Counter Balance Valve – CBS

Polyhydron Counter Balance Valves (CB series) are direct-acting, seat-type valves used in hydraulic systems to control the descent of overrunning or gravity-induced loads. They prevent runaway loads and ensure smooth movement by creating backpressure in the return line.

  • Check Mark Operating Pressure : High Performance Range
  • Check Mark Application : Industrial & Mobile Systems

About this item

The Polyhydron Counter Balance Valve – CB is a seat-type valve designed to provide controlled load holding in hydraulic systems. It allows free flow from port B to port A while ensuring leak-free closure in the reverse direction up to a predetermined pressure. This cracking pressure is adjustable within the specified range, enabling precise control and safe operation.

CBS10T CBS20T
Flow handling capacity 30 lpm 115 lpm
Operational Features
  • Flow Direction: These valves allow free flow from Port B to Port A via an internal check valve.
  • Leak-Free Closure: They provide a leak-free seal from Port A to Port B until the pressure exceeds a predetermined cracking pressure.
  • Adjustable Setting: The cracking pressure can be adjusted within its specified range using an adjustment screw (typically counter-clockwise to increase pressure).
  • Pilot Unloading: Some models, like the CB Series Design 30, include a pilot port (Port X) to allow for external pilot signals to open the valve.

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