Drip irrigation valve with spring biased plunger

Details Drip irrigation valve with spring biased plunger Drip irrigation valve with spring biased plunger

1975-10-17

1976-08-17

Cline, William R.

Fluid handling

Line condition change responsive valves

With separate connected fluid reactor surface

137517, 251205, 239109, 239542, F16K 3112

Patent

active

039748537

ABSTRACT:
A drip irrigation valve comprising an outer member having a passage, an inner member receivable in the passage, a groove in one of the members, and a seal carried by the other of the members. Water can be admitted through an inlet to the passage on one side of the seal to provide a fluid force on the inner member. The seal cooperates with the groove to define a restricted flow path. A spring urges the inner member in a direction to oppose the fluid force on the inner member. The groove is tapered or otherwise has regions of different cross sectional areas so that the flow rate through the restricted flow path can be established by the relative axial positions of the inner and outer members.

REFERENCES:
patent: 371063 (1887-10-01), Hays
patent: 2616445 (1952-11-01), Gaddoni
patent: 3200839 (1965-08-01), Gallagher
patent: 3487435 (1969-12-01), Sheardown
patent: 3685735 (1972-08-01), Foster
patent: 3702141 (1972-11-01), Wetterhorn
patent: 3735777 (1973-05-01), Katzer et al.
patent: 3908694 (1975-09-01), Spears

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