Zero Pressure Start Direct-Acting NC Solenoid Valves

The electromagnetic force in a direct-acting solenoid valve acts directly on the valve core system. Its operation is entirely dependent on electromagnetic force and a return spring, making it unaffected by medium pressure differences and other similar factors, which results in high reliability.

Direct-acting normally closed solenoid valve is a type of valve that remains closed when the power supply is cut off and requires electricity to open.

Safety: In case of power failure or unintentional power cuts, the valve will automatically close, preventing the medium from flowing uncontrollably.
Immediate Closure: The solenoid valve is capable of closing immediately in the event of power loss or when there is a need to urgently stop the flow of the medium.
Simple and Reliable: With a simple structure, reliable operation, and easy maintenance, these valves are suitable for scenarios that require frequent opening and closing.

Specification
Structure
Working Principle
Video

Specification

Annotated diagram of a PU direct-acting normally closed solenoid valve

Table 1: PU Direct Acting Normally Closed Solenoid Valve
Item	Port	Pressure (kgf/cm²)	Body Material	Size A × B × C (mm)
SSV (S)PU-03	1/4"	0–10	Copper/SS	40 × 26 × 65
SSV (S)PU-10	3/8"	0–10	Copper/SS	65 × 47 × 93
SSV (S)PU-15	1/2"	0–10	Copper/SS	65 × 47 × 93
SSV (S)PU-20	3/4"	0–10	Copper/SS	72 × 45 × 100
SSV (S)PU-25	1"	0–10	Copper/SS	90 × 70 × 108
SSV (S)PU-35	1-1/4"	0–10	Copper/SS	120 × 90 × 131
SSV (S)PU-40	1-1/2"	0–10	Copper/SS	120 × 90 × 131
SSV (S)PU-50	2"	0–10	Copper/SS	150 × 112 × 146
Note: Seals can be made of NBR/EPDM/VITON material for on/off control of different fluids. Models with an (S) represents stainless steel material; those without are made of copper.