Safety Valves, Control Valves（Applicable Fluid：Water）

Safety Valve, Relief Valve AL-150 Series

YOSHITAKE

[Features]
・ It is a versatile type that supports fluids such as steam, air, water, and oil
・ The pressure division was subdivided, and ultra-precise finishing by advanced technology was realized to pursue the best performance
・ Main parts (valve body, valve seat) and adjustment spring are made of stainless steel, and SCS14A (equivalent to SUS316) with excellent corrosion resistance is used for main parts
・ The sealed structure prevents fluid from leaking to the outside

Safety Relief Valve, AL-17 Series

YOSHITAKE

[Features]
・ The main part (valve body, valve seat) is made of stainless steel, so it has excellent corrosion resistance and durability
・ The down pressure can be adjusted by seat ring
・ It can support set pressures up to 1.6 MPa

Pressure Reducing Valves (Hot and Cold water), GD-41 Series

YOSHITAKE

Saves space and resources. Stainless steel is used for fluid-contacting parts, fluoropolymer for fluid-contacting surfaces, and special fluorine rubber for rubber parts to provide superior corrosion resistance and durability.

Relief Valve, AL-250 Series

YOSHITAKE

[Features]
・ Since it is entirely made of stainless steel, it has excellent corrosion resistance and durability
・ By adopting a dashpot structure, it has a great effect on lines with large pulsations and pressure fluctuations. Chattering and hunting are reduced
・ It has stable operation against back pressure changes during continuous blowing

CAD ：

2D

FD-9N, Flow-Regulating Valve (for Excess Flow Control / Water Supply)

VENN

Capable of providing suitable flow via regulation to prevent excessive flow for various types of equipment and machinery such as water supply pipes for large receiving tanks, water sprayers, and showers.
*Consider performing installation in a location as far away as possible from areas that require quiet (hotel rooms, hospital rooms, housing, etc.)

[Features]
· Rich lineup of flow rate settings.
･ An internal constant flow cartridge can be replaced and maintained.
· The elasticity of the unique rubber component used enables control of a stable and constant flow.

RD-25SN, 50SN Series Pressure-Reducing Valve for Water Service

VENN

A pressure reducing valve for supplying water to small boilers and electric water heaters. Can be freely mounted horizontally or vertically.

[Features]
- Chlorine water-resistant EPDM for improved durability (RD-50SN series).
- Low-noise type (RD-50SN series).
- Mounting position can be changed to any orientation (except with strainer cap upwards).

Safety Valve, Relief Valve AL-140 Series

YOSHITAKE

[Features]
・ It is made entirely of stainless steel, SCS14A (equivalent to SUS316) with excellent corrosion resistance is used for the main part
・ The sealed structure prevents fluid from leaking to the outside

Safety Relief Valve, AL-150T Series

YOSHITAKE

[Features]
· Soft seats are utilized in the main parts for a superior valve seat airtight performance. Optimal for applications in which valve seat leaks are unacceptable.
· The main parts: valve body, seat. and adjustment springs are made from stainless steel. Anti-corrosive SCS14A is used for the main parts.
· The sealed construction prevents liquid from leaking outside.

Air Vent Valve TA-16 Series

YOSHITAKE

Provides a stable displacement across a wide range of operating pressures (0.01–1.0 MPa). Its compact size enables mounting in a narrow space.

[Features]
• All parts are made of stainless steel, except for the valve body disk, gasket, and L-hose fitting (TA-16L), which ensures excellent corrosion resistance and durability.
• The valve body disk is made of fluororubber, which ensures excellent sealing performance.
• The TA-16 can easily be connected to an exhaust pipe by mounting the optional pipe connectors.

CAD ：

2D

Pressure Reducing Valve for Water, Liquid, Air, Gas, RD-20, 20N Series, [Heisei]

VENN

[Features]
· A stainless steel, small-size pressure reducing valve that can be used for both liquid and gas supply pipes—especially in rust-intolerant places where bronze cannot be used. In addition, it can be used for stainless steel piping in door-to-door water supply systems.
· Stainless steel and synthetic rubber are used for the liquid-contacting parts and spring casings for excellent corrosion resistance.
· The carefully designed flow channel, utilization of square spring, etc., provide a significant size and weight reduction.
· Freely adaptable installation positon.
· Easy to maintain.
· Can be used for liquid and gas, with a primary side pressure of 2.0 MPa.

