Air conditioner refrigerant check guide

Measuring and testing – Fluid pressure gauge – Mounting and connection

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Details

731468, G01L 1700, G01L 1900

Patent

active

045999031

ABSTRACT:
A universal refrigerant system check gauge adapter in the form of an instrument of semi rigid yet flexible plastic having a bottom tube that is received in a valve head opening of a pressure gauge and about a valve pin within the valve head opening. The top end of the adapter has an opening shaped to fit on and over the low pressure suction side valve fitting of a refrigeration system. Internal projections within the bottom extended tube engage the end of the check gauge valve pin and a center projection within the adapter top end opening engages the valve stem of the refrigeration system suction side valve fitting so that as the check gauge is pushed toward the refrigeration valve fitting the refrigeration system valve is opened and refrigeration gases propelled from the refrigeration system enter the check gauge passing through the center opening of a resiliently compressible washer and through a port opening in the valve head. The end of the bottom tube compresses the resiliently compressible washer as the valve pin is brought into engagement with the ends of the internal projections thereby sealing the adapter to the check gauge and the adapter top end opening so fits the refrigeration system valve fitting that refrigerant materials leak very little if at all. The rectangular gauge indicator stem has at least one side that indicating pressure zones add: low, safe, high, and danger that are color coded as well. Other sides of the indicator stem are pressure numbered for use of the check gauge as a tire gauge without the adapter in place.

REFERENCES:
patent: 988917 (1911-04-01), Walker
patent: 2160414 (1939-05-01), Eksergian et al.

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