National boilers, radiators, and specialties: catalog no26 . Automatic airvalves are indispen-sable factors in aheating plant andplay such an im-portant part thatthe use of cheaplymade air valves area serious menace tothe steam fitter aswell as to the owner. Solus Perfect Valve sideraS ^^^^^^l^^U^^ ™ *?&. • ***** con-air valve at a reasonable price P y°U that there can be ha^ * reliable l^l^t^^^t^^J^^^^^^^ construction ofto get out of order. perishable or intricate parts No automatic airvalve now on themarket has given asgood results undercontinuous usage. It is manufac-tured from an ex-cellen

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National boilers, radiators, and specialties: catalog no26 . Automatic airvalves are indispen-sable factors in aheating plant andplay such an im-portant part thatthe use of cheaplymade air valves area serious menace tothe steam fitter aswell as to the owner. Solus Perfect Valve sideraS ^^^^^^l^^U^^ ™ *?&. • ***** con-air valve at a reasonable price P y°U that there can be ha^ * reliable l^l^t^^^t^^J^^^^^^^ construction ofto get out of order. perishable or intricate parts No automatic airvalve now on themarket has given asgood results undercontinuous usage. It is manufac-tured from an ex-cellent quality ofsteam metal and allparts finished on alathe to insure cleanwaterways. Inside ViewWith Vacuum Attachment A *•*: ThesevaIvesare guaranteed for five years ^^^SS^^^^y^\S^^J^ *«*** -ite us Solus Perfect Automatic Air Valve! Lprice each necessa^< Solus Perfect Automatic Air and Vkcuun? Vah^flist price each. V. \\ [ $\^.

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Keywords: ., bookcentury1900, bookdecade1920, booksubjectsteambo, bookyear1920