SUN HYDRAULICS
RPIELAV

***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 RPIELAV (RPIELAV) is a fast-acting, pilot-operated, balanced piston relief cartridge designed to protect hydraulic components from pressure transients. This normally closed, pressure-limiting valve opens quickly to throttle flow and limit pressure rise when the inlet port reaches the valve setting. It is characterized by low pressure rise versus flow and rapid response times. The valve is suitable for cross-port relief circuits, accepting maximum pressure at port 2, though users should consider spool leakage in such applications. The main stage orifice is safeguarded by a 150-micron stainless steel screen, and the valve's floating style construction helps prevent internal binding due to excessive installation torque or machining variations. Notably, this cartridge is not intended for load-holding applications due to potential spool leakage. The RPIELAV features a T-16A cavity and Series 3 capacity of up to 100 gpm (380 L/min). It operates at a maximum pressure of 5000 psi (350 bar) with typical response times around 2 ms. Maximum valve leakage at 110 SUS (24 cSt) is specified at 4 in\u00b3/min (65 cc/min) under 1000 psi (70 bar). Adjustments are made via an internal hex screw with five clockwise turns increasing the setting; it includes a locknut for securing adjustments. The valve's hex size measures 1\u00bc inches (31.8 mm), requiring installation torque between 150-160 lbf ft (203-217 Nm), while the locknut demands torque of 80-90 lbf in (9-10 Nm). Weighing approximately 1.20 lb (0.55 kg), this unit incorporates Viton seals for durability and reliability in various hydraulic applications where quick relief from overpressure conditions is essential.