1CE30 Series Counterbalance Cartridge Valve, 1740-5075 PSI (Factory Setting At 3045.00), Screw with Locknut Adjustment, 2.5:1 Pilot Ratio

Built for load control, the 1CE30 counterbalance (overcenter) cartridge regulates flow into and out of an actuator so a moving load does not outrun the pump flow. When it is installed close to or within the actuator, it can stop runaway in a hose burst situation and provide load holding, with a free flow check for flow going into the actuator.

The 2.5:1 pilot ratio is actually the right call for exactly that kind of application. Long booms and flexible frameworks tend to be unstable by nature, and a lower pilot ratio like 2.5:1 keeps the valve from opening too aggressively when pilot pressure is applied. The higher ratios, like 5:1 or 10:1, are better when the load is more predictable or constant. For anything with flex or bounce in the structure, 2.5:1 gives you the tightest control over how that load moves.