Fluid handling – Destructible or deformable element controlled – Destructible element
Patent
1984-08-20
1986-01-07
Walton, George L.
Fluid handling
Destructible or deformable element controlled
Destructible element
1373293, 1376142, 137901, 222 3, 222545, F16K 1740, F16K 4300
Patent
active
045628521
ABSTRACT:
A combination safety and service valve including a body having a sealing portion for closing an opening in a high-pressure tank and an external portion which, when the sealing portion closes the tank opening, is positioned externally of the tank utilizes a ball chamber in its flow passage and a spherical ball loosely received in the chamber for preventing the escape of contents of the tank if the external portion were to separate from the sealing portion. The ball chamber is adapted to sealingly accept the ball at its outlet end, and the ball is of such size that a pressure differential across the ball chamber urges the ball into sealing engagement with the ball chamber outlet. A stem associated with the external portion of the valve body prevents the ball from engaging the chamber outlet end until the external portion is separated from the sealing portion.
REFERENCES:
patent: 2391017 (1945-12-01), Grontkowski
patent: 2945503 (1960-07-01), Atkinson
patent: 3618626 (1971-11-01), Russo
patent: 3645286 (1972-02-01), Follett
patent: 4077422 (1978-03-01), Brinkley
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