Fluid handling – Line condition change responsive valves – Direct response valves
Patent
1989-05-11
1990-09-25
Hepperle, Stephen M.
Fluid handling
Line condition change responsive valves
Direct response valves
137517, 13754323, F16K 1730
Patent
active
049586572
ABSTRACT:
A safety flow limitor of modular construction for use in gas supply lines for passing a combustible natural gas from a source to a consumer comprises a cylindrical shell defining an internal passageway in which resides an axially movable valve head member having an annular surface for mating with an annular valve-seat provided along the passageway. A coil spring having its downstream portion retained in the passageway and its upstream portion abutting the valve head member serves to bias the annular surface of the valve head member away from the annular valve-seat so as to maintain the passageway open. If there is a pressure drop downstream, then the upstream pressure acts against the force of the coil spring and moves the valve head member to a downstream position where its annular surface mates with the annular valve-seat.
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UMAC Brochure entitled: Donkin Flow Limitors Offer Service . . . Savings, Copyright 1979, UMAC.
Quality Fittings, Inc., Brochure entitled: Style 100, Anodeless Meter Riser Design Construction, distributed by UMA, Inc., PA.
Hagan Thomas E.
McGowan, Sr. John B.
Hepperle Stephen M.
Umac Incorporated
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