SUN HYDRAULICS
SCGALEV

***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Sun Hydraulics directly.***
The Sun Hydraulics SCGALEV (Material Number: SCGALEV) is a direct-acting sequence valve equipped with a reverse flow check, designed to deliver flow to a secondary circuit once the inlet port pressure exceeds the valve setting. This valve features an integral check valve that allows reverse flow from port 2 to port 1. It controls the pressure at port 1 relative to the drain port 3, and all three-port sequence cartridges are interchangeable, sharing the same flow path and cavity for a given frame size. Despite being a zero pilot flow valve, it is crucial that port 3 remains connected to maintain pressure reference in the control chamber; otherwise, blocking this port may lead to malfunction due to seal weepage. The pressure at port 3 adds directly to the valve setting at a 1:1 ratio and should not surpass 5000 psi (350 bar). This model is suitable for load-holding applications and incorporates Sun's floating style construction, reducing internal part binding risks due to installation torque or cavity machining variations. The SCGALEV has a capacity of up to 60 gpm (240 L/min) and can operate under pressures up to 5000 psi (350 bar). It responds typically within 2 milliseconds and has maximum valve leakage at reseat of approximately 10 drops per minute (0.7 cc/min). The check cracking pressure is rated at 25 psi (1.7 bar), with an adjustment range allowing up to five full clockwise turns for setting increase. Installation requires specific torque settings: Valve Hex Size is 1-1/4 inches with installation torque between 150-160 lbf-ft (203-217 Nm), while Locknut Hex Size is 9/16 inches with locknut torque between 80-90 lbf-in (9-10 Nm). The model weighs approximately 1.50 lb (0.70 kg) and utilizes Viton seals in its cartridge design, ensuring durability and performance in hydraulic systems.