AF-9 Series Air Vent Valve

VENN

Air vent valve with built-in check valve such as pump suction side or sealed circuit

[Features]
· Air vent valve made of stainless steel with built-in strainer in the main body that boasts superior corrosion resistance and durability. The AF-10 type series has air intake and exhaust functions.
· AF-9 type series is an air vent valve with a built-in check valve and is structured to not intake here even when the inlet side is exposed to negative pressure. Hence, it is used when a function is required for only emitting and not in taking the air, such as in the pump suction inlet side and degassing system of sealed circuits.
· Easy design construction possible with the built-in strainer.
· Made of stainless steel for superior corrosion resistance and durability.
· The exhaust vents can be freely rotated 360° and are easy to work with.
· Equipped with manual shut-down control.
· Does not absorb air even when the pressure is negative, and therefore can be mounted into the pump suction inlet side.

Air Vent, 11-AV Series

YOSHITAKE

Operates at a greater output across a wide range of pressures. The free-floating lever is less prone to wearing. The valve body and valve seat are made of highly durable hardened chrome steel.

CAD ：

2D

Pressure Reducing Valves for Hot and Cold Water, GD-26-NE Series

YOSHITAKE

Corrosion-resistant materials are used in the liquid-contacting parts. Superior chlorine resistance and reliability for running cold and hot water. The valve utilizes pressure-balanced structure. Therefore, secondary side pressure is maintained at a fixed level without affecting the primary side pressure.

CAD ：

2D

Lift Type Safety Valve AL-24/AL-24F Series

YOSHITAKE

[Features]
・ It uses a bronze valve box with a stainless steel valve seat so there is no risk of rust
・ Since it is a diaphragm type and has no sliding parts, it operates reliably
・ The set pressure range is as wide as 0.1 to 0.7 MPa with 1 spring, the adjusting thread is a handle type, and a butterfly nut is used for the lock nut, so the pressure can be easily changed
・ Smooth opening and closing even in continuous operation, it operates accurately with respect to the set pressure and discharges liquid
・ Stable operation can be obtained from small flow rate to large flow rate
・ According to the specifications, you can choose the material of the diaphragm and valve body from 2 types, NBR and FKM (fluoroelastomer)
・ It can be installed vertically, horizontally, top, or bottom

RD-44N Pressure-Reducing Valve for Door-to-Door Water Supply (for Cold/Hot Water), Benkei

VENN

Direct acting type general purpose product (low-noise type and pipe-end core support) suitable for housing complexes, hotels, and offices. RD-44N type valves are equipped with only the pressure reducing function, which is fundamental for the water supply pressure composite valve series, and enables increase in construction and test efficiency.

[Features]
· Water supply pressure reducing valve per room unit results in: 1) Reduces flow noise. 2) Installation of valve in each room unit eliminates water supply variation due to level differences. 3) No water splashes due to application of appropriate pressure. Reduces water hammering. 4) During maintenance, impact of water outage does not affect other areas. 5. Stable mixing temperature resulting in improved habitability.
· Uses chlorine water-resistant EPDM.
· Sanitary design avoids pooling of liquids.
· Works reliably from low differential pressures to high differential pressure.
· Safe and secure construction is made possible due to intact pressure-reducing valves.
· You can conduct a hydraulic test even after construction while the pressure reducing valve is installed.
· Easy, simple new test gag method.

RD-14 Model Series - Pressure Reducing Valve (for Cold Water/Warm Water/Air/Oil)

VENN

Direct acting pressure reducing valve for air, liquids, and water has a low pressure fluctuating range and can be used at low as well as high flow rates.

[Features]
· At the construction facilities, the product can be used to control the pressure of water supplied from elevated water tanks in mid-rise and high-rise buildings, or in water supply directly connected to pumps instead of elevated water tanks, as well as in boiler water supply. Industrial use of the product includes pressure control for fuel oil, lubricating oil, and air.
· Has a pressure balance structure, so changes to set pressures are minimal.
· Maintenance is easy as the upper side can be taken apart unidirectionally allowing for internal inspection.
· RD-14CN models come with nylon coating to protect from red water.

AF-6N Air Vent Valve

VENN

[Features]
· Small air vent valve to be used in a pipe, hot water boiler, fan coil, small or medium pressure tank, solar system, or others.
· Operations are stable due to the BBC (bubble dispersion) method, so water discharge does not occur.
· The air exhaust is tube-shaped.
· Compact and capable of up to 1.0MPa.
· Equipped with manual shut-down mechanism.

