Fluid handling – Diverse fluid containing pressure systems – Fluid separating traps or vents
Patent
1999-01-25
2000-06-27
Hepperle, Stephen M.
Fluid handling
Diverse fluid containing pressure systems
Fluid separating traps or vents
251 3002, 251 46, 251 60, F16K 31126
Patent
active
060794372
ABSTRACT:
A diaphragm valve includes a valve housing, a diaphragm assembly mounted within the valve housing, a pilot valve coupled to the valve housing and a flow control stem mounted in an upper bonnet of the valve housing. The valve housing has an inlet passage and an outlet passage. The diaphragm assembly is vertically reciprocable back and forth within the valve housing to thereby connect and disconnect the inlet passage and the outlet passage. The valve housing has a lower inlet chamber below the diaphragm assembly, an upper pressure control chamber above the diaphragm assembly, and a bore in the bonnet which communicates with the upper pressure control chamber. The pilot valve is operatively associated with the upper pressure control chamber for selectively venting pressurized liquid therefrom. The diaphragm assembly normally seals the inlet passage from the outlet passage and is upwardly moveable to connect the inlet passage with the outlet passage upon release of a sufficient amount of pressurized water from the upper pressure control chamber via the pilot valve. The diaphragm assembly includes a mechanism for metering water from the lower inlet chamber through the diaphragm assembly into the upper pressure control chamber. The flow control stem is vertically reciprocable in the bore of the bonnet for selectively venting air trapped in the upper pressure control chamber.
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Beutler Matthew G.
Hunter Revis R.
Bastianelli John
Hepperle Stephen M.
Hunter Industries, Inc.
Jester Michael H.
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