Hydac
HYDAC Check & Load Control Valves
Womack Machine Supply Company proudly partners with Hydac to deliver the finest Load Holding Valves available. Our collaboration ensures that customers in multiple locations across the United States have access to these exceptional products, click here to see available locations. Our commitment to excellence, combined with the reliability and performance of Hydac, guarantees that you receive top-quality Load Holding Valves components for your specific needs.
- Position load locking.
- As an alternative to counterbalance valves where neither the overrunning loads or release speed are factors in the application.
- Hardened closing element in a check valve to ensure extended service life and 2 drops/min maximum internal leakage
- Multiple bias spring options for back pressure application flexibility
- Optional sealed pilot piston
- Check section serviceable as a cartridge
- All zinc-plated external cartridge surfaces
- Aluminum or steel inline housings
- Precise control of overrunning loads
- Positive load holding in any position
- Protection from pump cavitation
- Thermal expansion relief protection
- Preventing actuators from running ahead of the pump supply
- A built in check valve feature allowing free flow in one direction
- A relief feature controlling flow in the other direction
- A pilot signal that overrides the relief setting providing the counterbalance function
RP08A-01
Check Valve, Pilot-to-Open, Poppet Type
Up to 10 gpm (38 l/min) • 6000 psi (420 bar)
Description
A screw-in cartridge, poppet type pilot operated check valve for use as a blocking or load holding device.
Operation
The RP08A allows flow from port 2 to port 1, while normally blocking flow from port 1 to port 2. The valve remains closed by bias spring until sufficient pressure is applied at pilot port 3. The cartridge has 3:1 and 4:1 optional pilot ratios, meaning that at least one-third or one-fourth (respectively) of the load pressure held at port 1 is required at port 3 to open the valve. A sealed pilot piston option is available.
Features
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RP10A-01
Check Valve, Pilot-to-Open, Poppet Type
Up to 16 gpm (60 l/min) • 6000 psi (420 bar)
Description
A screw-in cartridge, poppet type pilot operated check valve for use as a blocking or load holding device.
Operation
The RP10A allows flow from port 2 to port 1, while normally blocking flow from port 1 to port 2. The valve remains closed by bias spring until sufficient pressure is applied at pilot port 3. The cartridge has 3:1 and 4:1 optional pilot ratios, meaning that at least one-third or one-fourth (respectively) of the load pressure held at port 1 is required at port 3 to open the valve. A sealed pilot piston option is available.
Features
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RP16A-01
Check Valve, Pilot-to-Open, Poppet Type
Up to 40 gpm (150 l/min) • 6000 psi (420 bar)
Description
A screw-in cartridge, poppet type pilot operated check valve for use as a blocking or load holding device.
Operation
The RP16A allows flow from port 2 to port 1, while normally blocking flow from port 1 to port 2. The valve remains closed by bias spring until sufficient pressure is applied at pilot port 3. The cartridge has 3:1 and 4:1 optional pilot ratios, meaning that at least one-third or one-fourth (respectively) of the load pressure held at port 1 is required at port 3 to open the valve. A sealed pilot piston option is available.
Features
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RV06A-01
Check Valve, Ball Type
Up to 5 gpm (19 l/min) • 5000 psi (350 bar)
Description
A screw-in cartridge, ball type check valve for use as a blocking or load holding device.
Operation
The RV06A allows flow from port 1 to port 2, while normally blocking flow in the opposite direction. The valve remains closed by bias spring until sufficient pressure is applied at port 1 at which time the ball lifts off the seat and allows flow from port 1 to port 2.
Features
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RV08A-01
Check Valve, Ball Type
Up to 10 gpm (38 l/min) • 6000 psi (420 bar)
Description
A screw-in cartridge, ball type check valve for use as a blocking or load holding device.
Operation
The RV08A allows flow from port 1 to port 2, while normally blocking flow in the opposite direction. The valve remains closed by bias spring until sufficient pressure is applied at port 1 at which time the ball lifts off the seat and allows flow from port 1 to port 2.
Features
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RV10A-01
Check Valve, Ball Type
Up to 21 gpm (80 l/min) • 6000 psi (420 bar)
Description
A screw-in cartridge, ball type check valve for use as a blocking or load holding device.
Operation
The RV10A allows flow from port 1 to port 2, while normally blocking flow in the opposite direction. The valve remains closed by bias spring until sufficient pressure is applied at port 1 at which time the ball lifts off the seat and allows flow from port 1 to port 2.
Features
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RV12A-01
Check Valve, Poppet Type
Up to 31 gpm (120 l/min) • 6000 psi (420 bar)
Description
A screw-in cartridge, poppet type check valve for use as a blocking or load holding device.
Operation
The RV12A allows flow from port 1 to port 2, while normally blocking flow in the opposite direction. The valve remains closed by bias spring until sufficient pressure is applied at port 1 at which time the poppet lifts off the seat and allows flow from port 1 to port 2.
