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Sun hydraulics scga-lan sequence valve
Direct-acting sequence valve with reverse flow check
Direct-acting sequence valves with reverse-flow check will supply a secondary circuit with flow once the pressure at the inlet (port 1) has exceeded the valve setting. Additionally, these valves incorporate an integral check valve to provide reverse flow from port 2 (sequence) to port 1 (inlet). The pressure setting of a sequence valve controls the pressure at port 1 relative to the pressure at the drain (port 3).
* All 3 port sequence cartridges are physically and functionally interchangeable (i.e. same flow path, same cavity for a given frame size).
* Although this is a zero pilot flow valve, port 3 (drain) must be connected to maintain a pressure reference in the control chamber. If port 3 is blocked, reciprocating seal weepage will cause the valve to malfunction.
* Pressure at port 3 is directly additive to the valve setting at a 1:1 ratio and should not exceed 5000 psi (350 bar).
* Suitable for use in load holding applications.
* Incorporates the Sun floating style construction to eliminate the effects of internal parts binding due to excessive installation torque and/or cavity/cartridge machining variations.
Adjustment - Number of Clockwise Turns to Increase Setting
Factory Pressure Settings Established at
Free Flow Check Cracking Pressure
Maximum Valve Leakage at Reseat
Adjustment Screw Hex Socket Size
External Material/Seal Material
500 - 3000 psi (35 - 210 bar), 1000 psi (70 bar) Standard Setting
800 - 4500 psi (55 - 315 bar), 1000 psi (70 bar) Standard Setting
