Check valve for fluids

Details Check valve for fluids Check valve for fluids

1990-06-18

1991-09-03

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Direct response valves

1375276, 1375278, F16K 1503

Patent

active

050443968

ABSTRACT:
Flapper valve apparatus includes a shell insertable into a line or conduit through which fluid flows. Within the shell is a configured valve seat, and the inner diameter of the valve seat is substantially the same as that of the line in which the valve apparatus is disposed. A flapper element pivots from its closed position against the seat to an open position within the shell, and in the open position the flapper generally conforms to the configuration of the line in which it is disposed for fluid flow purposes. The geometry of the valve apparatus minimizes the pressure drop across the valve and maximizes the flow characteristics of the fluid through the valve.

REFERENCES:
patent: 846317 (1907-03-01), Kiddle
patent: 4396034 (1983-08-01), Cherniak

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