Double check valve

The double check valve or locking block is in the consumer lines mutually operated check valve. Double check valves are usually used in conjunction with hydraulic linear actuators ( cylinders ). In the interconnection with directional valves and cylinders they are installed between the control valve and the cylinder. Since these valves are leak-free, they facilitate the holding of loads without drift. Application finds the twin check valve, for example, the hydraulic excavator.