SUN HYDRAULICS
RVEALSN

***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 RVEALSN (RVEALSN) is a ventable, pilot-operated, balanced piston relief cartridge designed for precise pressure regulation. This normally closed valve opens to tank port 2 when the inlet port 1 pressure reaches its set value, effectively throttling flow to maintain desired pressure levels. It features a vent port 3 for remote control via other pilot or two-way valves. This valve is known for its accuracy, low pressure rise against flow, smooth operation, quiet performance, and moderate speed. The RVEALSN accommodates maximum pressure at port 2 and is suitable for cross-port relief circuits, though spool leakage should be considered in these applications. It includes a main stage orifice shielded by a 150-micron stainless steel screen and is not recommended for load-holding applications due to potential spool leakage. The valve's backpressure at tank port 2 directly adds to the valve setting at a 1:1 ratio. Cartridges with EPDM seals are compatible with phosphate ester fluids but are vulnerable to damage from petroleum-based substances. Sun's floating style construction minimizes binding risks due to installation torque or machining variations. The RVEALSN fits into a T-2A cavity with Series 2 capacity of up to 30 gpm (120 L/min) and can handle pressures up to 5000 psi (350 bar). Control pilot flow ranges from 10-15 in\u00b3/min (0.16-0.25 L/min), with typical response times of around 10 ms and maximum leakage of approximately 3 in\u00b3/min at specific conditions. For adjustments, the valve requires about five clockwise turns to increase settings and comes with specific installation torque requirements: valve hex size of 1-1/8 inches (28.6 mm), installation torque between 45-50 lbf\u00b7ft (61-68 Nm), adjustment screw internal hex size of 5/32 inches (4 mm), locknut hex size of 9/16 inches (15 mm), and locknut torque between 80-90 lbf\u00b7in (9-10 Nm). The model weighs approximately .70 lb (.30 kg) and utilizes a Viton seal kit identified by part number 990202006.