Pressure relief or back pressure valve

Details Pressure relief or back pressure valve Pressure relief or back pressure valve

1998-02-24

1999-08-31

Ferensic, Denise L.

Fluid handling

Line condition change responsive valves

With separate connected fluid reactor surface

13711527, 137557, 251331, 251 611, F16K 3112

Patent

active

059440503

ABSTRACT:
A pressure relief or back pressure valve has a valve body with a tubular outlet member having an outlet surrounded by an end face and an annular inlet chamber surrounding the outlet member. The annular inlet chamber has an outer periphery defined by a wall member with an end face in a plane spaced away from a plane defined by the end face of the outlet member. A flexible diaphragm has an outer peripheral edge portion clamped between the end face of the wall member and a clamping member, the flexible diaphragm in an undeflected configuration having a central portion spaced from the end surface of the outlet member. A resilient force applying device is operable to apply a predetermined force to the diaphragm to cause the diaphragm to be deflected into engagement with the end face of the outlet member, and a release device is operable to remove the force from the diaphragm to permit the diaphragm to move away from the end face of the outlet member.

REFERENCES:
patent: 3662779 (1972-05-01), Weber et al.
patent: 3727623 (1973-04-01), Robbins
patent: 4284039 (1981-08-01), Belicardi et al.
patent: 4555719 (1985-11-01), Arway et al.
patent: 4741360 (1988-05-01), Affeldt et al.
patent: 4744388 (1988-05-01), Ariizumi et al.

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