Ball valve and seal

Details Ball valve and seal Ball valve and seal

1977-08-08

1979-11-27

Cline, William R.

Valves and valve actuation

Rotary valves

Ball valve

F16K 506

Patent

active

041757262

ABSTRACT:
A ball valve has a body with opposed coaxial inlet and outlet passages leading to and from a ball chamber containing an apertured ball which may be turned by a handle to open or close the way between the inlet and outlet passages, a pair of sealing rings at the inner ends of the inlet and outlet passages bearing against the ball, the inlet sealing ring being backed by a fixed annular flange, the outlet sealing ring being backed by an annular insert screwed into the inner end of the outlet passage to press the sealing rings firmly against the ball. The inlet and outlet passages have tapered threads, but the inner part of the outlet passage in which the insert is screwed has a cylindrical thread.

REFERENCES:
patent: 2855177 (1958-10-01), Freeman
patent: 3288430 (1966-11-01), Priese
patent: 3948480 (1976-04-01), Paptzun et al.
patent: 3970285 (1976-07-01), Lonn

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