SUN HYDRAULICS
RVEDLYN

***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 RVEDLYN (RVEDLYN) is a ventable, pilot-operated, balanced piston relief cartridge with an external drain, designed as a normally closed pressure regulating valve. It activates when the inlet port pressure reaches the preset level, opening to the tank port and throttling flow to maintain regulated pressure. This model features a vent port for remote control by other pilot or two-way valves and a drain port that ensures insensitivity to back pressure. Known for its accuracy and low-pressure rise versus flow, the valve operates smoothly and quietly with moderate speed. It can handle maximum pressure at port 2 and is suitable for cross-port relief circuits, though spool leakage should be considered in such applications. The main stage orifice is protected by a 150-micron stainless steel screen; however, it is not suitable for load-holding applications due to potential leakage. Pressure at port 4 adds directly to the valve setting at a 1:1 ratio, with a maximum allowable pressure of 5000 psi (350 bar). Cartridges configured with EPDM seals are compatible with systems using phosphate ester fluids but may be damaged by petroleum-based substances. The RVEDLYN incorporates Sun's floating-style construction to minimize internal part binding from excessive installation torque or cavity machining variations. It fits into Cavity T-22A Series 2, has a capacity of 30 gpm (120 L/min), and features factory pressure settings established at 4 gpm (15 L/min). The valve's response time is typically around 10 ms, with maximum leakage at specified conditions being minimal. Adjustment requires up to five clockwise turns to increase settings, and various hex sizes are specified for installation and adjustment tools. The model weighs approximately .70 lb (.30 kg) and can be fitted with Viton seal kits if needed.