Model 52-21981-004 is a 3/2-way solenoid pneumatic valve manufactured by TDI, designed for on-off control of compressed air circuits on marine equipment and industrial machinery.This valve operates with a wide DC voltage range of 14 to 26 VDC, with coil power consumption ranging from 7.3W to 25W. It is strictly designated for intermittent duty cycle operation, suitable for short-cycle air control applications. Its applicable air pressure ranges from 20 PSI up to 150 PSI, covering most ship pneumatic control system pressure standards.The integrated aluminum alloy valve body features corrosion-resistant surface treatment, with standard 3-port layout (port 1 supply, port 2 output, port 3 exhaust). The sealed electromagnetic coil connector provides reliable waterproof and dustproof performance to adapt to marine engine room vibration, oil mist and humid environment. It is widely used as a pneumatic switching spare part for ship hatch cover actuators, valve remote control units and auxiliary machinery air control systems.
