Watts® 0383020 Pressure Relief Valve, 1-1/4 in

Seat located above drain; water can't be trapped and sediment can't foul seat Non-mechanical seat-to-disc alignment will not stick or freeze Water seal of high temperature resisting material isolates spring working parts from water during relief Nonmetallic disc-to-metal seating The discharge line must be the same size as the valve outlet, and must pitch downward from the valve to a safe place for disposal Valve lever must be tripped at least once a year to ensure that waterways are clear, This device is designed for emergency safety relief and shall not be used as an operating control