Relief Valve, AL-260 Series

YOSHITAKE

[Features]
・ Main parts are made of stainless steel, and all wetted parts are made of corrosion resistant material
・ By adopting a dashpot structure, it has a great effect on lines with large pulsations and pressure fluctuations
・ Chattering and hunting are reduced
・ It has stable operation against back pressure changes during continuous blowing

Safety Relief Valve, AL-150TML Series

YOSHITAKE

Uses a lift valve lever mechanism for manually performing blowout inspections. The valve body/valve seat and adjustment spring are made from stainless steel. Anti-corrosive SCS14A is used in the main parts.

Air Vent Valve, TA-3/TA-6 Series

YOSHITAKE

Operates at a wide range of pressures, allowing use from low to high pressures. The valve seat uses a synthetic rubber disk, preventing leakage from the valve, but as a precautionary measure a screw has been added to mount the copper tube fitting onto the top part of the valve seat.

CAD ：

2D

Pressure Reducing Valves for Hot and Cold Water / Oil/Air, GD-6 Series

YOSHITAKE

Small, and lightweight, with constant secondary pressure accuracy even at small capacities.

CAD ：

2D

Pressure Reducing Valve (For Cold and Hot Water) GD-24GS/GD-24GS-N Series

YOSHITAKE

A hanging metal type. A pressure reducing valve without sliding parts. Requires maintenance of consumable parts only.

Pressure Reducing Valves for Hot and Cold Water, GD-28-NE Series

YOSHITAKE

Corrosion-resistant materials are used in the liquid-contacting parts. Superior chlorine resistance against running cold and hot water. The top section can be disassembled unidirectionally, allowing for internal inspection.

CAD ：

2D

Pressure Reducing Valve for Water Supply, GD-55-80 Series

YOSHITAKE

Used for supplying water to a hot-water heat exchanger while maintaining a predetermined water supply pressure. Besides the pressure reducing function, the valve includes a backflow prevention function, a negative-pressure operation function, a pressure balancing function, and a strainer.

CAD ：

2D

Pressure Reducing Valve for Steam, Gas and Liquid, RD-3H Series

VENN

[Features]
· Pilot type direct-acting, pressure-reducing valve that is used in non-controllable, small flow-rate locations. It has good pressure-control with excellent wide pressure range adjustment characteristics. The main parts are made from SUS (for steam).
· Note: These valves differ for use with stream, air, vapor, and liquid.

RD-31FN, 32FN Type, Pressure-Reducing Valve HEISEI

VENN

Direct acting type general-purpose products (made of bronze, medium capacity) such as construction equipment, factory equipment, etc.

[Features]
· Calm-flow rusty water countermeasures: Bronze body + Pipe-end core, to prevent rusty water.
· Low noise design.
· Smaller and more lightweight by 50% than FC made conventional parts.
▪ Water does not leak outside when diaphragm is damaged.
▪ Built-in strainer (Equivalent to 40 mesh with nominal diameter of 50 or less).
· Heisei serves as a bronze water pressure reducing valve meeting the needs of the times [trump card to prevent rusty water].
▪Already highly winning high praise, it combines technology of pressure reducing valves for water, with controllability, reliability, and user-friendliness, eliminating rust generation from the flow path including pipe joints in particular.
· [Heisei] is receiving increased reputation in active countermeasures for rusty water and is used for building facilities, house facilities, plant facilities, boiler water supply, etc.

RD-31N, 32N Type Pressure Reducing Valve, Heisei

VENN

Direct-acting general-purpose products (made of bronze, medium capacity) for use in construction equipment, factory equipment, etc.

[Features]
- Serves as a bronze water-pressure reducing valve meeting rust-water prevention needs.
- We combine our pressure-reduction technology with high controllability, reliability and user-friendliness, eliminating rust generation from pipe joints and across the flow path.
- Heisei provides reliable countermeasures for rusty water, used in building facilities, house facilities, plant facilities, boiler water supply, etc.
- Measures to prevent rusty water in normal state: Bronze body + pipe-end core to prevent rusty water.
- Low-noise design.
- Water does not leak outside if the diaphragm is damaged.
- Built-in strainer.
- (Nominal diameter of 50 or less 40 mesh equivalent) Smaller approximately 50% later than FC-made conventional parts.

RD-47N Pressure-Reducing Valve for Door-to-Door Water Supply (for Cold/Hot Water), Benkei

VENN

Pressure reducing valve for hot and cold water supply used in apartment buildings, high-rise buildings, etc.

