Low leakage solenoid valve

Details Low leakage solenoid valve Low leakage solenoid valve

1986-02-14

1987-05-19

Rosenthal, Arnold

Valves and valve actuation

Electrically actuated valve

Including solenoid

25112915, 251362, 251358, F16K 3106, F16K 142

Patent

active

046661255

ABSTRACT:
A normally closed high pressure solenoid valve structure including a plunger pin spring-urged against a composite valve seat having a steel reinforcing ring positioned against the seat and backed up by a fixed spacer. The seat has a projecting neck with orifice. The steel reinforcing ring surrounds and contains any radial movement of the seat which is of elastic material softer than the plunger pin which provides a very low leakage level across the valve from either direction. A lost-motion connection between the plunger pin and the solenoid armature provides that the spring load on the plunger pin is retained even with cold flow of the seating material during cycling.

REFERENCES:
patent: 3107893 (1963-10-01), Bashe
patent: 3510103 (1970-05-01), Carsello

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