3 pages matching check valve in this book
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2-inch pipe American Society Area of glass automatic boiler-room instruments brick British thermal units burning capacity cast-iron boilers check valve chimney coils combustion condensate efficiency equivalent glass exposure equivalent length farthest radiator feet Horse feet of 2-inch feet of glass feet of pipe fire-tube boiler flat-grate foot of grate fuel Gate valve glass surface Globe valve grate area gravity circulation gravity-return greenhouse heating hand-fired headers Heating and Ventilating horsepower hot-water heating system hot-water system initial pressure installed length of run linear feet low-pressure steam maintained in house mechanical stokers motor Oil burners operation perature pet cock pipe Feet pipe radiation pound per square pressure drop radiation lines return line return mains shown in Figure small greenhouses Society of Heating Sq.ft square foot steam system steam trap steam-heating system supply and return supply mains temperature thermostat tubes vacuum Ventilating Engineers water hammer water-tube boiler