevention. 【Features】 - The "SCS14" uses high corrosion-resistant stainless steel for all major components, including the valve body and cover, as well as bolts, significantly reducing the occurrence of rust and corrosion, while also providing excellent durability. - The exhaust performance meets the standard values of JWWA B 137 for rapid air valves used in water supply. - The cover is equipped with standard threads for pipe installation, allowing for easy attachment of piping at any time. By attaching piping, it prevents the spray generated during the operation of the air valve from scattering onto the main pipe, thus preventing corrosion of the main pipe. Additionally, by installing the optional dedicated emergency town nozzle (65A), it can be used for emergency water supply, etc. - It is a lead-free product that does not use any copper alloys containing lead. - The ball cock is equipped with a freeze damage prevention feature. For more details, please contact us or download the catalog.

• Drainage and ventilation equipment
• Fire extinguishing equipment

Due to its auxiliary valve function, maintenance can be performed without water interruption. The main components are made of stainless steel, providing excellent aesthetics and allowing for long-term, worry-free use. Features: - The main components are made of stainless steel, offering excellent aesthetics and allowing for long-term, worry-free use. - Performance is equivalent to JWWA B 137 water supply rapid air valve φ25mm. - Available in three types: Type 2, Type 3, and Type 4, compatible with many pipelines. - The water contact area is always in circulation due to the flow in the main pipe, making it less prone to freezing. - The auxiliary valve function allows for easy opening and closing, enabling disassembly and inspection without water interruption. - The valve seat of the auxiliary valve is made of stainless steel with a metal touch, allowing for shut-off with low torque. - The height dimension from the flange surface is kept low at 75mm, making it possible to install in places with height restrictions, such as bridge attachments, or where shallow burial is required. - The depth of entry from the flange surface is compactly designed at 95mm. For more details, please contact us or download the catalog.

• Drainage and ventilation equipment
• Fire extinguishing equipment

The JWWA B 137 rapid air valve for water supply has equivalent performance, and its lightweight and compact design make installation and maintenance easy. Features: - The built-in disc spring in the lid absorbs the expansion of water during freezing, preventing damage to the valve. - Major components are made of stainless steel, providing excellent aesthetics and long-term reliability. - Performance is equivalent to the JWWA B 137 rapid air valve for water supply with a diameter of 25 mm. - The flange type has a height of 242 mm and weighs 9 kg, making it lightweight and compact, ideal for shallow burial. - Installation in narrow spaces and disassembly and assembly during maintenance can be easily performed. - The floating valve body and the movable valve body are connected using a unique method that applies the principle of leverage, ensuring smooth and reliable operation. - The ball cock is made of stainless steel (SCS13) and has a freeze damage prevention feature, ensuring long-term use is safe. - It is a lead-free product that does not use any copper alloy containing lead. - By attaching an emergency town nozzle for air valves, pressure measurement and the installation of emergency water supply taps are possible. For more details, please contact us or download the catalog.

• Drainage and ventilation equipment
• Fire extinguishing equipment

By incorporating an 80mm step between the nozzle and the cap, we have maximized safety and operability during firefighting. Features: - It is a drainage valve for 50mm piping, and can also be used with underground fire hydrants and water supply valves. *Please pay attention to the water discharge volume when using it as a fire hydrant. - The use of stainless steel for the cap improves corrosion resistance and suppresses rust formation. - The main body is coated with powder paint on both the inner and outer surfaces, and stainless steel is used for key components such as the nozzle flange, ground, cap, valve rod, and bolts, achieving high durability and corrosion resistance. - It complies with the drainage valve specifications of the Yokohama City Waterworks Bureau. For more details, please contact us or download the catalog.

