Hydraulically unblockable non-return valve

Details Hydraulically unblockable non-return valve Hydraulically unblockable non-return valve

1983-12-16

1986-01-07

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Direct response valves

91 52, 13763015, 251 28, 251 33, 251 38, 251 634, 251 635, F16K 1518

Patent

active

045628629

ABSTRACT:
A hydraulically unblockable non-return valve has a control piston (21), the control side of which can be connected with a control pressure medium source (35) and the other side of which can be connected with a supply container (33). In order to create a hydraulically unblockable non-return valve, in which the control side of the control piston does not need to be relieved of pressure, the other side of the control piston is perpetually connected with the supply container. Also provided is a throttle bore (27) which connects the two sides of the control piston with each other.

REFERENCES:
patent: 1402016 (1922-01-01), Raymond
patent: 1690766 (1928-11-01), Astle
patent: 2677417 (1954-05-01), Logan
patent: 3631887 (1972-01-01), Schlechtriem
patent: 3631888 (1972-01-01), Anton

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