Watts® 740 Pressure Relief Valve, 1 Inch FNPT, 30 psi, Media: Hot Water, Iron Body, Stainless Steel Spring, Metal Seat, Non-Metallic Disc, 250 deg F, 3-1/2 Inch L x 7-1/4 Inch H
- 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
- Steam discharge: 1300000 BtuH
Standard/Approvals: ASME Approved
Application: Hot Water Space Heating Boilers
