F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
137/63
F16K 17/40 (2006.01) F16K 1/30 (2006.01) F17C 13/04 (2006.01)
Patent
CA 1222928
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.
488651
Britt Franklin J.
Macrae & Co.
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