Cartridge valve CP448-1

for cylindersactuator3-way

This 3-ported, externally piloted counterbalance valve is 8-size, cartridge style, low leakage with hydraulic vent. The check section allows free flow from the directional valve (port 2) to the load (port 1), while normally blocking flow from port 1 to port 2. Reverse flow is blocked until pilot pressure is applied at port 3. When the load pressure at port 1 rises above the pressure setting, the relief valve is activated and pressure is relieved from port 1 to port 2. Applications Single counterbalance valves are normally used when the load is unidirectional, such as aerial lifts, cranes, or winches. In load holding applications, they can be used as hose-break valves when installed close to or in an actuator. Dual valves can be used for controlling loads bi-directionally in motor applications, or for cylinders going over center.