GB260753A - A new or improved hot water supply system - Google Patents

Abstract

260,753. Marsh, R. G. Oct. 16, 1925. Water supply and delivery; safety - arrangements. - For supplying water that will boil on issuing from the delivery cock j a boiler a is connected to an overhead tank c and is maintained at such a temperature above boiling point that the pressure prevents the formation of steam. The delivery cocks are arranged upon standards or fountains e connected with the boiler by flow and return pipes d, g. An automatic air release valve is provided on each standard. The temperature is normally maintained thermostatically but if an abnormal increase in pressure occurs the control is cut out and the gas is shut off. This may be effected by the rise in water level in the tank c consequent on the formation of steam. As shown in Figs. 1 and 4 water overflowing the weir v passes down the pipe u and, striking against a plate t in a casing s, turns off the gas cock, the spindle r<1> of which is connected to the plate t. In the example shown in Fig. 5 overflowing water fills the chamber w and then siphons down the pipe x to cut off the gas supply passing through a closed chamber y. In Fig. 6 a siphon in the tank c operates to cause water passing down the pipe 1 to press a diaphragm 5 against the end of the gas supply pipe 6.