Heating valve

Details Heating valve Heating valve

1982-02-17

1984-10-30

Chambers, A. Michael

Fluid handling

Processes

Cleaning, repairing, or assembling

137315, 251214, 291571R, 29511, 29520, F16L 5518

Patent

active

044795050

ABSTRACT:
A heating valve is provided which comprises a valve body with a plurality of connecting branches, a valve seat disposed inside the valve body, a bonnet seated in a connecting branch opposite to the valve seat, a valve stem passing through the center of the bonnet, a valve plug disposed at the end of the valve stem, a tube having an inner annular bottom extension and an inner annular top extension, with the tube surrounding the stem and pressing with its bottom against a step of the bore of the bonnet, O-rings disposed against the top face and the bottom face of the tube, a stop-ring attached to the stem holding a compression spring against the bottom of the tube and a packing nut bolted into the bonnet, surrounding the stem and pressing against the O-rings for forming seals.

REFERENCES:
patent: 2015541 (1935-09-01), Weatherhead, Jr.
patent: 3297054 (1967-01-01), Nielson et al.
patent: 3490735 (1970-01-01), Nielson et al.
patent: 3772751 (1973-11-01), Lovett
patent: 4111392 (1978-09-01), Edelmunn
patent: 4135546 (1979-01-01), Morrison

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