Price list J: material for mills, power plants and water works (1911)
George E. Gilchrist Co. · George E. Gilchrist Co. · leaf 18
4216x4$ 16 5( l 50: … The Norwall Siphon Air Valve WILL automatically vent any radiator which can bevented manually by a pet cock, of the last vestigeof air. Every section is rendered hot where the NorwallSiphon Air Valve is used. This operation is entirely automatic. The valve has noexpansion post, but depends upon…
Plumbing equipment and supplies · Plumbing Piping and Pumps · Domestic water piping · Plumbing equipment · Residential gas domestic water heaters · Residential faucets, supplies, and trim · Sanitary waste and vent piping
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