ベン List of Products and Services

The "Fuku Taro Series" is a pump-specific pressure relief valve designed to minimize the occurrence of hunting and water hammer even when releasing continuously. The adjustment of operating pressure can be easily done through handle operation. The adjusting spring is made of stainless steel, which excels in corrosion resistance and durability, ensuring long-term functionality. Additionally, the valve body features a dashpot structure that suppresses the rapid movement of the valve body caused by pulsating pressure and fluctuating pressure, maintaining a constant discharge pressure from the pump. 【Features】 ■ Dashpot type ■ High durability and high reliability ■ Pump relief valve with handle *For more details, please download the PDF or feel free to contact us.

• Piping materials (copper pipes, cast iron pipes)

The "RD-54CN type" is a water pressure reducing valve that can be used for pressure control in water supply and hot water systems in building facilities, factory equipment, and plant equipment. It is capable of reducing high pressure to the desired pressure and maintaining it. It ensures a consistently stable pressure. 【Features】 ■ Applicable pressure on the primary side: up to 2.0 MPa ■ Nylon coating specification for red water countermeasures ■ Lower noise compared to conventional high-pressure products *For more details, please download the PDF or feel free to contact us.

• Piping materials (copper pipes, cast iron pipes)

The "Shockless WHA-6 Type/WHA-6F Type" is a water hammer arrestor that absorbs water hammer generated at the top of pipe shafts, water storage tanks, and main supply and hot water lines in apartment buildings and office buildings, preventing noise and vibration. By adjusting the enclosed air pressure, it can efficiently absorb water hammer. It effectively absorbs not only loud water hammer noise but also the pulsation in the piping. 【Features】 ■ Provides a comfortable water supply environment ■ Made of stainless steel ■ Improved durability due to new structure ■ Replaceable water hammer absorption component (bladder) *For more details, please download the PDF or feel free to contact us.

• Water supply facilities

The "LP-10/10H type" is a constant water level valve that uses corrosion-resistant stainless steel for both the main body and key components, making it compatible with a fully stainless steel line. It comes with a stainless steel pilot ball tap (with a shut-off level adjustment mechanism). The structure is designed to counter water hammer and vibration when the valve is closed. Additionally, models with an adjustment mechanism (for flow rate and valve closing time) are also available in the lineup. 【Specifications】 ■ Nominal diameter: 20–50 ■ Applicable fluids: Tap water, industrial water ■ Fluid temperature: 5–60℃ ■ Applicable pressure: 0.03–0.75MPa ■ Minimum differential pressure before and after the valve: 0.03MPa ■ End connection: JIS Rc thread ■ Material: Body (SCS), key components (SUS), diaphragm (NBR) *For more details, please download the PDF or feel free to contact us.

• Piping and insulation

The "Benkei Series RD-44SN Type" is a pressure reducing valve with a shut-off valve for individual water supply, installed within the pipe shafts of hotels and apartment buildings. It is designed to stabilize fluctuations in water supply pressure caused by differences in elevation in mid- to high-rise buildings. Thanks to the test gag method, water pressure testing can be conducted even after installation of the pressure reducing valve. Additionally, the shut-off valve is separable, which enhances workability and makes it easy to replace the pressure reducing valve or maintain water supply equipment after piping. 【Specifications】 ■ Nominal diameter: 20 ■ Applicable fluid: Tap water, hot water ■ Fluid temperature: 5–90℃ (when using pipe end core: 5–40℃) ■ Applicable pressure on the primary side: 1.0MPa or less ■ Set pressure (adjustable pressure range) ・ RD-44SN Type L: 0.08MPa (0.05–0.12MPa) ・ RD-44SN Type M: 0.2MPa (0.11–0.23MPa) ・ RD-44SN Type H: 0.25MPa (0.2–0.3MPa) *For more details, please download the PDF or feel free to contact us.

• Piping and insulation

The "JRG6320N model" is a temperature control valve designed for installation in a natural refrigerant CO2 heat pump hot water supply system with instant hot water circulation. It stabilizes the hot water temperature by constantly sensing the circulating water with a built-in thermostat. Temperature adjustment is easily possible with the scale ring. Additionally, it comes with an insulation case, making it suitable for energy-saving measures. 【Specifications】 ■ Nominal diameter: 20 ■ Applicable fluid: Hot water ■ Standard setting temperature: 57°C (at shipment) ■ Setting temperature range: 36 to 63°C ■ Fluid temperature (MAX): 70°C ■ Applicable pressure: 1.0 MPa or less ■ Applicable maximum differential pressure: 0.2 MPa *For more details, please download the PDF or feel free to contact us.

