Mechanical
Purgers have been around since their invention and patent in 1940 by
Armstrong. They are designed to remove non-condensable gases from
refrigeration systems by the density difference between the liquid
refrigerant and gases. As the name implies, its operation is mechanical,
no automation, no electronic controls. This style of purger requires an
operator to open and close valves in order to start and stop the
purging operation in a refrigeration system. The mechanical purger has
been used successfully in many refrigeration systems and for many
refrigerants over the decades since its invention. Today, the mechanical
purger is used primarily in applications where there is no electricity
at the point of use or in hazardous applications where electric
components are not allowed. Mechanical purgers are available as a single
unit that must have the piping assembled at the point of use, or,as a
completely packaged unit that only need to be mounted and minimal
connections made. The standard mechanical purger is cast stainless
steel.
Armstrong also offers a retrofit package for existing, older
Armstrong systems. Consult the factory or your Armstrong Representative.
Product Literature
Installation and Maintenance