Control valve

Details Control valve Control valve

1986-01-08

1987-05-19

Schwadron, Martin P.

Valves and valve actuation

Balanced valves

Reciprocating

251333, F16K 3902

Patent

active

046661263

ABSTRACT:
A control valve in which a surface of a valve seat closer to a valve body is formed so as to be flat. A valve head corresponding to an annularly formed fluid-communication passage is provided with an annular inner convex projection and an annular outer convex projection. These projections engage with the flat surface of the valve seat on the inner side and the outer side of the fluid-communicating passage, respectively. The valve head is provided with a communicating passage for providing communication between a valve body-driving portion side thereof and a valve seat surface side containing the inner convex projection.

REFERENCES:
patent: 158296 (1874-12-01), Matlock
patent: 2253460 (1941-08-01), Hempel
patent: 3099432 (1963-07-01), Zeitlin
patent: 3207171 (1965-09-01), Kryman
patent: 3892384 (1975-07-01), Myers
patent: 4477056 (1984-10-01), Alexius
patent: 4500070 (1985-02-01), Riollet et al.

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