Perfex Series 155 Magic Dial Thermostat
Here are photos of a circa-1944 Perfex Series 155 Magic Dial Thermostat, as well as the instruction manual.
Trane: The Complete Line
This document is called "Trane: The Complete Line, featuring the Trane Lifetime Valve" and contains information about Trane traps, vents and supply valves. Thanks to Patrick Linhardt for scanning and sharing this with us.
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