• Car and bicycle parking facilities
• Fire extinguishing equipment
• Water Supply Facilities

This is a reliable JWWA135 standard ball-type fire hydrant. Since 2013, the flange has been changed to stainless steel to suppress rust and enhance strength to withstand the use of standpipes. 【Features】 〇 This fire hydrant has passed the type test of JWWA B 135 standard. 〇 Compared to lift-type fire hydrants, it has a lower height dimension, making it ideal for shallow burial, and it is lightweight and compact. 〇 The ball-type structure allows for a straight flow of water, reducing flow loss. 〇 The specially processed valve box prevents jetting that occurs during minor openings for water flow confirmation. 〇 Both the inner and outer surfaces are coated with epoxy resin powder to suppress rust formation. 〇 By using stainless steel for the reduction gear, flange, fittings, push rings, ball valve body, and assembly bolts, high durability and corrosion resistance have been achieved. 〇 By adopting the same flange as the JWWA B 103 fire hydrant, rust formation is suppressed, and in the event of damage to the flange, the entire flange assembly can be easily replaced by simply removing the bolts. *For more details, please contact us or download the catalog.

• Car and bicycle parking facilities
• Fire extinguishing equipment
• Water Supply Facilities

The single port design protects the threaded section from sand and other debris by eliminating the nut from the assembly bolt, allowing for disassembly with just one T-shaped wrench. Stainless steel is used for the valve body, valve rod, and flange. The use of a hard lock nut at the valve seat holding section has improved workability during valve seat replacement. 【Features】 75mm - The nutless structure protects the threaded section from sand and other debris, and allows for disassembly with just one T-shaped wrench. There is no concern about galling of stainless steel bolts, enabling maintenance to be performed with confidence. - By using stainless steel for the flange, fittings, retaining ring, valve body, valve rod, and assembly bolts, high durability and corrosion resistance have been achieved. The use of a hard lock nut at the valve seat holding section has improved workability during valve seat replacement. - Exhaust valves and air valves are also available in the lineup. Common - Both the interior and exterior surfaces are coated with epoxy resin powder, providing excellent aesthetics and making it ideal for red water countermeasures. - The single and double ports are lift-type (valve rod rising) fire hydrants that meet JWWA B 103 standards. *For more details, please contact us or download the catalog.

• Car and bicycle parking facilities
• Fire extinguishing equipment
• Water Supply Facilities

By incorporating an 80mm step between the nozzle and the cap, we maximized safety and operability during use. Features: - The design is efficient, achieving both compactness of the product and a smooth flow path. - The use of stainless steel for the cap reduces issues such as paint peeling, paint flaking, and rust caused by aging. - The body is coated with powder on both the inside and outside, and key components such as the nozzle flange, ground, cap, valve rod, and bolts are made of stainless steel, ensuring high durability and corrosion resistance. The use of stainless steel for the bolts significantly improves durability and corrosion resistance. - The flange connection bolts are visible from the top, making installation and removal easy. - By eliminating nuts from the assembly bolts, the threaded parts are protected from sand and other debris, and disassembly maintenance can be performed with just a T-shaped wrench. For more details, please contact us or download the catalog.

• Car and bicycle parking facilities
• Fire extinguishing equipment
• Water Supply Facilities

The butterfly valve meets the JWWA B 138 standard and has equivalent performance, while being lower in height compared to standard products. Additionally, the structure has the operating cap at the center of the valve, making the installation of the valve chamber easier. 【Features】 - It adopts an eccentric structure where the valve rod does not pass through the rubber valve seat, resulting in less localized friction and fatigue on the rubber valve seat, allowing for safe long-term use. - The valve box seat area is coated with hard chrome, and the structure includes an O-ring type rubber valve seat on the valve body side, ensuring that the rubber valve seat is pressed adequately against the valve box seat area by fluid pressure, which reduces wear and fatigue on the rubber valve seat and provides balanced sealing. This structure improves sealing performance as the pressure increases. - Since the rubber valve seat is of the O-ring type, there is less resistance around the entire seat area, which reduces the operating torque during closure, allowing for smooth opening and closing. For more details, please contact us or download the catalog.

