Inspection port

摘要

A manifold gauge set has at least one sight glass window for viewing contents of a refrigeration system or an air conditioning system being serviced. The window may be non-planar to achieve an appearance that varies with the presence or absence of liquid. Such a non-planar window may be in the form of a dome, prism or a fresnel lens. The gauge set may have a second light transmissive window to allow light to illuminate system contents being viewed. A light source may be provided to illuminate system contents being viewed. The light source may provide light through the same window that is used for viewing contents. A diffuser may be provided with a second window to achieve an illuminated background for viewing system contents. Similar configurations may be used in standalone sight glasses, vacuum pumps, and recovery machines.

主权项

1. A manifold gauge set for use in servicing a refrigeration system, the manifold gauge set comprising:
a) a body having a cavity, b) at least three hose connection ports, each port in fluid communication with the cavity, and at least two valves for controlling fluid communication between the ports and the cavity, c) two pressure gauges, one gauge associated with one of the hose connection ports and another gauge associated with another one of the hose connection ports, the gauge for reading and displaying the pressure at its associated hose connection port, and d) a liquid presence indicator for indicating the presence of liquid in the cavity.