SUN Counterbalance Cartridge Valves

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 CAA, CAK; 4600 psi with 6000 psi valve setting for CAG, CAL. 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.

Available in: Arkansas, Louisiana, Oklahoma and Texas