[Features]
· Water supply pressure reducing valve per room unit results in: 1) Reduces flow noise. 2) Eliminates water supply pressure variation difference with elevation difference. 3) No water splashes due to application of appropriate pressure. 4) During maintenance, impact of water outage does not affect wide area. 5. Stable mixing temperature resulting in improved habitability.
· Uses chlorine water-resistant EPDM.
· Sanitary design avoids pooling of liquids.
· Works reliably from low differential pressures to high differential pressure.
· Easy, simple new test gag method.
· Safe and secure construction is made possible due to intact pressure-reducing valves.
· You can conduct a hydraulic test even after construction while the pressure reducing valve is installed.
▪ Cassette type valve enables easy maintenance.
· With a structure without caulking or welding, all components are recyclable and can be segregated and disposed.

Safety Relief Valve, AL-140T Series

YOSHITAKE

[Features]
・ Since it is entirely made of stainless steel, it has excellent corrosion resistance and durability
・ A soft seat is used for the main part, and it has excellent airtightness in the valve seat
・ It is ideal for applications where valve seat leakage cannot be tolerated
・ The sealed structure prevents fluid from leaking to the outside

CAD ：

2D

Safety Relief Valve, AL-150TR Series

YOSHITAKE

A handle-operated valve for changing the pressure easily. Usable as a relief valve.

[Features]
· The AL-150 is a handle-operated valve for changing the pressure easily. Therefore, this valve can be used as a relief valve.
· Soft seats are utilized in the main parts for a superior valve seat airtight performance.
· Optimal for applications in which valve seat leaks are unacceptable.
· The main parts (valve body and seat) and adjustment springs are manufactured from SCS14 stainless steel (SUS316 EQUIV) with excellent anti-corrosive properties.
· The sealed construction prevents fluid from leaking outside.

Safety Relief Valve AL-300T/AL-301 T Series

YOSHITAKE

[Features]
・ Fluoropolymer disc is used for the valve, so it has excellent seat airtightness
・ The main part (valve body / valve seat) of AL-301T is stainless steel, which has excellent corrosion resistance and durability

CAD ：

2D

Relief Valve AL-52F-95 Series for Hot water Equipment

YOSHITAKE

Attached to the piping system of a hot water heat exchanger, when there is a rise in pressure in the system due to the expansion of the water or pressure rise due to the abnormality, it will be used for the purpose of ensuring the safety of the equipment.

[Features]
▪ A diaphragm with a large effective pressure area is used in the pressure receiver, so the spouting amount during initial operations is considerable, and spouting at start and end pressure is stable.
· The water contact part and mechanical part are separated by a diaphragm and are therefore hygienic.
· A manual lever is attached, so actuation, level check and drainage from the whole system are easily performed.
· The diaphragm has superior durability as it is made from heat resistant and water resistant synthetic rubber.
▪ The AL-72F relief valve uses parallel screws in the exit connection that makes piping easy with the cap nut.
▪ The AL-52S relief valve has superior corrosion resistance properties because its valve seat is made from stainless steel. This makes it suitable for use in electric water heaters.

Intake Valve - Automatic Intake Valve - VB-10 Series

YOSHITAKE

[Features]
• This valve increases atmospheric pressure by applying air to the pipe from which it is difficult to drain the water. Consequently, water is easily drained during water drainage operations.
• As a 60-mesh strainer is built into the valve, there are no blockages due to scale.
• In addition, even if water leaks due to blockage, water can be stopped by tightening the cap.
• As the highest temperature is 95°C, warm water is also supported.
• Can be mounted in both vertical and horizontal directions (Downward facing not possible).

Intake and Exhaust Valves, TAV-2 Series

YOSHITAKE

Quickly prevents air from being sucked back when negative pressure occurs. Automatically works in response to air intake and exhaust requirements.

CAD ：

2D

Air Vent Valve TA-16CVA, Series

YOSHITAKE

Provides a stable displacement across a wide range of operating pressures (0.01–1.0 MPa). Compact design permits installation in small space. Included check valve prevents air being sucked in on inlet side, even at negative pressure.

