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Pilot Piston Style Dual Pilot Operated Check Valves
*PRODUCT IMAGE IS REPRESENTATIVE PROVIDED BY THE MANUFACTURER. DO NOT MAKE BUYING DECISIONS SOLEY BASED ON THE IMAGE. PLEASE VERIFY SPECIFICATIONS MEET YOUR REQUIREMENTS.
Parker’s family of dual pilot operated check valves feature a space and cost saving design that fits in a common industry cavity and can operate with hydraulic system flows as high as 226 lpm and pressures up to 350 bar. The internal pilot piston of Parker’s selection make these valves suitable for load and position holding applications within a broad range of markets, such as the aerial, construction, material handling, industrial markets, and many more. These reliable valves have pilot ratios of 3:1 and 4:1 as available options depending on application needs.
Markets:
• Aerial
• Construction Equipment
• Forestry Equipment
• Material Handling Equipment
• Miscellaneous Industrial
• Miscellaneous Manufacturing
• Miscellaneous Mobile
Features/Benefits:
• Cost effective – replaces two cartridges
• Hardened, precision ground parts for durability
• Internal pilot piston
• Common cavity
• All external parts zinc plated
Applications:
• Load holding
• Position holding
Additional Technical Insight:
These valves use a standard pilot piston and two standard Parker check valves in an assembled body. At rest the check valves remain seated, blocking flow from entering and exiting the cylinder and locking the cylinder in place. When system pressure is applied to either valve port, the check valve will open allowing free flow from the inlet to the actuator port across the check valve. As pressure builds to shift the cylinder, the internal pilot piston, utilizing a 3:1 or 4:1 ratio, will respond quickly to the system pressure and will shift against the return check. This action mechanically pilots the valve open to allow return flow to pass through the valve from the actuator back to tank. With both ports now open, the valve is unlocked and the hydraulically powered cylinder is free to move. When system pressure is shut off to the valve, the valve will return to the holding condition restricting actuator movement and locking the system in place. These valves are ideal for load holding applications, where metering conditions are not required.
Read More...Markets:
• Aerial
• Construction Equipment
• Forestry Equipment
• Material Handling Equipment
• Miscellaneous Industrial
• Miscellaneous Manufacturing
• Miscellaneous Mobile
Features/Benefits:
• Cost effective – replaces two cartridges
• Hardened, precision ground parts for durability
• Internal pilot piston
• Common cavity
• All external parts zinc plated
Applications:
• Load holding
• Position holding
Additional Technical Insight:
These valves use a standard pilot piston and two standard Parker check valves in an assembled body. At rest the check valves remain seated, blocking flow from entering and exiting the cylinder and locking the cylinder in place. When system pressure is applied to either valve port, the check valve will open allowing free flow from the inlet to the actuator port across the check valve. As pressure builds to shift the cylinder, the internal pilot piston, utilizing a 3:1 or 4:1 ratio, will respond quickly to the system pressure and will shift against the return check. This action mechanically pilots the valve open to allow return flow to pass through the valve from the actuator back to tank. With both ports now open, the valve is unlocked and the hydraulically powered cylinder is free to move. When system pressure is shut off to the valve, the valve will return to the holding condition restricting actuator movement and locking the system in place. These valves are ideal for load holding applications, where metering conditions are not required.
