Flow rate control valve

Details Flow rate control valve Flow rate control valve

1994-08-31

1995-08-08

Walton, George L.

Valves and valve actuation

With means for blocking or disabling actuator

Released by non-valving actuator motion

251104, 251229, 251276, 251331, F16K 3500, F16K 716

Patent

active

054391970

ABSTRACT:
In a flow rate control valve having a handle (12) for rotating a stem (9), the handle being locked to a bonnet (3) by a lock screw (14), the handle (12) comprises a handle main body (12') fixed to an upper end of the stem (9), and a tubular lock handle (12") coupled to the lower end of the handle main body (12'). The lock handle is movable in a direction orthogonal to an axial line of elongation Y of the stem 9 relative to the handle main body, with the lock handle enclosing the upper outer circumference of the bonnet (3), and the lock screw (14) being movable in the lock handle (12") in a direction nearly orthogonal to the axial line of elongation Y of the stem (9) to engage the bonnet (3).

REFERENCES:
patent: 3210040 (1965-10-01), Thurlow
patent: 3280836 (1966-10-01), Callahan, Jr. et al.
patent: 3622118 (1971-11-01), Schadler
patent: 3637188 (1972-01-01), Ung
patent: 3840041 (1974-10-01), McMurray
patent: 4471801 (1984-09-01), Lange
patent: 4620428 (1986-11-01), Kopesky
patent: 4687180 (1987-08-01), Simonelli et al.
patent: 5295660 (1994-03-01), Honma
patent: 5295662 (1994-03-01), Yamaji et al.

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