Features
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RV16A-01
Check Valve, Poppet Type
Up to 44 gpm (165 l/min) • 6000 psi (420 bar)
Description
A screw-in cartridge, poppet type check valve for use as a blocking or load holding device.
Operation
The RV16A allows flow from port 1 to port 2, while normally blocking flow in the opposite direction. The valve remains closed by bias spring until sufficient pressure is applied at port 1 at which time the poppet lifts off the seat and allows flow from port 1 to port 2.
Features
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RV06B-01
Check Valve, Integral Relief, Ball Type
Up to 4 gpm (15 l/min) • 5000 psi (350 bar)
Description
A screw-in cartridge, ball type check valve and direct acting, ball type relief valve combined in a single cartridge intended for use as load holding and pressure limiting device in hydraulic circuits to reduce manifold size.
Operation
The RV06B allows flow from port 2 to port 1 once the sufficient pressure is applied at port 2 to overcome the bias spring pressure of 5 psi (0.34 bar). It normally blocks flow in the opposite direction. The relief portion of the valve would remain closed until the predetermined pressure setting is reached at port 2 to lift the spring opposed ball from its seat, allowing flow from port 2 to port 3. Pressure at port 3 is directly additive to relief pressure setting.
Features
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RV06C-01
Check Valve, Integral Relief, Poppet Type
Up to 5 gpm (19 l/min) • 5000 psi (350 bar)
Description
A screw-in cartridge, ball type check valve and direct acting, poppet type relief valve combined in a single cartridge intended for use as load holding and pressure limiting device in hydraulic circuits to reduce manifold size.
Operation
The RV06C allows flow from port 2 to port 1 once the sufficient pressure is applied at port 2 to overcome the bias spring pressure of 5 psi (0.34 bar). It normally blocks flow in the opposite direction. The relief portion of the valve would remain closed until the predetermined pressure setting is reached at port 2 to lift the spring opposed poppet from its seat, allowing flow from port 2 to port 3. Pressure at port 3 is directly additive to relief pressure setting.
Features
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RVD08A-01
Check Valve, Dual Pilot-to-Open, Inline Body
Up to 10 gpm (38 l/min) • 6000 psi (420 bar)
Description
An inline housed, dual pilot operated, hydraulic check valve for use as a blocking or load holding device. The valve consists of two check valves and a dual pilot piston in an inline body.
Operation
The RVD08A allows flow from V ports to C ports, while normally blocking flow in the opposite direction. Flow will be allowed from C to V when pressure is applied at the opposite V port. The check is spring biased at 30 psi to assure holding in no load conditions. A sealed pilot piston option with check spring bias of 70 psi is available.
Features
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RVD10A-01
Check Valve, Dual Pilot-to-Open, Inline Body
Up to 21 gpm (80 l/min) • 6000 psi (420 bar)
Description
An inline housed, dual pilot operated, hydraulic check valve for use as a blocking or load holding device. The valve consists of two check valves and a dual pilot piston in an inline body.
Operation
The RVD10A allows flow from V ports to C ports, while normally blocking flow in the opposite direction. Flow will be allowed from C to V when pressure is applied at the opposite V port. The check is spring biased at 30 psi to assure holding in no load conditions. A sealed pilot piston option with check spring bias of 70 psi is available.
Features
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RVS08A-01
Check Valve, Single Pilot-to-Open, Inline Body
Up to 10 gpm (38 l/min) • 6000 psi (420 bar)
Description
An inline housed, pilot operated, hydraulic check valve for use as a blocking or load holding device.
Operation
The RVS08A allows flow from port V to port C, while normally blocking flow in the opposite direction. Flow will be allowed from C to V when pressure is applied at pilot port P. The check is spring biased at 30 psi to assure holding in no load conditions. A sealed pilot piston option with check spring bias of 70 psi is available.
Features
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RVS10A-01
Check Valve, Single Pilot-to-Open, Inline Body
Up to 21 gpm (80 l/min) • 6000 psi (420 bar)
Description
An inline housed, pilot operated, hydraulic check valve for use as a blocking or load holding device.
Operation
The RVS10A allows flow from port V to port C, while normally blocking flow in the opposite direction. Flow will be allowed from C to V when pressure is applied at pilot port P. The check is spring biased at 30 psi to assure holding in no load conditions. A sealed pilot piston option with check spring bias of 70 psi is available.
Features
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AVAILABLE IN THESE LOCATIONS
- Alabama
- Arizona
- Arkansas
- Kansas
- Louisiana
- Mississippi
- Montana
- N.W. Florida
- Nevada
- New Mexico
- Oklahoma
- S. Idaho
- Texas
- Utah
- W. Missouri
- W. North Dakota
- W. South Dakota
- Wyoming
Contact Us For Pricing And Availability
If you’re interested in any of our products, or you have any questions about pricing and availability, let our team know today. We’re here to help!