Needle valve with deformable seal

Details Needle valve with deformable seal Needle valve with deformable seal

1993-12-03

1994-12-06

Rosenthal, Arnold

Valves and valve actuation

With material guide or restrictor

Movable or resilient guide or restrictor

251332, 251903, F16K 138, F16K 4704

Patent

active

053703570

ABSTRACT:
A needle valve including a deformable seal positioned between the distal end of the needle and a hard, mechanical seat between the needle and the valve housing. The deformable seal is able to seal around the movable needle but is protected from serious deformation by the hard mechanical seat that is located so as to prevent the needle from entering the deformable seat beyond a predetermined amount. Thus the deformable seal does not extrude due to the entrance of the needle and wear is reduced.

REFERENCES:
patent: 2917271 (1959-12-01), Banks
patent: 3071344 (1963-01-01), Banks
patent: 3272218 (1966-09-01), Johnson
patent: 3327991 (1967-06-01), Wallace

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