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.

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.

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.

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】

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.

Integrate the EF saddle and ball valve with the existing pipe using EF joint (electrofusion) and perforate while maintaining a continuous water supply. Since the branching section becomes a unified structure of the pipeline, it contributes to the seismic resistance of the pipeline. *For more details, please refer to the catalog or feel free to contact us.

It is a flangeless type that incorporates a unit with a PE insertion port into the "S-Bunki Valve." The unit connection part ensures a detachment prevention resistance of 3DkN, making it ideal for seismic piping. Additionally, like the "S-Bunki Valve," it guarantees reliable water tightness with a full circumference packing and corrosion resistance with internal and external epoxy powder coating. *For more details, please refer to the catalog or feel free to contact us.

By incorporating a ball-shaped flexible section (seismic isolation unit), we can relieve the stress on the branching section in shallow buried installations where ground displacement is likely to occur, thus safely protecting the pipeline. Additionally, similar to the "S-Bunki Valve," we ensure reliable water tightness with a full circumference packing and corrosion resistance with internal and external epoxy powder coating. *For more details, please refer to the catalog or feel free to contact us.

The "super branching pipe" is a special pipe that incorporates a ball valve at the branching section. It allows for simultaneous installation of distribution pipes and branching of water supply pipes. Additionally, since perforation work is not required, it contributes to overall cost reduction of the construction. *For more details, please refer to the catalog or feel free to contact us.