SUN HYDRAULICS
RVCALGV

***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 RVCALGV (RVCALGV) is a ventable, pilot-operated, balanced piston relief cartridge designed as a normally closed pressure regulating valve. It functions by opening to the tank port when the inlet port pressure reaches the pre-set level, thereby throttling flow to regulate pressure. This model features a vent port that allows for remote control by other pilot or two-way valves, offering enhanced operational versatility. It excels in accuracy and maintains a low pressure rise relative to flow, ensuring smooth and quiet operation with moderate speed. The valve can handle maximum pressure at port 2 and is suitable for use in cross-port relief circuits; however, spool leakage should be considered in such applications. The main stage orifice is safeguarded by a 150-micron stainless steel screen. Notably, it is not suitable for load-holding applications due to potential spool leakage. The valve's back pressure on the tank port directly affects the valve setting at a 1:1 ratio. Cartridges equipped with EPDM seals are intended for systems using phosphate ester fluids; exposure to petroleum-based fluids can damage these seals. The design incorporates Sun's floating style construction to minimize internal binding due to installation torque or machining variations. With a cavity type T-11A and Series 1 capacity of 15 gpm (60 L/min), it operates at a maximum pressure of 5000 psi (350 bar). The control pilot flow ranges from 7-10 in\u00b3/min (0.11-0.16 L/min) with a typical response time of 10 ms and maximum leakage of 2 in\u00b3/min at 1000 psi (30 cc/min at 70 bar). Adjustments are made via an internal hex screw with specified torque settings for secure operation.