SUN HYDRAULICS
RVEDLWN

***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 RVEDLWN (RVEDLWN) is a ventable, pilot-operated, balanced piston relief cartridge with an external drain, designed to serve as a normally closed pressure regulating valve. It activates when the inlet port 1 pressure reaches the predetermined valve setting, allowing it to open to tank port 2 and throttle flow to maintain regulated pressure. This model includes a vent port 3 for remote control capabilities via other pilot or 2-way valves and a drain port 4 that ensures insensitivity to back pressure. Notably accurate with low pressure rise versus flow, the RVEDLWN operates smoothly and quietly with moderate speed. This valve can handle maximum pressure at port 2, making it suitable for cross-port relief circuits; however, users should consider spool leakage in these applications. The main stage orifice is protected by a 150-micron stainless steel screen but is not suitable for load-holding applications due to spool leakage concerns. The valve setting is directly influenced by pressure at port 4 at a ratio of 1:1, not exceeding 5000 psi (350 bar). Cartridges configured with EPDM seals are intended for systems using phosphate ester fluids as exposure to petroleum-based substances may cause damage. The RVEDLWN features Sun's floating style construction minimizing internal part binding risks due to excessive installation torque or cavity/cartridge machining variations. It fits into Cavity T-22A Series 2 and has a capacity of up to 30 gpm (120 L/min) with factory settings established at 4 gpm (15 L/min). The maximum operating pressure is rated at 5000 psi (350 bar), with control pilot flow between 10 -15 in\u00b3/min (0.16 -0.25 L/min) and typical response time of about 10 ms. Maximum allowable valve leakage at specified conditions is up to 3 in\u00b3/min (50 cc/min).