Fluid handling – Line condition change responsive valves – With separate connected fluid reactor surface
Patent
1987-03-04
1989-01-10
Schwadron, Martin P.
Fluid handling
Line condition change responsive valves
With separate connected fluid reactor surface
138 42, 138 45, 138 46, 239542, F16K 1732
Patent
active
047966602
ABSTRACT:
A flow-regulated drip emitter, including a housing provided with an inlet connector connectable into a relatively high-pressure liquid-line and an outlet opening, a flexible diaphragm retained along a peripheral portion thereof in the housing and dividing the interior of the housing into an inlet chamber and an outlet chamber, a flow-regulating valve comprised of a valve head accessible to the high pressure and a valve stem one end of which is attached to the valve head. The emitter further includes at least one flow-attenuating element disposed in the path of the liquid flowing from the inlet chamber into the outlet chamber, a valve seat associated with the valve head and located in a high-pressure region upstream of the inlet chamber, the valve seat and the valve head defining between them a gap through which the liquid passes on its way from the high-pressure line into the inlet chamber. The valve head is adapted to be acted upon by a first force tending to reduce the gap, and by a second force tending to increase the gap, a state of equilibrium between the forces defining the set point of the flow-regulated emitter.
REFERENCES:
patent: 2149673 (1939-03-01), Godfrey
patent: 4084749 (1978-04-01), Drori
patent: 4161291 (1979-07-01), Bentley
patent: 4241757 (1980-12-01), Bron
patent: 4428397 (1984-01-01), Bron
patent: 4513777 (1985-04-01), Wright
Hepperle Stephen M.
Manisa Establishment
Schwadron Martin P.
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