High pressure valve

Details High pressure valve High pressure valve

1973-11-05

1976-08-24

Cohan, Alan

Valves and valve actuation

Mechanical movement actuator

Screw

251214, F16K 3150

Patent

active

039762793

ABSTRACT:
A valve is disclosed that has an upper stem and a lower stem that are received in a gland and connected together by a threaded connection. The gland has an axial slot and the lower valve stem has a diametrically extending pin that extends into the slot so that when the upper stem is rotated, the lower stem moves axially into engagement with a valve seat thereby eliminating a rotation of the lower stem which insures against the stem rotating on the valve seat and prevents galling and reduces backlash between the upper stem and the lower stem to being almost non-existent without requiring periodic adjustment to compensate for wear.

REFERENCES:
patent: 2780233 (1957-02-01), Volpin
patent: 3007674 (1961-11-01), Lorenz et al.
patent: 3327992 (1967-06-01), Billeter
patent: 3409271 (1968-11-01), Kallenbach
patent: 3788600 (1974-01-01), Allen

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