Reliable vacuum and vacu-vapor heating equipment (1915)
The Bishop-Babcock-Becker Co. · The Bishop-Babcock-Becker Co. · leaf 77
DRY RETURN NTENDED FOR A WORKING PLAN Seventy- Three RELIABLE VACU-VAPOR … THE VACU-CHECK The Vacu-Check is a combined check valveand thermostatic valve which automaticallyliberates air, and prevents escape of hot vaporor steam. One Vacu-Check is installed on end of eachsteam supply main or circuit. It is vented throughthe 4 V Vacu-Vapor Vent Valve. See diagramon page 76.…
Heating units · Vacuum-tube collectors · HVAC ducts and casings
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