Pilot valve-type evaporating pressure-regulating valve used in r

Details Pilot valve-type evaporating pressure-regulating valve used in r Pilot valve-type evaporating pressure-regulating valve used in r

1977-03-08

1978-09-12

Wayner, William E.

Refrigeration

Automatic control

Refrigeration producer

137491, F25B 4104, F16K 1726

Patent

active

041127048

ABSTRACT:
A pilot valve-type evaporating pressure-regulating valve used in refrigerators comprising a valve sleeve having an outer and an inner chamber, a piston valve member sliding in said inner chamber and having an equalizing hole connecting the interior of the piston and the inner chamber, a pilot valve having a pilot chamber provided in the end wall of the valve sleeve and covered with a diaphragm, a pilot passage formed in said end wall to connect said pilot chamber with said inner and outer chambers, and a ball valve member kept in connection with said diaphragm and normally closing and opening said pilot passage in response to the pressure in said inner chamber by movement of said diaphragm. The diaphragm is moved by the pressure-set force of a spring which is, however, variable and adjustable from the outside by rotation of a screw.

REFERENCES:
patent: 2044452 (1936-06-01), Terry
patent: 2333522 (1943-11-01), Clifton
patent: 2966044 (1960-12-01), Mitchell
patent: 3064447 (1962-11-01), Heidorn

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