Reliable vacuum and vacu-vapor heating equipment (1915)
The Bishop-Babcock-Becker Co. · The Bishop-Babcock-Becker Co. · leaf 54
wheel-handle) The Vacu-Graduate Packless Valve with wheel-handle is a new quick opening radiator supplyvalve, designed particularly for use on bottomfeed radiators or coils. It is fully opened or closedby a quarter turn of the wheel-handle. A sectional illustration of the Vacu-GraduateValve is…
Heating units · Vacuum-tube collectors · HVAC ducts and casings
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