• Drainage and ventilation equipment

It has performance equivalent to the JWWA B 138 standard butterfly valve, and by attaching a flow control plate with comb-like notches and numerous holes on the downstream side of the valve body, it disperses the water flow into fine jet streams, suppressing the occurrence and growth of cavitation. With low vibration and low noise, it enables "throttling operation," which was considered difficult with conventional butterfly valves, allowing for extensive flow control. 【Features】 - The flow control plate with comb-like notches and numerous holes disperses the water flow into fine jet streams, compensating for the negative pressure on the downstream side of the valve body and suppressing the occurrence and growth of cavitation. - Since the flow control plate can suppress the occurrence and growth of cavitation, the cavitation characteristics are improved, making throttling operation possible, which was considered difficult with conventional butterfly valves. Additionally, the generated cavitation is finely dispersed, reducing the vibration and noise that occur during throttling operation and expanding the range of use. - The wetted surfaces on the inner side are coated with a powder coating known for its resistance to cavitation, enhancing durability and also effectively addressing red water issues. - It is compatible with both vertical and horizontal orientations. For more details, please contact us or download the catalog.

• Drainage and ventilation equipment

The valve rod adopts an eccentric structure that does not pass through the rubber valve seat, resulting in less localized friction and fatigue on the rubber valve seat. Additionally, the valve box seat area is coated with hard chrome, ensuring stable sealing performance. The structure is also designed to be simple, making it ideal for long-term use. 【Features】 - The eccentric structure that does not allow the valve rod to pass through the rubber valve seat minimizes localized friction and fatigue on the rubber valve seat, and the simple design ensures safe long-term use. - The valve box seat area is coated with hard chrome, and the structure includes an O-ring type rubber valve seat on the valve body side, allowing the rubber valve seat to be pressed against the valve box seat area by fluid pressure, which reduces wear and fatigue on the rubber valve seat and provides balanced sealing. Furthermore, this structure improves sealing performance as the pressure increases. - The O-ring type rubber valve seat results in less resistance around the entire seat area, reducing the operating torque during closure, allowing for smooth opening and closing. - It is compatible with both vertical and horizontal configurations. For more details, please contact us or download the catalog.

• Drainage and ventilation equipment

For diameters of 300mm or less, stainless steel is used for the valve rod and tightening bolts, improving durability and corrosion resistance. The inner and outer surfaces are standardly coated with epoxy resin powder, which helps prevent rust and is ideal for preventing red water. 【Features】 - For diameters of 300mm or less, stainless steel is used for the valve rod and tightening bolts, improving durability and corrosion resistance. - The inner and outer surfaces are standardly coated with epoxy resin powder, which helps prevent rust and is ideal for preventing red water. - The shaft section employs an O-ring sealing method, allowing for replacement even during water flow, making it suitable for maintenance management. - It comes with hooks and eye nuts for lifting, making it easy to handle during installation. For more details, please contact us or download the catalog.

• Drainage and ventilation equipment

This is a reliable metal seat partition valve based on the old JIS B 2062 partition valve, featuring ball bearings installed above and below the valve stem collar, achieving low torque and comfortable operability. The ball bearings are sealed and can be operated comfortably for many years thanks to high-performance lithium grease. 【Features】 - Ball bearings are installed above and below the valve stem collar, enabling light operation with low torque. - The ball bearings are sealed, maintaining stable operability for many years due to high-performance lithium grease. - The compact design results in a lower height dimension compared to the JIS B 2062 water supply partition valve. - The interior is standardly coated with epoxy resin powder coating, which helps prevent rust and is ideal for preventing red water. The exterior can also be optionally coated with epoxy resin powder coating. - It is optimal for pipelines concerned about rubber deterioration due to high concentrations of chlorine. For more details, please contact us or download the catalog.

• Drainage and ventilation equipment

Made of stainless steel, it excels in corrosion resistance and durability, allowing for safe use over long periods. The lost-wax casting method enhances its appearance and improves quality. 【Recommended Installation Locations】 Coastal areas, exposed piping, outdoor piping, difficult-to-replace installation locations, stainless piping, frequently used areas 【Features】 〇 The dimensions between faces and flange dimensions are compatible with JWWA B122. 〇 The gland section features an O-ring type that excels in water-stopping capability, making maintenance easy as it can be replaced even during water flow. 〇 The base is designed for easy storage and installation work (only for 7.5K). 〇 The 200 nominal diameter comes with a lifting eye nut. 〇 By changing the packing and other components to heat-resistant specifications, it can also be used for hot spring piping (hot spring specification). For more details, please contact us or download the catalog.

