SUN HYDRAULICS
RVCALYE

***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 RVCALYE (RVCALYE) is a ventable, pilot-operated, balanced piston relief cartridge designed for precise pressure regulation. This valve remains normally closed and opens when the inlet port pressure reaches the set threshold, directing flow to the tank port to maintain desired pressure levels. It features a vent port that allows for remote control via other pilot or 2-way valves, ensuring flexibility in various applications. The RVCALYE is characterized by its accuracy, low pressure rise versus flow, smooth operation, and moderate response speed. Notably, it can handle maximum pressure at port 2 and is suitable for cross-port relief circuits; however, spool leakage should be considered in these scenarios. This model incorporates a main stage orifice protected by a 150-micron stainless steel screen but is not recommended for load-holding applications due to potential leakage. The back pressure on the tank port directly adds to the valve setting at a 1:1 ratio. For systems utilizing phosphate ester fluids, cartridges with EPDM seals are available; caution is advised as exposure to petroleum-based substances may damage these seals. The RVCALYE uses Sun's floating style construction to minimize binding risks from installation torque or machining variations. It fits into Cavity T-11A with a Series 1 capacity of up to 15 gpm (60 L/min) and operates at pressures up to 5000 psi (350 bar). Control pilot flow ranges from 7-10 in\u00b3/min (0.11-0.16 L/min), with typical response times around 10 ms. Maximum valve leakage stands at 2 in\u00b3/min (30 cc/min) under specified conditions. Adjustments are made via an internal hex screw and locknut system, with specific torque requirements for secure installation and operation stability.