F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
137/37
F16K 17/10 (2006.01) F16K 31/145 (2006.01) F23N 5/10 (2006.01)
Patent
CA 1056257
Abstract of the Disclosure A combination gas valve in which means associated with the main dia- phragm valve is provided for opening the valve in a stepped manner. The combination valve includes an electromagnetic operator which controls the pressure differential across the main diaphragm valve so as to open and close it. The main valve seat surrounds a concentrically located recessed secondary valve seat. Slidably located on a stem extending from the main diaphragm valve, a secondary valve plate having a plurality of orifices therein is adapted to mate with the secondary valve seat so that initial open- ing of the main valve allows flow only through the orifices in the secondary valve and further opening of the main valve disengages the secondary valve from its seat, thus allowing full flow. On full flow conditions, a servo reg- ulator provides a regulated output.
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