Constant quantity injection valve for liquefied carbon dioxide g

Details Constant quantity injection valve for liquefied carbon dioxide g Constant quantity injection valve for liquefied carbon dioxide g

1995-03-24

1997-07-29

Shaver, Kevin P.

Dispensing

Gas or vapor dispensing

222 5, 222 82, 2224022, B65D 8314

Patent

active

056514778

ABSTRACT:
The constant quantity injection valve (1) comprises a valve housing (2), a first and a second valve (3, 4) respectively including valve pins (8, 9) and ring-like packings (10, 11), and a measuring chamber (5) formed in the valve housing between the two valves. The valve housing has a gas blow-out passage extending along its axis. The individual valves are located on the upstream and downstream sides (7a, 7b) of the blow-out passage, and the valve pins are axially movable and respectively include closing sections (12, 13), opening sections (14, 15) and inclined sections (16, 17) connecting the two sections. The ring-like packings are made of an elastic material with a rubber hardness of 90.degree. or above, the three sections of each of the valve pins being detachably mounted on the peripheral wall of the blow-out passage. The two valves are in a position relation to each other such that with the closing of the first valve the second valve communicate the measuring chamber with the downstream side and with the opening of the first valve the second valve communicates the measuring chamber with the downstream side.

REFERENCES:
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patent: 3394851 (1968-07-01), Gorman
patent: 3605738 (1971-09-01), Ciranna
patent: 4220258 (1980-09-01), Gruenewald
patent: 4666062 (1987-05-01), Pershall
patent: 4811868 (1989-03-01), Nitta

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