SUN HYDRAULICS
RPCCLCE

***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 RPCCLCE (Material Number: RPCCLCE) is a pilot-operated, balanced piston relief cartridge designed for effective pressure regulation in hydraulic systems. This valve remains normally closed until the pressure at the inlet port reaches a pre-set level, at which point it opens to the tank port, allowing flow to regulate the pressure accurately and smoothly. Notable for its low pressure rise versus flow, the RPCCLCE operates quietly and with moderate speed. It is interchangeable with other 2-port relief cartridges of similar frame size and can handle maximum pressure at port 2, making it suitable for cross-port relief circuits while taking into account potential spool leakage. The valve's minimum setting is 75 psi (5 bar) across all spring ranges and is not recommended for load-holding applications due to spool leakage considerations. It features a back pressure on the tank port that directly adds to the valve setting at a 1:1 ratio. The main stage orifice is protected against contamination, enhancing reliability in various conditions. Additionally, cartridges equipped with EPDM seals are compatible with phosphate ester fluids but should avoid exposure to petroleum-based substances to prevent seal damage. The RPCCLCE incorporates Sun's floating style construction, reducing risks of internal part binding from excessive installation torque or machining variations. With a capacity of 12 gpm (45 L/min), this cartridge can operate under a maximum pressure of 5000 psi (350 bar) and offers a typical response time of 10 ms. It also features an adjustment mechanism that allows for fine-tuning with up to five clockwise turns and requires specific installation torques for optimal performance. The model weighs approximately 0.20 lb (0.10 kg) and comes with a Viton seal kit available under part number 990162006.