Fluid handling – Line condition change responsive valves – Direct response valves
Patent
1994-09-30
1996-01-30
Rivell, John
Fluid handling
Line condition change responsive valves
Direct response valves
137517, 137217, 137557, 137847, 68208, 239289, F16K 1514, F16K 3700, D06F 3908
Patent
active
054874068
ABSTRACT:
A valve for permitting fluid flow in a first desired direction and preventing fluid flow in a reverse direction. The valve includes a valve body having a rigid wall defining inlet and outlet openings at opposite ends thereof and a main flow passageway between the inlet and outlet openings. Secured to the rigid wall, so as to receive fluid entering the passageway through the inlet opening, is a tubular valve member of elastomeric material having upstream and downstream ends in fluid communication with one another. The tubular valve member is normally open to fluid flow but is yieldingly collapsible in response to downstream pressure increases to prevent fluid from passing therethrough. A ring is secured about the tubular valve member and is dimensioned to prevent the passage of the downstream end through the inlet opening in the event of a downstream pressure increase. The drain control valve may be employed in conjunction with a novel manifold for irrigation purposes.
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Greiner Stephen R.
Rivell John
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