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| Action | SKU | Availability | Price | Maximum Operating Pressure | Weight | Connection Type | Division | For Fluid Type | Division | Minimum Operating Temperature | Valve Material | Filter Efficiency Rating | Maximum Kinematic Viscosity | Maximum Operating Temperature | Body Material | Connection Size | Cavity Size | Flow Rate | Actuation Type | Operation Type | Maximum Inlet Pressure Rating | Operating Temperature | Seal Material | Sealed Pilot Included | Maximum Flow Rate | Function | Leak Rate | Configuration | Mounting Type | Flow Direction | Cracking Pressure | Pilot Pressure Ratio | Seal Material | Sealed Pilot Included | Flow Rate | Cracking Pressure | Maximum Inlet Pressure Rating |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CDP081A100-A6T | Backordered | POR | 210 bar | 0.6 kg | SAE | Hydraulic Systems Division | Mineral-based Hydraulic Fluids | Hydraulic Cartridge Systems Division | -35 °F | Steel | ISO 4406 18/16/13 | 45-2000 SSU (6 to 420 cSt) | 93 °C | Aluminum | -6 | C08 | 38 L/min | Pressure Sensing | Automatic | 3000 psi | -35 to 200 °F | D-Ring (Standard) | Yes | 10 Gal/min | Dual Pilot Operated | 312 Cc/min across Pilot Piston (no seals) | Pilot Piston Style | Line Mounted | Free Flow Valve to Cylinder | 100 psi | 4:1 | D-Ring (Standard) | Yes | 10 GAL/MIN, 38 L/MIN | 100 PSI, 6.9 BAR | 3000 PSI, 210 BAR | |
| CDP081P65N-A6T | Backordered | POR | 210 bar | 0.6 kg | SAE | Hydraulic Systems Division | Synthetic Hydraulic Fluids | Hydraulic Cartridge Systems Division | -30 °F | Hardened Steel | ISO 4406 18/16/13 | 45-2000 SSU (6 to 420 cSt) | 250 °F | Aluminum | -6 | C08 | 38 L/min | Pressure Sensing | Automatic | 3000 psi | -30 to 250 °F | Nitrile | No | 10 Gal/min | Dual Pilot Operated | Internal (max): 2 Dpm (0.13 cc/min) across Check Valves | Pilot Piston Style | Line Mounted | Check Flow Cylinder to Valve | 4.5 bar | 4:1 | Nitrile | No | 10 GAL/MIN, 38 L/MIN | 65 PSI, 4.5 BAR | 3000 PSI, 210 BAR | |
| CDPH081A100N-6T | Backordered | POR | 5000 psi | 1.37 kg | SAE | Hydraulic Systems Division | Mineral-based Hydraulic Fluids | Hydraulic Cartridge Systems Division | -34 °C | Hardened Steel | ISO 4406 18/16/13 | 45-2000 SSU (6 to 420 cSt) | 121 °C | Steel | -6 | C08 | 10 Gal/min | Pressure Sensing | Automatic | 350 bar | -30 to 250 °F | Nitrile | Yes | 10 Gal/min | Dual Pilot Operated | 312 Cc/min across Pilot Piston (no seals) | Pilot Piston Style | Line Mounted | Check Flow Cylinder to Valve | 6.9 bar | 4:1 | Nitrile | Yes | 10 GAL/MIN, 38 L/MIN | 100 PSI, 6.9 BAR | 5000 PSI, 350 BAR | |
| CDPH081A30-6T | Backordered | POR | 5000 psi | 1.37 kg | SAE | Hydraulic Systems Division | Synthetic Hydraulic Fluids | Hydraulic Cartridge Systems Division | -35 °F | Hardened Steel | SAE Class 4 | 45-2000 SSU (6 to 420 cSt) | 93 °C | Steel | -6 | C08 | 38 L/min | Pressure Sensing | Automatic | 5000 psi | -35 to 200 °F | D-Ring (Standard) | Yes | 10 Gal/min | Dual Pilot Operated | 312 Cc/min across Pilot Piston (no seals) | Pilot Piston Style | Line Mounted | Free Flow Valve to Cylinder | 30 psi | 4:1 | D-Ring (Standard) | Yes | 10 GAL/MIN, 38 L/MIN | 30 PSI, 2.1 BAR | 5000 PSI, 350 BAR | |
