Safety valve

Details Safety valve Safety valve

1977-12-13

1981-01-20

Cline, William R.

Fluid handling

Line condition change responsive valves

Bi-directional flow valves

1374545, 137540, 13754313, F16K 1718, F16K 1506

Patent

active

042456673

ABSTRACT:
A safety valve has a housing with an inlet, outlet and a threaded opening carrying a walled unit which is sealingly removable from the housing; the portion of the unit extending into the housing is apertured to permit flow and has a valve seat and co-operating plate to which is attached a valve stem extending through an annular diaphragm in secured relationship. The diaphragm is supported by the housing and in the portion of the unit exterior of the housing is a biasing device which acts on the diaphragm.

REFERENCES:
patent: 2279002 (1942-04-01), MacNeil
patent: 2603231 (1952-07-01), Birkhemeier
patent: 2859767 (1958-11-01), Tschudi et al.
patent: 3422840 (1969-01-01), Bryant et al.
patent: 3545476 (1970-12-01), Dykzeul et al.
patent: 3789870 (1974-02-01), Keller
patent: 3797511 (1974-03-01), Selby
patent: 3825225 (1974-07-01), Demi
patent: 3835646 (1974-09-01), Ranft et al.

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