Three way butterfly valve

Details Three way butterfly valve Three way butterfly valve

1979-11-23

1981-08-04

Tapolcai, Jr., William E.

Fluid handling

Systems

With flow control means for branched passages

13762546, 137876, F16K 500

Patent

active

042816866

ABSTRACT:
A motor means controlled three way butterfly valve is disclosed for regulating the flow of liquids, as in internal combustion engine cooling system and passenger compartment heating and air conditioning systems. The valve plate includes two flat parallel surfaces which engage two corresponding flat parallel surfaces formed on the cylindrical passage in the valve body to reduce valve plate binding or sticking against the inner surface of the flow passage when the valve plate is rotated.

REFERENCES:
patent: 929944 (1909-08-01), Hawley et al.
patent: 2395997 (1946-03-01), Eckel
patent: 3228653 (1966-01-01), Trimmer
patent: 3373771 (1968-03-01), Boyen
patent: 3888458 (1975-06-01), Bubniak et al.
patent: 3966119 (1976-06-01), Harter et al.
patent: 3995446 (1976-12-01), Eubank
patent: 4156439 (1979-05-01), Jeffries et al.

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