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Handy man book plumbing and heating encyclopedia (1922)
Hardin-Lavin Co. · Hardin-Lavin Co. · leaf 186
L-720 Nickel Platedautomatic,brass groundseat air valvewith brass float. L-721 Wood Wheelnickel platedair valve withspout. L-722 Loose Key,nickel platedhot water airvalve wit hspout.Plumbing · Heating · Ventilation · And air-conditioning · Bathrooms -- trade · Lavatories and sinks · Bathtubs · Ceiling ventilators · Water heaters · Steam and condensate piping and pumps · HVAC ducts and casings · Air duct accessories
Internet Archive · Building Technology Heritage Library · Public Domain Mark 1.0. Free to use for anything.
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