Steam “Safety” or Hot Water “Relief” Valve - ….pdf

9-6-2005 Steam “Safety” or Hot Water “Relief” Valve INSTALLATION REQUIR EMENTS FOR BOILERS Safety or relief valves shall be installed at the top of the boiler with the spindle of the valve in an upright vertical position. The inle t and discharge piping shall be as short and direct as possible. Safety and relief valve set pressure and capacity are determined by data from the manufacturer’s name plate or stamping on the boiler. * Safety & relief valve inlet and inlet piping shall be equal in diameter * Safety & relief valve inlet and inlet piping diameters shall be equal or smaller than the opening or port to which it is attached on the boiler Safety or relief valves shall be installed in an upright vertical position as shown Distance from floor or air gap no greater than 6 inches * Discharge piping shall not restrict the flow from the safety or relief valve * Discharge piping diameter shall be the same size or larger than