Gravitational irrigation system and method of installing

Valves and valve actuation – Rotary valves – Ball valve

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Details

61105, 251145, 285200, E02B 1300

Patent

active

040006204

ABSTRACT:
A gravitational irrigation system is disclosed which uses preformed, water-impervious, flexible, collapsible, plastic tubing as a replacement for an open ditch. The tubing is laid in a shallow trench along the area to be irrigated and held in place by mounds of soil thrown on the top thereof. Annular apertures are cut in the tubing at intervals where exit of water is desired. Flexible, annular, open-ended spigots having a flanged end of greater diameter than the diameter of the body of the spigot are inserted, flange end first, into the apertures to form a laterally extending spigot from the tubing. The body of the spigot has an outer diameter approximating the diameter of the cut in the tubing. The flange of the spigot substantially seals against water leakage between the tubing and the flange of the spigot. Each spigot includes a raised annular ridge extending around the outer circumference of the body thereof which mates with a corresponding raised annular ridge extending around the internal circumference of a matching closed-end cap, the cap sealing the opening in the spigots.

REFERENCES:
patent: 1143351 (1915-06-01), Benson
patent: 2387539 (1945-10-01), Spanel
patent: 2763991 (1956-09-01), Kennon
patent: 2777490 (1957-01-01), Munk
patent: 3128900 (1964-04-01), Chaboche
patent: 3490791 (1970-01-01), Mitchel
patent: 3814377 (1974-06-01), Todd
Popular Mechanics, Feb. 1957, p. 287, 61-12.

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