SUN HYDRAULICS
RPIEKWV

***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 RPIEKWV (RPIEKWV) is a fast-acting, pilot-operated, balanced piston relief cartridge designed to protect hydraulic components from pressure transients. These normally closed, pressure-limiting valves open quickly to tank port 2 when the inlet port 1 reaches the valve's set pressure, effectively throttling flow to control pressure rise. Notably fast in operation, these valves exhibit low pressure rise versus flow characteristics. They are physically and functionally interchangeable with other 2-port relief cartridges of the same frame size and flow path. Suitable for cross port relief circuits, they can handle maximum pressure at port 2 but are not recommended for load-holding applications due to potential spool leakage. The main stage orifice is safeguarded by a 150-micron stainless steel screen, and the valve features Sun's floating style construction to minimize internal binding from installation torque or machining variations. The RPIEKWV model fits into cavity T-16A Series 3 and offers a capacity of up to 100 gpm (380 L/min), with factory pressure settings established at 4 gpm (15 L/min). It operates at a maximum pressure of 5000 psi (350 bar) with typical response times around 2 ms and minimal leakage rates of up to 4 in\u00b3/min at standard viscosity levels. The valve dimensions include a hex size of 1-1/4 inches (31.8 mm) for installation torque ranging between 150-160 lbf ft (203-217 Nm). Adjustments can be made via an internal hex screw sized at 5/32 inches (4 mm), with locknut adjustments requiring a torque of 80-90 lbf in (9-10 Nm). Weighing approximately 1.20 lb (0.55 kg), this model comes equipped with Viton seals under part number 990016006 for reliable sealing performance in various hydraulic applications.