. Reliable vacuum and vacu-vapor heating equipment . and consist of the following: Vacuum Pump including Base, Check Valves,Belt, Special Automatic Belt Tightener andGrease Cups. Electric Motor, either direct or alternating current. (Specify voltage if direct current motor is required, and voltageand cycles if alternating current. We furnish single phase alter-nating current motors only, as they operate on 2 or 3-phasecircuits, whereas 2 or 3-phase motors will not run on single phasecurrent.) Automatic Electric Switch and Vacuum Control-ler No. 1859. Strainer, (No. 2249 with No. 2779 Outfit, N
. Reliable vacuum and vacu-vapor heating equipment . and consist of the following: Vacuum Pump including Base, Check Valves,Belt, Special Automatic Belt Tightener andGrease Cups. Electric Motor, either direct or alternating current. (Specify voltage if direct current motor is required, and voltageand cycles if alternating current. We furnish single phase alter-nating current motors only, as they operate on 2 or 3-phasecircuits, whereas 2 or 3-phase motors will not run on single phasecurrent.) Automatic Electric Switch and Vacuum Control-ler No. 1859. Strainer, (No. 2249 with No. 2779 Outfit, with No. 122 and 123 Outfits, and with Outfits No. 124 and 125). Expansion Tank. Vacuum Gauge. Flanged Union Connections. Note: — Please bear in mind that our heating en-gineers are at your service, and are always willing to giveyou information; also to help you select RELIABLE Equip-ment that will give you the best and most economical service. Thirty-Eight VACUUM HEATING EQUIPMENT RELIABLE RETURN LINE ELECTRIC VACUUM PUMP No. 2779. See page 38 for list of equipment included urithjhis pump The No. 2779 RELIABLE Electric Vacuum Pump isa single-acting, plunger type pump of new design. Itoperates smoothly and evenly, without noise. The maxi-mum capacity is 2000 square feet of direct radiation. The illustration above shows the No. 2779 Pump hasno complicated parts to get out of order. See detailed description on next page Thirty-Nine THE RELIABLE RETURN LINE DETAILED DESCRIPTION OF No. 2779 RELIABLERETURN LINE ELECTRIC VACUUM PUMP Capacity, This pump will handle heating systems havingup to 2000 square feet of direct radiation. Electric Motor, either direct or alternating current, is ofstandard make—yi horse power. It starts easily underfull load, and will operate on a voltage variation of 10per cent. We furnish single phase alternating currentmotors only, as they operate on 2 or 3 - phase circuits,whereas 2 or 3-phase motors will not run on single phasecurrent. L
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