SUN HYDRAULICS
SCEAKEN

***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 SCEAKEN (SCEAKEN) is a direct-acting sequence valve equipped with a reverse flow check, designed to supply a secondary circuit with flow once the inlet port 1 pressure surpasses the valve setting. This model integrates an integral check valve facilitating reverse flow from port 2 to port 1. The pressure setting governs the pressure at port 1 relative to the drain port 3, necessitating a connection to maintain a pressure reference in the control chamber. Blocking port 3 can lead to malfunction due to seal weepage, and its pressure should not exceed 5000 psi (350 bar). This valve is apt for load-holding applications and is interchangeable with other three-port sequence cartridges of the same frame size, maintaining consistent flow paths and cavity dimensions. It features Sun's floating style construction to reduce internal binding risks from installation torque or machining variations. The SCEAKEN has a capacity of 30 gpm (120 L/min) and operates at a maximum pressure of 5000 psi (350 bar). It exhibits a typical response time of 2 ms and allows maximum valve leakage at reseat of up to 10 drops/min (0.7 cc/min). The check cracking pressure stands at 25 psi (1.7 bar), with adjustments made through clockwise turns\u2014up to five\u2014and an installation torque range between 45-50 lbf ft (61-68 Nm). The adjustment screw uses an internal hex size of 5/32 in. (4 mm), complemented by a locknut hex size of 9/16 in. (15 mm) requiring torque between 80-90 lbf in. (9-10 Nm). The model weighs approximately .60 lb (.30 kg) and utilizes Viton seals, available under seal kit part number: 990202006.