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A vacuum breaker is a device that prevents water from being siphoned backward in a direction it is not desired to go. They are commonly placed on a bibcock valve or toilet or urinal flush valve, in which application they can prevent hose or drainage water from back-siphoning into the public drinking water system.
Shafer Valve Company is a Mansfield, Ohio-based manufacturer and distributor of piping products, specialising in the gas pipeline and water pumping industries. It is fully owned by Emerson Process Management Valve Automation, Inc. , based in St. Louis, Missouri .
Turning a valve knob or lever adjusts flow by varying the aperture of the control device in the valve assembly. The result when opened in any degree is a choked flow . Its rate is independent of the viscosity or temperature of the fluid or gas in the pipe, and depends only weakly on the supply pressure , so that flow rate is stable at a given ...
In October 1993, toilet fixture manufacturers reported rapid degradation of flush valve flappers; some new, water-saving toilets (introduced to meet a 1994 US federal water conservation deadline [10]) were leaking within months of installation. The growing popularity of in-tank drop-in cleaning tablets quickly drew suspicion as many contain ...
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Plumbing installation and repair work on residences and other buildings generally must be done according to plumbing and building codes to protect the inhabitants of the buildings and to ensure safe, quality construction to future buyers.
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