| CDPH081P30N-6T | Backordered | POR | 5000 psi | 3.03 lb | SAE | Hydraulic Systems Division | Synthetic Hydraulic Fluids | Hydraulic Cartridge Systems Division | -34 °C | Hardened Steel | ISO 4406 18/16/13 | 45-2000 SSU (6 to 420 cSt) | 250 °F | Steel | -6 | C08 | 10 Gal/min | Pressure Sensing | Automatic | 5000 psi | -34 to 121 °C | Nitrile | No | 38 L/min | Dual Pilot Operated | 312 Cc/min across Pilot Piston (no seals) | Pilot Piston Style | Line Mounted | Free Flow Valve to Cylinder | 2.1 bar | 4:1 | Nitrile | No | 10 GAL/MIN, 38 L/MIN | 30 PSI, 2.1 BAR | 5000 PSI, 350 BAR | |
| CDPH081P-6T | 53 in stock | POR | 350 bar | 1.37 kg | SAE | Hydraulic Systems Division | Mineral-based Hydraulic Fluids | Hydraulic Cartridge Systems Division | -35 °F | Steel | ISO 4406 18/16/13 | 45-2000 SSU (6 to 420 cSt) | 93 °C | Steel | -6 | C08 | 38 L/min | Pressure Sensing | Automatic | 5000 psi | -35 to 200 °F | D-Ring (Standard) | No | 10 Gal/min | Dual Pilot Operated | Internal (max): 2 Dpm (0.13 cc/min) across Check Valves | Pilot Piston Style | Line Mounted | Check Flow Cylinder to Valve | 5 psi | 4:1 | D-Ring (Standard) | No | 10 GAL/MIN, 38 L/MIN | 5 PSI, 0.3 BAR | 5000 PSI, 350 BAR | |
| CDPH103A100V-8T | Backordered | POR | 5000 psi | 3.39 lb | SAE | Hydraulic Systems Division | Synthetic Hydraulic Fluids | Hydraulic Cartridge Systems Division | -26 °C | Hardened Steel | ISO 4406 18/16/13 | 45-2000 SSU (6 to 420 cSt) | 400 °F | Steel | -8 | C10 | 16 Gal/min | Pressure Sensing | Automatic | 350 bar | -26 to 204 °C | Fluorocarbon | Yes | 60 L/min | Dual Pilot Operated | Internal (max): 2 Dpm (0.13 cc/min) across Check Valves | Pilot Piston Style | Line Mounted | Check Flow Cylinder to Valve | 6.9 bar | 4:1 | Fluorocarbon | Yes | 16 GAL/MIN, 60 L/MIN | 100 PSI, 6.9 BAR | 5000 PSI, 350 BAR | |
| CDPH103A20-8T | Backordered | $244.20 | 5000 psi | 1.5 kg | SAE | Hydraulic Systems Division | Synthetic Hydraulic Fluids | Hydraulic Cartridge Systems Division | -37 °C | Hardened Steel | ISO 4406 18/16/13 | 45-2000 SSU (6 to 420 cSt) | 93 °C | Steel | -8 | C10 | 16 Gal/min | Pressure Sensing | Automatic | 350 bar | -35 to 200 °F | D-Ring (Standard) | Yes | 16 Gal/min | Dual Pilot Operated | Internal (max): 2 Dpm (0.13 cc/min) across Check Valves | Pilot Piston Style | Line Mounted | Check Flow Cylinder to Valve | 20 psi | 4:1 | D-Ring (Standard) | Yes | 16 GAL/MIN, 60 L/MIN | 20 PSI, 1.4 BAR | 5000 PSI, 350 BAR | |
| CDPH103A20N-8T | Backordered | POR | 350 bar | 1.5 kg | SAE | Hydraulic Systems Division | Mineral-based Hydraulic Fluids | Hydraulic Cartridge Systems Division | -30 °F | Steel | SAE Class 4 | 45-2000 SSU (6 to 420 cSt) | 121 °C | Steel | -8 | C10 | 60 L/min | Pressure Sensing | Automatic | 5000 psi | -30 to 250 °F | Nitrile | Yes | 16 Gal/min | Dual Pilot Operated | 312 Cc/min across Pilot Piston (no seals) | Pilot Piston Style | Line Mounted | Free Flow Valve to Cylinder | 20 psi | 4:1 | Nitrile | Yes | 16 GAL/MIN, 60 L/MIN | 20 PSI, 1.4 BAR | 5000 PSI, 350 BAR | |
