SUN HYDRAULICS
RVCDWWN

***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 RVCDWWN (RVCDWWN) is a ventable, pilot-operated, balanced piston relief cartridge with an external drain, designed for precise pressure regulation. It operates as a normally closed pressure regulating valve, opening to the tank port when the inlet pressure reaches the valve setting, thereby throttling flow to maintain desired pressure levels. This model features a vent port that allows remote control via other pilot or two-way valves and a drain port that ensures insensitivity to back pressure. Key attributes include accuracy, low-pressure rise versus flow, smooth operation, moderate speed, and quiet performance. The valve is particularly suitable for cross-port relief circuits due to its ability to accept maximum pressure at port 2; however, users should consider spool leakage in such applications. The RVCDWWN model incorporates a main stage orifice protected by a 150-micron stainless steel screen and is not recommended for load-holding applications due to potential spool leakage. Pressure at port 4 directly adds to the valve setting at a 1:1 ratio and should not exceed 5000 psi (350 bar). Cartridges with EPDM seals are intended for systems using phosphate ester fluids only. The valve features Sun's floating style construction to prevent internal part binding due to installation torque or machining variations. This cartridge fits into Cavity T-21A Series 1 with a capacity of up to 15 gpm (60 L/min) and has factory pressure settings established at 4 gpm (15 L/min). It can handle maximum operating pressures of up to 5000 psi (350 bar) with control pilot flow ranging from 7-10 in\u00b3/min (0.11-0.16 L/min). Its response time is typically around 10 ms, and maximum valve leakage stands at 2 in\u00b3/min at 1000 psi (30 cc/min at 70 bar).