SUN HYDRAULICS
SCEAKEV

***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 SCEAKEV (SCEAKEV) is a direct-acting sequence valve with reverse flow check, designed to supply a secondary circuit with flow once the pressure at inlet port 1 surpasses the valve setting. This valve features an integral check valve that facilitates reverse flow from port 2 sequence to port 1 inlet. The pressure setting of this sequence valve manages the pressure at port 1 relative to the drain port 3. Despite being a zero pilot flow valve, it is crucial that port 3 drain remains connected to maintain a proper pressure reference within the control chamber; blocking port 3 can lead to malfunction due to reciprocating seal weepage. The pressure at port 3 adds directly to the valve setting in a 1:1 ratio and should not exceed 5000 psi (350 bar). This product is suitable for load holding applications and offers physical and functional interchangeability among all three-port sequence cartridges, maintaining the same flow path and cavity for a given frame size. It incorporates Sun's floating style construction, reducing internal parts binding risks due to excessive installation torque or cavity/cartridge machining variations. The SCEAKEV model has a capacity of 30 gpm (120 L/min) and operates under a maximum pressure of 5000 psi (350 bar), with a typical response time of about 2 ms. It allows for maximum valve leakage at reseat up to 10 drops/min (0.7 cc/min) and features an adjustment range where clockwise turns increase settings up to five turns. This model weighs .60 lb (0.30 kg) and uses Viton seal kits identified by part number 990202006 for maintenance or replacement needs.