| CDPH103A20V-8T | Backordered | POR | 350 bar | 1.5 kg | SAE | Hydraulic Systems Division | Mineral-based Hydraulic Fluids | Hydraulic Cartridge Systems Division | -15 °F | Hardened Steel | SAE Class 4 | 45-2000 SSU (6 to 420 cSt) | 400 °F | Steel | -8 | C10 | 60 L/min | Pressure Sensing | Automatic | 350 bar | -26 to 204 °C | Fluorocarbon | Yes | 60 L/min | Dual Pilot Operated | 312 Cc/min across Pilot Piston (no seals) | Pilot Piston Style | Line Mounted | Check Flow Cylinder to Valve | 20 psi | 4:1 | Fluorocarbon | Yes | 16 GAL/MIN, 60 L/MIN | 20 PSI, 1.4 BAR | 5000 PSI, 350 BAR | |
| CDPH103A50-8T | Backordered | POR | 350 bar | 1.5 kg | SAE | Hydraulic Systems Division | Mineral-based Hydraulic Fluids | Hydraulic Cartridge Systems Division | -35 °F | Hardened Steel | SAE Class 4 | 45-2000 SSU (6 to 420 cSt) | 200 °F | Steel | -8 | C10 | 60 L/min | Pressure Sensing | Automatic | 5000 psi | -35 to 200 °F | D-Ring (Standard) | Yes | 60 L/min | Dual Pilot Operated | Internal (max): 2 Dpm (0.13 cc/min) across Check Valves | Pilot Piston Style | Line Mounted | Check Flow Cylinder to Valve | 50 psi | 4:1 | D-Ring (Standard) | Yes | 16 GAL/MIN, 60 L/MIN | 50 PSI, 3.5 BAR | 5000 PSI, 350 BAR | |
| CDPH103A65-8T | Backordered | POR | 350 bar | 3.39 lb | SAE | Hydraulic Systems Division | Mineral-based Hydraulic Fluids | Hydraulic Cartridge Systems Division | -35 °F | Hardened Steel | SAE Class 4 | 45-2000 SSU (6 to 420 cSt) | 93 °C | Steel | -8 | C10 | 16 Gal/min | Pressure Sensing | Automatic | 350 bar | -35 to 200 °F | D-Ring (Standard) | Yes | 60 L/min | Dual Pilot Operated | Internal (max): 2 Dpm (0.13 cc/min) across Check Valves | Pilot Piston Style | Line Mounted | Free Flow Valve to Cylinder | 4.5 bar | 4:1 | D-Ring (Standard) | Yes | 16 GAL/MIN, 60 L/MIN | 65 PSI, 4.5 BAR | 5000 PSI, 350 BAR | |
| CDPH103A65V-8T | Backordered | POR | 5000 psi | 3.39 lb | SAE | Hydraulic Systems Division | Synthetic Hydraulic Fluids | Hydraulic Cartridge Systems Division | -26 °C | Hardened Steel | ISO 4406 18/16/13 | 45-2000 SSU (6 to 420 cSt) | 400 °F | Steel | -8 | C10 | 16 Gal/min | Pressure Sensing | Automatic | 5000 psi | -26 to 204 °C | Fluorocarbon | Yes | 60 L/min | Dual Pilot Operated | Internal (max): 2 Dpm (0.13 cc/min) across Check Valves | Pilot Piston Style | Line Mounted | Check Flow Cylinder to Valve | 65 psi | 4:1 | Fluorocarbon | Yes | 16 GAL/MIN, 60 L/MIN | 65 PSI, 4.5 BAR | 5000 PSI, 350 BAR | |
| CDPH103P100-8T | Backordered | POR | 350 bar | 1.5 kg | SAE | Hydraulic Systems Division | Mineral-based Hydraulic Fluids | Hydraulic Cartridge Systems Division | -35 °F | Steel | ISO 4406 18/16/13 | 45-2000 SSU (6 to 420 cSt) | 93 °C | Steel | -8 | C10 | 60 L/min | Pressure Sensing | Automatic | 5000 psi | -35 to 200 °F | D-Ring (Standard) | No | 16 Gal/min | Dual Pilot Operated | 312 Cc/min across Pilot Piston (no seals) | Pilot Piston Style | Line Mounted | Free Flow Valve to Cylinder | 100 psi | 4:1 | D-Ring (Standard) | No | 16 GAL/MIN, 60 L/MIN | 100 PSI, 6.9 BAR | 5000 PSI, 350 BAR | |
| CDPH103P100V-8T | Backordered | POR | 5000 psi | 3.39 lb | SAE | Hydraulic Systems Division | Synthetic Hydraulic Fluids | Hydraulic Cartridge Systems Division | -26 °C | Hardened Steel | ISO 4406 18/16/13 | 45-2000 SSU (6 to 420 cSt) | 400 °F | Steel | -8 | C10 | 16 Gal/min | Pressure Sensing | Automatic | 350 bar | -26 to 204 °C | Fluorocarbon | No | 60 L/min | Dual Pilot Operated | Internal (max): 2 Dpm (0.13 cc/min) across Check Valves | Pilot Piston Style | Line Mounted | Check Flow Cylinder to Valve | 6.9 bar | 4:1 | Fluorocarbon | No | 16 GAL/MIN, 60 L/MIN | 100 PSI, 6.9 BAR | 5000 PSI, 350 BAR | |
