Combination excess flow and disconnect shutoff valve fitting

Details Combination excess flow and disconnect shutoff valve fitting Combination excess flow and disconnect shutoff valve fitting

F - Mech Eng,Light,Heat,Weapons

16

K

284/2, 137/34

F16K 15/06 (2006.01) F16K 17/20 (2006.01) F16L 41/04 (2006.01)

Patent

CA 1066987

Abstract of the Disclosure A valve fitting insertable in a gas service pipe coupling for operably effecting gas flow interruption in response to either an encountered excess flow or in the event of a piping disconnect from the coupling. A tubular, stepped diameter valve body is sized for receipt within a pipe coupling to define an annular flow passage internally forming an annular seat at an intermediate location within the passage. A more or less T-shaped poppet having a scalloped faced hex head is spring biased in opposition to the gas flow and cooperates with the body seat to interrupt flow in response to an increasing Plow pressure being exerted against the head. A pullout plate en- circling the poppet shank is biased toward seating the poppet against the body seat for separately arresting gas flow there- past but is prevented from doing so when a pipe section is positioned in place within the coupling.

269424

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