Control valve having closely sealing effect

Details Control valve having closely sealing effect Control valve having closely sealing effect

2006-06-27

2006-06-27

Jacyna, J. Casimer (Department: 3751)

Valves and valve actuation

Rotary valves

Plug

C251S312000

Reexamination Certificate

active

07066445

ABSTRACT:
A control valve includes a valve seat, a control switch, and at least one leakproof ring. Thus, when the control valve is disposed at a closed state, the water inlet or the water outlet of the valve seat is stopped by the leakproof groove of the control switch and is sealed closely by the leakproof ring, thereby enhancing the leakproof effect of the control valve.

REFERENCES:
patent: 2244237 (1941-06-01), Belknap
patent: 2497448 (1950-02-01), Grosboll
patent: 3133723 (1964-05-01), Goldman et al.
patent: 3343802 (1967-09-01), Schuilwerve

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