SUN HYDRAULICS
RVCAQDN

***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 RVCAQDN (RVCAQDN) is a ventable, pilot-operated, balanced piston relief cartridge designed to regulate pressure in hydraulic systems. This pressure-regulating valve is normally closed and opens when the inlet port reaches the preset pressure, directing flow to the tank port to maintain consistent pressure levels. It features a vent port for remote control by pilot or 2-way valves. Known for its accuracy and smooth operation, this valve is suitable for cross-port relief circuits but not recommended for load-holding applications due to potential spool leakage. The main stage orifice is protected by a 150-micron stainless steel screen, and it can handle maximum pressures at port 2. The back pressure on the tank port adds directly to the valve setting at a 1:1 ratio. The cartridge incorporates Sun's floating style construction, minimizing risks of internal part binding from excessive torque or machining variations. This model has a capacity of 15 gpm (60 L/min) with factory pressure settings established at 4 gpm (15 L/min). It operates at a maximum pressure of 5000 psi (350 bar) and has a control pilot flow of 7-10 in\u00b3/min (0.11-0.16 L/min). Typical response time is around 10 ms, with maximum valve leakage at 110 SUS being approximately 2 in\u00b3/min (30 cc/min) at 1000 psi (70 bar). Adjustment requires up to five clockwise turns, with specific torque specifications provided for installation and locknut adjustments. Weighing just .40 lb (.20 kg), this cartridge also offers compatibility with EPDM seals for phosphate ester fluid systems while avoiding petroleum-based substances that could damage these seals.