Sun Balancing Valve CGG-LJN-VEZ T1
SUN Balancing Valve CBEG-LJN-WQT T
SUN Balancing Valve CBCG-LJN-XGU S
SUN Balancing Valve CBCG-LJN-Z9U T
A balancing valve with pilot assist is used to control the overload load. The check valve allows free flow from the directional valve (port 2) to the load (port 1), while the direct-acting pilot auxiliary safety valve controls the flow from port 1 to port 2. The pilot assist at port 3 reduces the effective setpoint of the safety valve at a rate determined by the pilot ratio.
Other names for this valve include motion control valves and eccentric valves.
The balancing valve should be set to at least 1 of the maximum load-sensing pressure3 times.
Turn the adjustment clockwise to reduce the setting and release the load.
Set perfectly clockwise to less than 200 psi (14 bar).
The back pressure at port 2 is increased to the effective relief setting by the ratio of 1 plus the pilot ratio multiplied by the back pressure.
When the valve is set as standard, reset it to more than 85% of the set pressure. Lower than standard set pressure settings may result in a reduced percentage of resealing.
Sleeves equipped with EPDM seals are suitable for systems containing phosphate ester fluids. Contact with petroleum-based fluids, greases, and lubricants can damage seals.
The SUN balanced spool can be mounted directly into a machined cavity in the actuator housing to increase protection and improve the stiffness of the circuit.
Two types of check valve opening pressures are available. Use 25 pounds square inch (1.).7 bar), unless there is a problem with the cavitation of the actuator.
The valve has a positive seal between all ports.
All three-port balancing, load control, and pilot open check spools are physically interchangeable (i.e., same flow path, same cavity for a given frame size).
The SUN floating structure minimizes the possibility of internal parts sticking due to excessive mounting torque or cavity chuck machining variations.
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