• Drainage and ventilation equipment

The valve body is lined with rubber, providing high water-stopping capability and preventing debris accumulation at the bottom of the valve. It features a rational design that maintains sufficient strength and stable functionality while being lightweight and compact. 【Features】 - This product has passed the JWWA B 120 type test. - It uses chlorine-resistant EPDM (EJV-70) for the rubber valve seat, significantly enhancing durability against chlorine. - The threaded connection is firmly press-fitted into the valve body, ensuring stable opening and closing operations without putting stress on the rubber lining of the valve body. - Both the valve box and valve body are equipped with long guides that have a large pressure-bearing area, allowing for stable operation over extended periods. - The valve body is wedge-shaped, resulting in low water-stopping torque and excellent water-stopping capability. - The compact design makes it easy to handle. For more details, please contact us or download the catalog.

• Drainage and ventilation equipment

JWWA B 120 is a product that integrates a soft-seal partition valve for water supply with K-shaped ductile iron irregular pipes at the receiving and insertion ends, unifying the joint direction of the pipeline and contributing to improved workability. 【Features】 〇 Since the entire pipeline can be unified with K-shaped joints, there are fewer restrictions on the installation position of the valve compared to conventional flange types. 〇 Excellent water tightness is achieved by a method that tightens the rubber ring with a pressing ring, strongly adhering the inner surface of the receiving end and the outer surface of the insertion end. 〇 It can be installed in a lighter and more compact manner than the combination of conventional flange types (K-shaped short pipe type 1 + flange type soft-seal partition valve + K-shaped short pipe type 2), reducing construction costs. 〇 The height dimension for the short (shallow burial) type can accommodate up to a nominal diameter of 200mm with a soil cover of 600mm. For more details, please contact us or download the catalog.

• Safety and consumables

The installation is simple, requiring only the insertion of the pipe and tightening of the nut. The claw ring firmly holds the outer circumference of the pipe to prevent disconnection. 【Features】 - After inserting the pipe into the valve, simply remove the spacer and tighten the nut, which shortens the installation time. - Since flange joints are not required, traditional PVC pipe fittings (such as short pipes and flanges) are also unnecessary, reducing total costs. - The claw ring and rubber ring sufficiently meet the disconnection prevention performance standards of the Japan Water Works Association (JWWA K 131). - It can also be used with steel pipes, making it suitable for temporary piping. - It is compatible with shallow burial for all nominal diameters. - Applicable pipe types: rigid polyvinyl chloride pipes (excluding VU pipes with a nominal diameter of 50mm), steel pipes, and polyethylene two-layer pipes for water supply (Type 1) (only for nominal diameter of 50mm). For more details, please contact us or download the catalog.

• Safety and consumables

High-grade repair valve that enhances corrosion resistance and durability by using stainless steel for key components including the valve box and valve body, based on the structure of JWWA B 126 water supply repair valves. It contributes to the long lifespan of pipelines. Please use it in conjunction with Classic Plus, Air Light rapid air valves, etc. Features: - Made of "SCS14," stainless steel is used for all key components including the valve box and valve body, as well as bolts, significantly reducing the occurrence of rust and corrosion, achieving high durability and corrosion resistance. - Since it is uncoated, there is no concern about cracking or chipping that can occur with internal and external powder coating, eliminating the need for repair painting. - The valve seat uses PTFE with an extremely low friction coefficient, providing high sealing performance with low operating torque. For more details, please contact us or download the catalog.

• Drainage and ventilation equipment
• Water and sewerage pipe fittings

This is a flange-type external screw soft-seal shut-off valve that complies with JWWA B 120 standards. The valve body is rubber-lined, providing high water-stopping capability, and the straight design of the valve bottom prevents debris accumulation. By eliminating flanges for the tightening of the valve box and cover, it has become lighter than conventional products.

