Reversible expansion valve

Details Reversible expansion valve Reversible expansion valve

1981-04-22

1983-02-08

Tapolcai, William E.

Automatic temperature and humidity regulation

Thermostatic

With pressure control

62225, 1375133, F25B 4104

Patent

active

043724868

ABSTRACT:
An electrically operated reversible expansion valve. It has a valve body formed with a primary port, a secondary port, a valve seat defined between the primary and secondary ports, and a slide bore in an opposing relation to said valve seat. A valve needle is supported by the slide bore. In order to prevent the fluid from being admitted into a bimetal chamber through the slide bore, a bypass is provided between the primary port and the slide bore.

REFERENCES:
patent: 706573 (1902-08-01), Lindsay
patent: 3205675 (1965-09-01), Matthies
patent: 3874409 (1975-04-01), Lee
patent: 4003401 (1977-01-01), Haring
patent: 4071038 (1978-01-01), Robinson
patent: 4236381 (1980-12-01), Imral et al.
patent: 4296221 (1981-10-01), Steele, Jr.
patent: 4308723 (1982-01-01), Ecker

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