F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
137/14
F16K 24/04 (2006.01) F24D 19/08 (2006.01)
Patent
CA 1186589
ABSTRACT A valve body or stopper, for screwing into a liquid- filled system, for example a hot water central heating system, is divided by a partition to from an inner chamber accommodating a spring loaded valve ball having a valve opening in the partition, and an outer chamber through the wall of which are a plurality of vent openings; a closure plug screws into the chamber and has a stern with stopper rings which swell upon taking up moisture and which register with the vent openings so as to close them if liquid penetrates the valve opening; to enable the system to be bled manually as desired, a spindle extends axially through the stern to protrude at one end from the plug, at the other end the spindle carries a pusher portion by which the valve ball can be unseated, this pusher portion having, at its end facing away from the valve ball, a closure surface which serves, when the valve ball is not being lifted, to seal the facing end of the channel, in the stem, through which the spindle extends.
420368
Lacrex Brevetti S.a.
Marcoux & Sher Swabey Mitchell Houle
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