• Drainage and ventilation equipment
• Water supply facilities

Valves such as shut-off valves and fire hydrants may experience damage, bending of the valve stem, or damage to the threaded parts due to excessive torque during opening and closing. The torque limiter prevents excessive torque from being applied to the target valve during operation by slipping (freewheeling) when the set torque is exceeded, thereby neutralizing the excessive torque that would burden the valve. During freewheeling, this device clicks and rotates, making it easy to determine when torque has been applied. Features: - The body is made of stainless steel (SCS13), providing excellent corrosion resistance and durability, allowing for safe long-term use. - It can withstand approximately 10,000 freewheeling (slip) operations as a guideline for usage. When the number of usable operations is exceeded, the operating torque of the limiter may decrease due to spring fatigue. In such cases, it can be addressed through spring replacement and repair (for a fee). - It can be used for training operators and to prevent product damage during actual operations. For more details, please contact us or download the catalog.

• Water supply facilities

This is a flange-type soft-seal shut-off valve that complies with JWWA B 120 standards. The valve body has a rubber lining, providing high water-stopping capability, and the straight design of the valve bottom prevents debris accumulation. It is equipped with a "stem lock function" to prevent bending of the valve stem and damage from excessive torque.

• Drainage and ventilation equipment
• Water supply facilities

This is a partition valve that meets the JWWA B 122 standard. The socket × socket type allows for the connection of metal sheet partition valves to various cast iron pipes without flanges. By using G-Link and P-Link for GX type cast iron pipes, and a disengagement prevention collar for K type cast iron pipes, the seismic resistance of the piping can be improved. The socket × flange type allows for conversion connections using flanges to PE pipes, PVC pipes, steel pipes, etc. The socket × PVC pipe receiving type allows for direct insertion and joining of rigid PVC pipes or steel pipes to the valve. The disengagement prevention performance is sufficiently demonstrated by the claw ring and rubber ring.

• Drainage and ventilation equipment

The soft-seal shut-off valve, which can be connected using EF joints, is designed for water distribution and features excellent seismic resistance. It is made of polyethylene pipes with nominal diameters of 50 to 150 mm according to JWWA K 144 standards, and for a nominal diameter of 200 mm, it meets PTC K 03 standards. The main body of the shut-off valve is based on the Excel soft shut-off valve that complies with JWWA B 120. 【Features】 - The polyethylene pipe and soft-seal shut-off valve are securely joined using a stainless steel sleeve. It possesses strength that can withstand a detachment force exceeding the breaking strength of the polyethylene pipe. * Performance tests, including the joint section, have been conducted and passed under the supervision of the Japan Water Works Association. - Only EF joints, which have a wealth of proven results and reliability, are used for pipe connections. - The threaded connection is firmly press-fitted into the valve body, ensuring stable opening and closing operations without putting pressure on the rubber lining of the valve body. - The rubber valve seat uses chlorine-resistant EPDM, enhancing durability against chlorine. For more details, please contact us or download the catalog.

• Drainage and ventilation equipment
• Fire extinguishing equipment

This is a soft-seal partition valve designed to accommodate shoulder joints (S type) commonly used in exposed piping such as temporary piping and plant piping. It not only significantly reduces weight compared to construction using flange short pipes but also contributes to labor-saving in piping and reduces total costs. 【Features】 - It is compatible with shoulder joint type (S type), groove joint type (G type), and crown joint type (C type), which are widely used in temporary piping and plant piping. - Since the joint is integrated with the soft-seal partition valve, it eliminates the need for flange short pipes, achieving weight reduction and reducing total costs through smaller construction space and shorter construction time. - The male thread is firmly pressed and fixed into the valve body, allowing the valve body to operate stably while preventing the male thread from putting pressure on the rubber lining of the valve body. - The rubber valve seat uses chlorine-resistant EPDM, improving durability against chlorine. For more details, please contact us or download the catalog.

• Drainage and ventilation equipment

We provide international standard valves optimal for electricity, chemicals, petroleum, gas, mining, seawater desalination, food, paper and pulp, water supply and sewage plants, ships, dams, air conditioning, agriculture, building facilities, fire protection equipment, and more. The AVK Group companies offer the most suitable valves such as butterfly valves, ball valves, dampers, knife gate valves, and discharge valves.

• pump
• Drainage and ventilation equipment
• Air conditioning equipment