SUN HYDRAULICS
RVGDLEV

***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 RVGDLEV (RVGDLEV) is a ventable, pilot-operated, balanced piston relief cartridge with an external drain, designed for precise pressure regulation. These normally closed valves begin to open to tank port 2 when the inlet port 1 pressure reaches the valve setting, effectively throttling flow to maintain the desired pressure. They feature a vent port 3 for remote control by other pilot or 2-way valves and a drain port 4 that renders them insensitive to back pressure. Notably accurate and smooth in operation, these valves exhibit low-pressure rise versus flow and are moderately fast in response. They can withstand maximum pressure at port 2, making them suitable for cross-port relief circuits, though spool leakage should be considered in such applications. The main stage orifice is safeguarded by a 150-micron stainless steel screen. However, these valves are not recommended for load-holding applications due to potential spool leakage. The pressure at port 4 directly adds to the valve setting at a ratio of 1:1 and should not exceed 5000 psi (350 bar). The RVGDLEV incorporates Sun's floating style construction to mitigate internal part binding from excessive installation torque or cavity/cartridge machining variations. It fits the Cavity T-23A with a series capacity of up to 60 gpm (240 L/min) and has factory pressure settings established at 4 gpm (15 L/min). Its maximum operating pressure is capped at 5000 psi (350 bar), with control pilot flow ranging between 15-20 in\u00b3/min (0.25-0.33 L/min) and a typical response time of around 10 ms. Maximum valve leakage is specified as four in\u00b3/min at 110 SUS (24 cSt) under conditions of up to 1000 psi (70 bar). For installation, it requires a torque of between 150-160 lbf ft (203-217 Nm), ensuring secure placement without risk of operational inefficiency.