National boilers, radiators, and specialties: catalog no26 . ce, each $1 QQ The No. 2 Hoffman Siphon Air and Vacuum Valve is absolutely auto-matic and requires no adjustment at any time. It is air, steam and watertight and functions price, each. ^ 5Q The No. 3 Hoffman Air Line Valve is for drip orvacuum. It vents the last vestige of air but automatic-ally closes against price, each $2 50 The No. 4 Hoffman Junior Quick Vent Air Valve isautomatic and non-adjustable. It is a dependable valveand keeps mains and risers free from air. It does notclose against pri
National boilers, radiators, and specialties: catalog no26 . ce, each $1 QQ The No. 2 Hoffman Siphon Air and Vacuum Valve is absolutely auto-matic and requires no adjustment at any time. It is air, steam and watertight and functions price, each. ^ 5Q The No. 3 Hoffman Air Line Valve is for drip orvacuum. It vents the last vestige of air but automatic-ally closes against price, each $2 50 The No. 4 Hoffman Junior Quick Vent Air Valve isautomatic and non-adjustable. It is a dependable valveand keeps mains and risers free from air. It does notclose against price, each . $2 80 The No. 5 Hoffman Quick Vent Float Air Valve is a perfect venting devicefor blast coils or vent stacks. It is open for air passage but closed tight againststeam or price, each $8_0Q The No. 6 Hoffman Quick Vent Float Air and VacuumValve is intended for quick vent vacuum service. It is avent valve which positively closes against steam and waterand the return of air. It is designed for vapor, modulating and gravity vacuum
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License: Licensed
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectsteambo, bookyear1920
