Double-ended liquid line thermal insulator

Details Double-ended liquid line thermal insulator Double-ended liquid line thermal insulator

1984-07-11

1986-01-07

Cohan, Alan

Fluid handling

Line condition change responsive valves

Bi-directional flow valves

1375133, 251118, 138 32, F16K 1726, E03B 712

Patent

active

045628610

ABSTRACT:
Thermal conduction through a liquid line is deterred when liquid is not flowing through it by lodging a double-acting spring-centered plunger in a constricted section of a passage connecting opposite ends of a barrel in the line. Such plunger can be displaced from the passage constricted section in either direction to a passage expanded section automatically by pressure of liquid in the line resulting from opening a valve in the line.

REFERENCES:
patent: 2823695 (1958-02-01), Coffin
patent: 2915080 (1959-12-01), Holmes
patent: 2955613 (1960-10-01), Block
patent: 3437065 (1969-04-01), Robbins, Jr.
patent: 3556124 (1971-01-01), Walton
patent: 3730224 (1973-05-01), Prisk
patent: 4033375 (1977-07-01), Hirsch
patent: 4364411 (1982-12-01), Payton et al.
patent: 4432389 (1984-02-01), Jackson et al.

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