Sporlan Type 180

The Sporlan Type 180 Solenoid Pilot Control is a supplementary device for Sporlan thermostatic expansion valves, used in place of large-capacity liquid line solenoid valves for positive shut-off of liquid lines. The economics are the point: since only one size of Type 180 is required regardless of system tonnage, it costs less than a large line-size solenoid and is cheaper to install.

The Type 180 does not close the liquid line directly. Installed in the TEV's external equalizer line with a third 1/4" connection to the liquid line, it creates a pressure under the expansion valve diaphragm higher than bulb pressure — forcing the TEV itself closed. Two ports in the body (one high pressure, one low pressure) switch this pilot pressure. Because the TEV becomes the shut-off element, Sporlan requires Catch-All® filter-drier protection; a C-032-F Catch-All is included with the device.