SUN HYDRAULICS
RSBCLAV

***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 RSBCLAV (RSBCLAV) is a pilot-operated, balanced piston sequence valve designed to supply a secondary circuit with flow once the inlet port 1 pressure exceeds the set valve threshold. This valve's pressure setting controls the pressure at port 1 relative to the drain port 3, remaining unaffected by back pressure at port 2 up to the valve setting. It can substitute for two-port relief valves in systems with return line pressure. The RSBCLAV is part of a series of interchangeable three-port sequence cartridges that share flow paths and cavity designs for consistent performance across different frame sizes. Key features include a stainless steel screen protecting the main stage orifice, a minimum setting of 75 psi (5 bar), and an additive pressure capability at port 3 up to 5000 psi (350 bar). However, it's not suitable for load-holding applications due to spool leakage. The cartridge's EPDM seals are specifically for phosphate ester fluid systems, as petroleum-based fluids can damage them. The design incorporates Sun's floating style construction to prevent internal part binding from excessive installation torque or machining variations. With a capacity of 7.5 gpm (30 L/min) and established factory settings at 4 gpm (15 L/min), the valve operates under a maximum pressure of 5000 psi (350 bar) with typical response times around 10 ms and minimal leakage rates. Installation requires specific torques and hex sizes, ensuring secure and precise adjustments. The model weighs .30 lb (.15 kg) and comes with Viton seal kits available for maintenance needs.