Check valve

Details Check valve Check valve

1990-09-20

1991-11-19

Rivell, John

Fluid handling

Line condition change responsive valves

Direct response valves

137536, 137538, 137539, 13754319, F16K 2110

Patent

active

050657909

ABSTRACT:
A pneumatic check valve includes valve connections having a common axis of symmetry and a valve body at least partially guided in a droplet-shaped member disposed between the two connections to substantially eliminate flow and restriction losses occurring during operation.

REFERENCES:
patent: 1754975 (1930-04-01), Andersen
patent: 1796455 (1931-03-01), Gunn et al.
patent: 1901217 (1933-03-01), Yerkes et al.
patent: 2339101 (1944-01-01), Parker
patent: 2969085 (1961-01-01), Nystrom et al.
patent: 3356103 (1967-12-01), Biello et al.
patent: 3605802 (1971-09-01), Hertell
patent: 3787149 (1974-01-01), Dane et al.
patent: 4700741 (1987-10-01), Murphy

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