Balance valve

About

Precision Balance Valves for Hydraulic Systems Balance valves — also known as counterbalance valves or load-holding valves — are critical safety and control components in hydraulic circuits. They maintain a set back-pressure on the outlet side of a hydraulic actuator, preventing uncontrolled load drop, cavitation, and runaway motion under negative or suspended loads. Key Functions Load holding: Locks actuator position when the circuit is at rest, preventing drift caused by internal leakage or gravity. Controlled lowering: Meters flow out of the actuator in proportion to pilot pressure, ensuring smooth, predictable descent of suspended loads. Cavitation prevention: Maintains positive back-pressure to eliminate vacuum conditions on the low-pressure side of cylinders and motors. Overload protection: Acts as a relief valve when system pressure exceeds the set threshold, protecting cylinders, motors, and structural components. Common Applications Crane and lifting equipment (boom, jib, and winch circuits) Excavator arm and bucket circuits Aerial work platforms and telehandlers Forestry and agricultural machinery Marine and offshore hydraulic systems Industrial press and clamping circuits Selection Criteria Choosing the correct balance valve requires matching the set pressure (typically 1.3× maximum load-induced pressure), pilot ratio , flow rating , and port configuration (inline, cartridge, or manifold-mount) to your specific circuit requirements. Cross-reference OEM part numbers or consult our fitment data to ensure compatibility with your machine make, model, and hydraulic circuit design. All balance valves in this collection are sourced to OEM specifications and are suitable for direct replacement in mobile and industrial hydraulic systems.