Sun Hydraulics
SUN Counterbalance Cartridge Valves
Womack Machine Supply Company proudly partners with Sun Hydraulics 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 Sun Hydraulics, guarantees that you receive top-quality Load Holding Valves components for your specific needs.
Sun Hydraulics counterbalance cartridges, modulating devices for load holding and motion control, can be directly integrated into your actuator or applied using manifolds with many mounting options.
- Offer hose break protection
- Prevent loads from drifting
- Control overrunning loads
- Provide overcenter load control
- Protect against pressure due to thermal expansion
- Are physically interchangeable with pilot-to-open check cartridges (same number of ports, same cavities, same flow path for a given frame size)
Standard, 4000 psi Maximum Setting
- Load holding to 3000 psi with 4000 psi valve setting
- Maximum valve leakage at reseat = 5 drops/min.
- Reseat exceeds 85% of set pressure
- Factory pressure setting established at 2 in³/min.
- Counterbalance valves should be set at least 1.3 times the maximum load induced pressure.
- Back pressure at port 2 adds to the effective relief setting at a ratio of 1 plus the pilot ratio times the back pressure.
Standard, 5000 psi Maximum Setting
- Load holding to 3850 psi with 5000 psi valve setting
- Maximum valve leakage at reseat = 5 drops/min.
- Reseat exceeds 85% of set pressure
- Factory pressure setting established at 2 in³/min.
- Counterbalance valves should be set at least 1.3 times the maximum load induced pressure.
- Back pressure at port 2 adds to the effective relief setting at a ratio of 1 plus the pilot ratio times the back pressure.
Semi-Restrictive, 4000 psi Maximum Setting
- Load holding to 3000 psi with 4000 psi valve setting
- Maximum valve leakage at reseat = 5 drops/min.
- Reseat exceeds 85% of set pressure
- Factory pressure setting established at 2 in³/min.
- Counterbalance valves should be set at least 1.3 times the maximum load induced pressure.
- Back pressure at port 2 adds to the effective relief setting at a ratio of 1 plus the pilot ratio times the back pressure.
Semi-Restrictive, 5000 psi Maximum Setting
- Load holding to 3850 psi with 5000 psi valve setting
- Maximum valve leakage at reseat = 5 drops/min.
- Reseat exceeds 85% of set pressure
- Factory pressure setting established at 2 in³/min.
- Counterbalance valves should be set at least 1.3 times the maximum load induced pressure.
- Back pressure at port 2 adds to the effective relief setting at a ratio of 1 plus the pilot ratio times the back pressure.
Restrictive, 4000 psi Maximum Setting
- Restrictive valves have no relief capacity other than as a thermal relief.
- Load holding to 3075 psi with 4000 psi valve setting
- Maximum valve leakage at reseat = 5 drops/min.
- Reseat exceeds 85% of set pressure
- Factory pressure setting established at 2 in³/min.
- Counterbalance valves should be set at least 1.3 times the maximum load induced pressure.
- Back pressure at port 2 adds to the effective relief setting at a ratio of 1 plus the pilot ratio times the back pressure.
Restrictive, 5000 psi Maximum Setting
- Restrictive valves have no relief capacity other than as a thermal relief.
- Load holding to 3850 psi with 5000 psi valve setting
- Maximum valve leakage at reseat = 5 drops/min.
- Reseat exceeds 85% of set pressure
- Factory pressure setting established at 2 in³/min.
- Counterbalance valves should be set at least 1.3 times the maximum load induced pressure.
- Back pressure at port 2 adds to the effective relief setting at a ratio of 1 plus the pilot ratio times the back pressure.
Without Pilot Assist, 3 Port Cavity
- Maximum operating pressure = 4000 psi
- Maximum valve leakage at reseat = 5 drops/min.
- Reseat exceeds 85% of set pressure
- Factory pressure setting established at 2 in³/min.
- Counterbalance valves should be set at least 1.3 times the maximum load induced pressure.
- Back pressure at port 2 is directly additive to the relief setting of the valve.
Atmospherically Referenced, 3 Port Cavity
- Load holding to 3000 psi with 4000 psi valve setting for CA*A, CA*K; 4600 psi with 6000 psi valve setting for CA*G, CA*L.
- Maximum valve leakage at reseat = 5 drops/min.
- Reseat exceeds 85% of set pressure
- Factory pressure setting established at 2 in³/min.
- Free flow check cracking pressure = 40 psi
- Counterbalance valves should be set at least 1.3 times the maximum load induced pressure.
Vented, 4000 psi Maximum Setting
- Load holding to 3000 psi with 4000 psi valve setting
- Maximum valve leakage at reseat = 5 drops/min.
- Reseat exceeds 85% of set pressure
- Factory pressure setting established at 2 in³/min.
- Free flow check cracking pressure = 40 psi
- Counterbalance valves should be set at least 1.3 times the maximum load induced pressure.
Vented, 6000 psi Maximum Setting
- Load holding to 4600 psi with 6000 psi valve setting
- Maximum valve leakage at reseat = 5 drops/min.
- Reseat exceeds 85% of set pressure
- Factory pressure setting established at 2 in³/min.
- Free flow check cracking pressure = 40 psi
- Counterbalance valves should be set at least 1.3 times the maximum load induced pressure.
Vented, 6000 psi Maximum Setting
- Load holding to 4600 psi with 6000 psi valve setting
- Maximum valve leakage at reseat = 5 drops/min.
- Reseat exceeds 85% of set pressure
- Factory pressure setting established at 2 in³/min.
- Free flow check cracking pressure = 40 psi
- Counterbalance valves should be set at least 1.3 times the maximum load induced pressure.
AVAILABLE IN THESE LOCATIONS
- Arkansas
- Louisiana
- Oklahoma
- Texas
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!