Vacuum valve-sensor device

Fluid handling – Line condition change responsive valves – Direct response valves

Patent

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Details

137557, 137884, 137536, 417 44, 417187, F16K 2700, F16K 1502

Patent

active

046870210

ABSTRACT:
A vacuum valve-sensor device mounted on a vacuum source and maintaining the vacuum generated by the vacuum source to a required level. It includes a one-way valve which allows gas to flow towards the vacuum source but not away therefrom, and a pressure sensor on the side of the one-way valve remote from the vacuum source. The one-way valve includes a valve seat through which flow of gas is directed and a valve element biased toward seating on the valve seat from the side of the vacuum source. The pressure sensor may be located on the side of the valve seat remote from the valve element thereof, and may include a V-ring seal member fitted on the valve element.

REFERENCES:
patent: 2047654 (1936-07-01), Te Pas
patent: 2682886 (1954-07-01), Paxton
patent: 3435841 (1969-04-01), Williams et al.
patent: 3599639 (1971-08-01), Spotz
patent: 4432701 (1984-02-01), Ise
patent: 4549854 (1985-10-01), Yamamoto

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