| CDPH103P20-8T | Backordered | POR | 5000 psi | 1.5 kg | SAE | Hydraulic Systems Division | Mineral-based Hydraulic Fluids | Hydraulic Cartridge Systems Division | -35 °F | Steel | ISO 4406 18/16/13 | 45-2000 SSU (6 to 420 cSt) | 93 °C | Steel | -8 | C10 | 16 Gal/min | Pressure Sensing | Automatic | 350 bar | -37 to 93 °C | D-Ring (Standard) | No | 16 Gal/min | Dual Pilot Operated | Internal (max): 2 Dpm (0.13 cc/min) across Check Valves | Pilot Piston Style | Line Mounted | Check Flow Cylinder to Valve | 20 psi | 4:1 | D-Ring (Standard) | No | 16 GAL/MIN, 60 L/MIN | 20 PSI, 1.4 BAR | 5000 PSI, 350 BAR | |
| CDPH103P20N-8T | Backordered | POR | 350 bar | 3.39 lb | SAE | Hydraulic Systems Division | Synthetic Hydraulic Fluids | Hydraulic Cartridge Systems Division | -34 °C | Hardened Steel | SAE Class 4 | 45-2000 SSU (6 to 420 cSt) | 121 °C | Steel | -8 | C10 | 16 Gal/min | Pressure Sensing | Automatic | 5000 psi | -34 to 121 °C | Nitrile | No | 16 Gal/min | Dual Pilot Operated | 312 Cc/min across Pilot Piston (no seals) | Pilot Piston Style | Line Mounted | Free Flow Valve to Cylinder | 1.4 bar | 4:1 | Nitrile | No | 16 GAL/MIN, 60 L/MIN | 20 PSI, 1.4 BAR | 5000 PSI, 350 BAR | |
| CDPH103P20V-8T | Backordered | POR | 5000 psi | 3.39 lb | SAE | Hydraulic Systems Division | Mineral-based Hydraulic Fluids | Hydraulic Cartridge Systems Division | -26 °C | Hardened Steel | ISO 4406 18/16/13 | 45-2000 SSU (6 to 420 cSt) | 204 °C | Steel | -8 | C10 | 16 Gal/min | Pressure Sensing | Automatic | 350 bar | -15 to 400 °F | Fluorocarbon | No | 16 Gal/min | Dual Pilot Operated | Internal (max): 2 Dpm (0.13 cc/min) across Check Valves | Pilot Piston Style | Line Mounted | Check Flow Cylinder to Valve | 1.4 bar | 4:1 | Fluorocarbon | No | 16 GAL/MIN, 60 L/MIN | 20 PSI, 1.4 BAR | 5000 PSI, 350 BAR | |
| CDPH103P50-8T | Backordered | POR | 350 bar | 1.5 kg | SAE | Hydraulic Systems Division | Mineral-based Hydraulic Fluids | Hydraulic Cartridge Systems Division | -35 °F | Steel | SAE Class 4 | 45-2000 SSU (6 to 420 cSt) | 93 °C | Steel | -8 | C10 | 60 L/min | Pressure Sensing | Automatic | 5000 psi | -37 to 93 °C | D-Ring (Standard) | No | 16 Gal/min | Dual Pilot Operated | 312 Cc/min across Pilot Piston (no seals) | Pilot Piston Style | Line Mounted | Free Flow Valve to Cylinder | 50 psi | 4:1 | D-Ring (Standard) | No | 16 GAL/MIN, 60 L/MIN | 50 PSI, 3.5 BAR | 5000 PSI, 350 BAR | |
| CDPH103P50N-8T | Backordered | POR | 350 bar | 1.5 kg | SAE | Hydraulic Systems Division | Mineral-based Hydraulic Fluids | Hydraulic Cartridge Systems Division | -30 °F | Hardened Steel | SAE Class 4 | 45-2000 SSU (6 to 420 cSt) | 250 °F | Steel | -8 | C10 | 60 L/min | Pressure Sensing | Automatic | 350 bar | -30 to 250 °F | Nitrile | No | 60 L/min | Dual Pilot Operated | Internal (max): 2 Dpm (0.13 cc/min) across Check Valves | Pilot Piston Style | Line Mounted | Check Flow Cylinder to Valve | 3.5 bar | 4:1 | Nitrile | No | 16 GAL/MIN, 60 L/MIN | 50 PSI, 3.5 BAR | 5000 PSI, 350 BAR |
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