Soft-start/dump valves are three-way, two-position solenoid valves that gradually increase air pressure downstream when energized (adjustable time). They maintain upstream pressure and can relieve downstream pressure when de-energized (optional dump function). NITRA soft-start valves can be used for shop/plant air supply or with air prep for individual machines.
The three-way, two-position (3 threaded ports) design is used to gradually increase air pressure downstream when the solenoid is energized and to shut off upstream pressure and relieve downstream pressure when it is de-energized.
Provided with a mounting bracket for stand-alone applications, the modular design also enables easy field assembly with NITRA pneumatic filters, regulators and lubricators (using modular assembly brackets purchased separately).
NITRA ASD Series Soft-Start Valves start at