CAD ：

2D

Air Vent Valve, TA-16 CVS Series

YOSHITAKE

[Features]
・ All materials other than valve discs, gaskets, check valves, check valve fitting are made of stainless steel
・ Wide operating pressure (0.01 to 1.0 MPa) gives stable displacement
・ Compact size allows installation in a small space
・ Excellent sealing performance because synthetic rubber is used for the valve disc
・ TA-16CVS makes it easy to connect any exhaust pipe by installing optional pipe connection parts
・ Since it has a check valve, it does not suck air even when the inlet side is under negative pressure
[Applications]
・ building equipment, factory equipment, housing complex

CAD ：

2D

Air Vent Valve TA-16L Series

YOSHITAKE

[Features]
・ All materials other than valve discs, gaskets and L-shaped hose fittings (TA-16L) are made of stainless steel
・ Wide operating pressure (0.01 to 1.0 MPa) gives stable displacement
・ Compact size allows installation in a small space
・ Excellent sealing performance because synthetic rubber is used for the valve disc
[Applications]
・ building equipment, factory equipment, housing complex

CAD ：

2D

Pressure Reducing Valves (Hot and Cold Water, Oil, Air), GD-200/GD-200H Series

YOSHITAKE

A high-capacity type that can also handle high pressures. Optimal for use as industrial equipment.

CAD ：

2D

Door-to-Door Water Supply Pressure Reducing Valve and Directional Control Valve, CV-36UL/CV-36UK Series

YOSHITAKE

Fitting with a built-in check valve for the GD-46 / 38 series of pressure reducing valves with bypass for door-to-door water supply in housing complexes.

Door-to-Door Water Supply Pressure Reducing Valve and Check Valve, JO-36UL/JO-36UK Series

YOSHITAKE

Standard fitting for the GD-46 / 38 series of pressure reducing valves with bypass for door-to-door water supply in housing complexes.

Door-to-Door Water Supply Pressure Reducing Valve Fitting, JO-36UP/JO-36UV Series

YOSHITAKE

Standard fitting for the GD-46 / 38 series of pressure reducing valves with bypass for door-to-door water supply in housing complexes.

Pressure Reducing Valve for Door-to-Door Water Supply for Condominiums, for Use in Residential Complexes, GD-15 / GD-15C Series

YOSHITAKE

This product enables a quiet water supply, so it can be used as a pressure reducing valve for individual water supply in apartment buildings, etc. Can hold a very stable secondary side pressure on the water supply side pressure fluctuation. Small and light with a built in strainer.

[Features]
• Because the noise of the pressure reduction valve itself has been eliminated, water can be supplied even late at night without issue.
• Because the supplied water pressure has already been adjusted to a standard set pressure, there is no need for on-site pressure adjustment.
• The pressure-balancing valve structure ensures that the pressure on the secondary side is kept constant without being affected by the pressure on primary side.
• Thanks to a built-in strainer, any intermixed trash, sand, etc. is removed, preventing it from getting stuck in the valve area or flowing out to the secondary side.
• The strainer cap can be removed without using tools. Also, because the strainer and the strainer cap are combined into a single unit, it is easy to perform maintenance inspections inside the valve box without leaving the strainer in.
• Thanks to its tightly closed structure, no fluids will escape to the exterior even if the diaphragm is damaged.
• Piping can be mounted in whatever direction you like (horizontally or vertically).

Pressure Reducing Valve for Water Supply, GD-56-80 Series

YOSHITAKE

It's used for the purpose of water supply of hot water for the heat exchanger, and then used maintaining a predetermined water supply pressure. In addition to the pressure reducing function, a backflow prevention function, a negative-pressure operation function, a pressure balancing function, and a strainer are built in.

CAD ：

2D

Pressure Reducing Valve for Water Supply, GD-56R-80 Series

YOSHITAKE

Built-in backflow prevention function, negative pressure operation function, pressure balance function, automatic return water drain stopper and strainer; used mainly in hot water heat exchangers.

[Features]
· The pressure-balancing valve mechanism ensures that the pressure on the secondary side is kept constant without being affected by pressure on primary side.
· Maintenance and inspection are easy as the strainer, check valve, and strainer cap can be removed without using tools.
· The piping installation direction (vertical horizontal) is unrestricted.
· Since the drainage plug is a push operated type, it automatically returns to its original position without having to be returned manually.
· The GD-91R type pressure reduction valve uses parallel threads for connection, and thus piping can be performed easily using cap nuts.
· Valve body and the diaphragm have excellent resistance to chlorinated water.

CAD ：

2D

Pressure Reducing Valve for Water, Hot Water, Air, RD-35F/36F Type, [Heisei]

VENN

· The [Heisei] series are pressure reducing valves for water made from bronze with stainless main parts. These valves combine corrosion resistance with controllability and reliability for compatibility in production plants, etc.

[Features]
· The SCS main body eliminates red water and it can also be used with stainless steel piping.
· A low-noise design.
· Smaller and lighter in weight by approx. 50% compared to conventional FC made parts.
· Water does not leak outside if the diaphragm is damaged.
· A pressure gauge can be installed directly onto the main body (secondary side only).