This pressure relief valve has a 1 1/4 inch NPTF female inlet, 1 1/2 inch NPTF female outlet, and pressure relief setpoint of 50 psi. The valve can be used for hot water space heating boiler applications to protect against excessive pressure. It features an iron body, non-metallic disc-to-metal seating, and test lever. Includes a nonrestrictive discharge drain line flood sensor with SentryPlus Alert(R) technology to detect excessive water discharges from the relief valve. When paired with an add on connection kit, the sensor is activated to relay alerts for potential flooding events. Connection kit options include BMS, cellular communication, and the Sensor Control Monitor which enables integration with BAS via RS‑485 Modbus or the Nexa platform through Wi-Fi. WATTS®, F383310, Valve, Series: 740, 1-1/4 x 1-1/2 in Nominal, Female NPTF End Style, 40 psi Pressure, 250 deg F, Media: Water, Iron Body, Non-Metallic Trim, 8-3/4 in H x 4-5/8 in L Dimensions, Domestic