Most hot water heating systems, indoor or outdoor fired have a via leakes etc. This is done through a pressure reducing valve set at 15 psi.The system is protected by a relief valve set to open at 30 psi. The pressure will increase as the water is heated. Most systems use a glycol water mix to prevent freezing if theres a failure. The system needs to be isolated from your home water supply by a double check valve to prevent the glycol from getting into you household water if there is a pressure drop in the house.
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Today's Featured Article - The Niagra View Mobile - Powered by a 1959 Ford Tractor - by Mark Massey. In 1959 the Niagara Frontier Transit Inc. of Buffalo, New York designed and built six Viewmobiles for the Niagara Frontier Sightseeing Inc. for use as a sightseeing ride at the Niagara Falls State Park, Niagara Falls, New York, powered by a 1959 Ford 611 Tractor.
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