SUN HYDRAULICS
RVCALBE

***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 RVCALBE (RVCALBE) is a ventable, pilot-operated, balanced piston relief cartridge designed for precise pressure regulation. This normally closed valve opens to the tank port when inlet pressure reaches a specific setting, allowing for controlled flow and pressure management. It features a vent port that facilitates remote control through other pilot or two-way valves, enhancing its versatility. The RVCALBE is noted for its accuracy, smooth operation, low-pressure rise versus flow characteristics, and moderate speed. It accepts maximum pressure at port 2 and can function effectively in cross-port relief circuits; however, spool leakage should be considered in such applications. This model includes a 150-micron stainless steel screen protecting the main stage orifice and is not suitable for load-holding applications due to potential spool leakage. The valve's tank port back pressure directly adds to the setting at a 1:1 ratio. Configured with EPDM seals, it is compatible with phosphate ester fluid systems but should not be exposed to petroleum-based substances. The Sun floating style construction minimizes binding risks due to installation torque or machining variations. Key specifications include a capacity of 15 gpm (60 L/min), maximum operating pressure of 5000 psi (350 bar), and control pilot flow between 7-10 in\u00b3/min (0.11-0.16 L/min). It has a typical response time of 10 ms and maximum valve leakage at specified conditions of 2 in\u00b3/min (30 cc/min). Installation requires specific torque settings: valve installation torque is between 30-35 lbf ft (41-47 Nm), with adjustment screw internal hex size of 5/32 in (4 mm) and locknut hex size of 9/16 in (15 mm). The model weighs approximately .40 lb (.20 kg), with Viton seal kits available under part number 990011006.