SUN HYDRAULICS
RSHCKWN

***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 RSHCKWN (RSHCKWN) is a pilot-operated, balanced piston sequence valve designed to supply a secondary circuit with flow once the pressure at inlet port 1 surpasses the preset valve setting. This valve is engineered to control the pressure at port 1 relative to the drain port 3, remaining unaffected by back pressure at port 2 up to the valve setting. It can function as a pressure regulator in lieu of two-port relief valves if there is pressure in the return line. Notably, all three-port sequence cartridges are interchangeable in terms of flow path and cavity for any given frame size. The pilot flow increases as the inlet pressure at port 1 exceeds that at port 3, and the main stage orifice is safeguarded by a 150-micron stainless steel screen. The maximum allowable pressure at port 3 should not exceed 5000 psi (350 bar), and this value directly adds to the valve setting on a one-to-one basis. However, this model is unsuitable for load-holding applications due to potential spool leakage. The RSHCKWN incorporates Sun's floating style construction, minimizing internal part binding risks due to excessive installation torque or machining variations. It has a cavity size of T-17A, Series 3 with a capacity of up to 60 gpm (240 L/min). Factory settings are established at 4 gpm (15 L/min), with a maximum operating pressure of 5000 psi (350 bar). The control pilot flow ranges from 15 to 20 in\u00b3/min (0.25 \u2013 0.33 L/min), and it features a typical response time of about 10 ms. The valve allows for adjustment throughout its full range using W or Y controls unless specified otherwise, where special settings denote maximum limits. It has specific installation requirements including torque specifications and uses Viton seal kits for maintenance purposes.