• Piping and insulation

The "VD-7N type" is a vacuum breaker designed to automatically introduce air into the negative pressure section to prevent the reverse siphon effect in the water supply system. It is used in piping sections where water pressure is always present but reverse pressure does not occur. It incorporates a check valve and ensures reliable prevention of backflow by introducing air through the intake valve. Additionally, it comes standard with a test cock, allowing for functionality checks of the check valve and intake valve while connected to the piping. 【Features】 ■ Intake structure utilizing a float design ■ Check mechanism employing a spring system that closes the valve before backflow occurs ■ Usable indoors ■ Functionality checks can be performed *For more details, please download the PDF or feel free to contact us.

• Piping Equipment

The "ADB-20 type/ADB-20F type" is a bypass steam trap that compactly integrates three functions: a thermodynamic trap function, a bypass circuit, and a stop valve. The integrated functions of "trap + stop + bypass" can be easily switched with just one tool. Additionally, a test valve can be directly attached to the drain plug section (Rc1/2), allowing for operational checks and use as a drain. 【Features】 ■ A single unit with three functions: bypass steam trap ■ Easy switching between the three functions of trap, stop, and bypass ■ Strong structure resistant to steam hammer ■ Reliable operation unaffected by drain temperature *For more details, please download the PDF or feel free to contact us.

• Piping materials (copper pipes, cast iron pipes)

The ADB-21 type/ADB-21F type is a bypass steam trap that has been compacted by approximately 38% in terms of spacing and reduced in weight by about 40% compared to conventional models, making it suitable for assembly in equipment with limited space. The main body and key components (disk, valve seat), as well as other parts (excluding bimetal and sealing components), are made of stainless steel, providing excellent durability and corrosion resistance. Additionally, the trap, bypass, and stop functions are integrated and can be easily switched with just one tool. An optional model with a switching lever is also available. 【Features】 ■ Three functions in one unit ■ Prevention of air blockage ■ Made of stainless steel for extended lifespan ■ Effective use of space and reduction of equipment costs ■ Flexible installation for vertical and horizontal piping *For more details, please download the PDF or feel free to contact us.

• Piping materials (copper pipes, cast iron pipes)

The "AD-19 type/AD-19F type" is a steam trap that can be easily disassembled due to its bolt fastening, allowing for the replacement of essential components without removing it from the piping. During the initial phase, the bimetal contracts and is positioned upward, which forces the disk to lift and prevents valve closure issues (air lock). This allows for the rapid discharge of air and low-temperature condensate, preventing air-related problems. 【Features】 ■ Bolt-type design allows for essential component replacement while still installed in the piping ■ Applicable pressure MAX. 1.6MPa ■ Built-in strainer (80 mesh) ■ Essential components made of stainless steel ■ Freeze-proof valve can be incorporated (optional) *For more details, please download the PDF or feel free to contact us.

• Piping materials (copper pipes, cast iron pipes)

The "Emergency Shut-off Valve EIM Type Series" is an earthquake countermeasure emergency shut-off valve that can mechanically perform sensing and output, as well as closure by the valve. It does not require external power sources such as electrical signals, and can shut off fluid solely using the power generated by seismic motion, making it energy-efficient and cost-effective, while also ensuring reliable operation during power outages. Depending on the application, there are two types of valve designs: butterfly valves and ball valves, with a wide range of outer diameters available. They can be used in various scales of equipment. 【Features】 - No external power required, ensuring energy efficiency and cost savings, with reliable operation during power outages. - Can be installed in locations with explosion risks as there are no heat or ignition sources. - Manual reset operation for the shut-off valve ensures safety and security. - Easy daily inspections can be conducted simply by operating the seismic sensor knob to confirm operation. *For more details, please refer to the catalog or feel free to contact us.

• others

This is an introduction to the "Comprehensive Catalog" from Ben, which offers excellent fluid control valves. ■□■ Contents ■□■ ■ Pressure reducing valves, meter unit constant flow valves, water hammer arresters ■ Safety valves, relief valves ■ Circuit valves, primary pressure regulating valves ■ Adjustment valves for district heating and cooling ■ Constant water level valves (FV valves), vacuum breaker check valves, backflow prevention devices ■ Temperature control valves, mixing valve check valves ■ Silencer vacuum control valves ■ Steam trap drain separator silencers ■ For additional content, please view the catalog download. If you would like a catalog, please contact us through the document request.

• Unit and other construction