SUN HYDRAULICS
SCCALWE

***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 SCCALWE (SCCALWE) is a direct-acting sequence valve with a reverse flow check designed to supply a secondary circuit with flow once the inlet port 1 pressure surpasses the valve setting. It features an integral check valve that allows reverse flow from port 2 to port 1. The pressure setting manages the pressure at port 1 relative to the drain port 3, which must remain connected to ensure proper function. Pressure at port 3 should not exceed 5000 psi (350 bar) and is directly additive to the valve setting at a 1:1 ratio. This sequence valve is suitable for load-holding applications and offers interchangeable functionality within its series, sharing the same flow path and cavity size. The SCCALWE model can be configured with EPDM seals for systems using phosphate ester fluids, although exposure to petroleum-based fluids can damage these seals. Corrosion-resistant options are available, identified by suffixes AP or LH, indicating stainless steel or zinc-nickel plated components, respectively. The valve employs Sun's floating style construction to reduce internal binding risks due to installation torque or machining variations. The SCCALWE has a capacity of 15 gpm (60 L/min) and operates under a maximum pressure of 5000 psi (350 bar). It exhibits typical response times of approximately 2 ms and has a maximum leakage rate of 10 drops/min at reseat conditions. The adjustment screw allows for clockwise turns to increase settings up to five turns. The valve's hex size is .78 inches (22.2 mm), with an installation torque range of 30\u201335 lbf ft (41\u201347 Nm). Seal kits are available in Viton material under part number 990011006 for maintenance purposes.