SUN HYDRAULICS
RPGEFKV

***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 RPGEFKV (RPGEFKV) is a fast-acting, pilot-operated, balanced piston relief cartridge designed for hydraulic systems to protect components from pressure transients. This valve is typically used in applications requiring rapid response to pressure changes, gaining speed at the expense of smooth operation. When inlet port 1 reaches the set pressure, the valve opens to tank port 2, controlling flow to limit pressure rise. It features low pressure rise versus flow and a response time of approximately 2 ms. The RPGEFKV model is suitable for cross-port relief circuits with considerations for spool leakage and can handle maximum pressure at port 2. However, it is not recommended for load-holding applications due to potential leakage. The valve's main stage orifice is safeguarded by a 150-micron stainless steel screen, and it incorporates Sun's floating style construction to reduce internal binding risks during installation. The cartridge can be configured with EPDM seals for phosphate ester fluid systems but should avoid petroleum-based fluids to prevent seal damage. It has a capacity of 50 gpm (200 L/min) and operates at pressures up to 5000 psi (350 bar). The valve's design includes specific installation requirements such as a hex size of 1-1/8 inches (28.6 mm) and an installation torque range of 45-50 lbf-ft (61-68 Nm). Adjustments are made via an internal hex screw with five clockwise turns needed to increase settings. The model weighs approximately .50 lb (.25 kg), and its seal kit uses Viton material.