水研 List of Products and Services

- It can be installed at any point on an existing pipe without interrupting the water flow. - After slightly leaving the pipe thickness, it is processed with a groove cutting, and then cut with a knife gate, ensuring that no cutting chips enter the pipe. - After installation, it can be operated repeatedly for opening and closing. - Since it is cut with a thin knife gate, the opening area is minimal, which minimizes the load on the pipe. - Because there is no drilling work involved, it can be easily installed in a short time. - Both the product and construction equipment are compact, allowing installation in tight spaces and indoor piping.

• Piping materials (copper pipes, cast iron pipes)
• Water Supply Facilities

The "EM Continuous Water Method" is a new technique that uses end mill cutting tools for continuous water construction. Conventional methods used a circular blade called a "hole saw," which could only drill pipes in a limited round shape. The "EM Continuous Water Method" allows for drilling by moving the end mill blade at a "point," enabling the cutting of pipes in free shapes and sizes. *We are currently offering a free comprehensive catalog that explains the "EM Continuous Water Valve Method"! Please download for more details. 【Features of the EM Continuous Water Valve Method "S-Gate"】 ■ Compact design! ■ Excellent water stopping performance! ■ Smooth repeated opening and closing operations! ■ Chips are forcibly discharged outside the pipe! *For more details, please contact us or download the catalog to view.

• Railway Construction
• Pipeline Construction
• Water Supply Facilities

In 1980, Suiken developed the industry's first ductile cast iron ball-shaped flexible expansion joint, aiming to improve the safety of the most important joint parts for lifelines. The "Flexibender" has a large and flexible deformation absorption capacity in all directions, and it showed no damage during the 1989 San Francisco earthquake, the 1994 Los Angeles earthquake, and the 1995 Great Hanshin-Awaji Earthquake, protecting the pipeline from disconnection and damage, and demonstrating excellent "seismic isolation quality." For more details, please contact us or download the catalog.

• Expansion joint hardware
• Vibration isolation, vibration control, and earthquake resistance construction
• Water and sewerage pipe fittings

The "All Fits Joint" is a fitting designed for connecting various types of pipes, including asbestos pipes, PVC pipes, cast iron pipes, steel pipes, polyethylene pipes, and fume pipes. It is suitable for emergency repairs and maintenance of buried pipes when the type of pipe is unknown. 【Ideal for】 ◎ Those who do not know the type of buried pipe and take time to respond to emergency repairs... ◎ Those who stock fittings for each type of pipe, incurring space and cost... 【Features】 ◆ Can connect different types of pipes with varying outer diameters thanks to a special packing! ◆ High corrosion resistance due to internal and external epoxy resin powder coating ◆ No need to stock different fittings for each type of pipe 【For more details, please download the catalog or feel free to contact us】

• others

The "S-Gate EX" is a new model of the groundbreaking EM continuous water valve method "S-Gate," which perforates existing pipes in a groove shape using an end mill and inserts a soft seal valve body. The main body and construction equipment have become even more compact, making it possible to install continuous water valves in narrow spaces where installation was previously difficult. Furthermore, a simpler structure has been achieved, streamlining the construction process. Safe and speedy installation is now possible. 【Features】 ■ Can be installed at any desired location with continuous water ■ Smooth repeated opening and closing operations due to the soft seal valve body ■ Low torque operation possible with the soft seal valve body ■ All chips from the perforation are forcibly discharged outside the pipe ■ Valve body removal is possible *For more details, please refer to the catalog or feel free to contact us.

• Railway Construction
• Pipeline Construction

A simple and smart design that consolidates the experience and know-how gained from the EM continuous water valve method "S-Gate." By drilling the existing pipe in a groove shape and inserting a soft seal valve body, water can be stopped with a torque similar to hand-tightening, allowing for smooth repeated opening and closing operations. The compact main body, which emphasizes functionality, and the small drilling machine designed for 100V power supply minimize the load on the pipe, enabling safe and speedy construction.

• Railway Construction
• Pipeline Construction

The "Insulated Flexible Bender" is a flexible expansion pipe made of a stainless steel short pipe integrated type (insulated type). The stainless steel short pipe assembly has electrical insulation resistance, eliminating the need for corrosion prevention due to dissimilar metal contact. Furthermore, it meets the detachment prevention resistance of 3DkN, making it ideal for seismic piping systems. Flexible expansion pipes can be integrated by welding at the bridge pier sections of water pipe bridges and around water distribution tanks using stainless steel pipes. 【Features】 - No need for corrosion prevention due to dissimilar metal contact - Clears detachment prevention resistance of 3DkN - The stainless steel short pipe assembly has a simple structure without bolts - Can be combined with various connection shapes of ductile iron pipes, including GX type - Can be integrated with polyethylene pipes through EF joining *For more details, please refer to the catalog or feel free to contact us.

• Fittings
• Piping and insulation
• Water supply facilities

This is a recoil-free seismic isolation joint that adapts to composite displacements with a rational design of ball joints and expansion pipes. 【Features】 ○ Diameter: 25 to 600 mm ○ High flexibility ○ Minimal thrust generated by internal pressure ○ Excellent strength and durability ○ Easy piping layout ○ No volume change inside the joint during operation. ● For other functions and details, please download the catalog.

• Vibration isolation, vibration control, and earthquake resistance construction

The "PE Bender" is a ball-shaped flexible joint made of ductile cast iron that incorporates polyethylene pipes through a unique assembly technique, combining toughness and flexibility. Its simple integrated structure without bolts, which consolidates the achievements and know-how of the ball-shaped flexible expansion pipe "Flex Bender," excels in water tightness and durability, making it ideal for seismic piping systems. The ball section adopts the know-how of the "Flex Bender," which has a disengagement resistance of 3DkN, and the polyethylene pipe integrated into the ball section demonstrates outstanding strength without any disconnection or leakage, even under severe testing conditions. For more details, please contact us or refer to the catalog.

• Vibration isolation, vibration control, and earthquake resistance construction
• Tile work

EF Bunkisoft integrates EF saddles and Hypolysoft (manufactured by Maezawa Kogyo Co., Ltd.) with existing polyethylene pipes using EF joint (electrofusion) to create a branch without stopping the water flow. The branching section becomes a unified structure with the pipeline, contributing to the seismic resistance of the pipeline. For more details, please download the catalog.

• others

The Esclamp is a ductile iron leak repair fitting for pipes with a nominal diameter of 75 to 300 millimeters (for straight pipe sections). It is compatible with cast iron pipes, steel pipes, and PVC pipes, making it economical as there is no need to stock repair joints for each type of pipe. The body is split into two parts, allowing for installation without cutting the pipe. With a generous effective length, it can reliably cover damaged areas. Its easy installation enables quick response even in emergencies. It features a reliable full-circle gasket that provides excellent water tightness. For more details, please contact us or refer to the catalog.

• Water and sewerage pipe fittings
• Tile work