SUN HYDRAULICS
RPKSCCV

***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 RPKSCCV (RPKSCCV) is a pilot-operated, balanced poppet relief cartridge designed for precise pressure regulation. This normally closed valve opens to tank port 2 when the inlet port 1 pressure reaches a preset level, throttling flow to maintain desired pressure levels. Known for its accuracy, smooth operation, quiet performance, and quick response time of approximately 7 milliseconds, this valve exhibits a low pressure rise versus flow characteristic. It is engineered to handle maximum pressures up to 5000 psi (350 bar) and is suitable for cross-port relief circuits due to its ability to accept maximum pressure at port 2. The valve's design minimizes issues like noise and manifold erosion associated with cavitation and maintains stability even with varying oil temperatures and contamination. The RPKSCCV features a main stage orifice protected by a 150-micron stainless steel screen and incorporates Sun's floating style construction to prevent internal part binding due to installation torque or machining variations. With a capacity of 200 gpm (760 L/min), it has minimal leakage at reseat, measuring at just 10 drops/min (0.7 cc/min). The valve allows for adjustment through the W or Y control across its full range unless a special setting is specified. Additionally, it can be equipped with corrosion-resistant components identified by suffixes AP or LH in the model code. Installation requires specific torque values: the valve hex size is 1-5/8 in (41.3 mm), with an installation torque between 350-375 lbf ft (474-508 Nm). The adjustment screw has an internal hex size of 5/32 in (4 mm), while the locknut hex size is 9/16 in (15 mm) with a torque requirement of 80-90 lbf in (9-10 Nm). Weighing approximately 2.50 lb (1.15 kg), this valve also supports various configurations detailed under Sun's technical resources section for customized applications.