This 3/4 in lead free boiler pressure relief valve is used in hot water heating and domestic supply boiler applications to protect against excessive pressures on all types of hot water heating supply boiler equipment. It consists of a lead free body construction with FNPT inlet and FNPT outlet (drain) connections, non-metallic disc-to-metal seating, stainless steel spring and test lever. It resists corrosive water conditions, sticking and freezing and prevents water and sediment from being trapped in the seat. It is designed for emergency safety relief, not as an operating control. The pressure setting is 40 psi, with corresponding ratings of 80,000 Btu/hr.
WATTS® Pressure Relief Valve, Automatic Reseating, Series: LF174A, 3/4 in Nominal, FNPT End Style, 250 deg F, Media: Water, Spring-Loaded Latch-Lock Handle Actuator, Cast Copper Silicon Alloy Body, 2-3/4 in L x 4-1/2 in H Dimensions
- Lead free body
- Soft seated
- Seat located above drain, water cannot be trapped and sediment cannot 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
- 80000 Btu/hr steam rating
- The wetted surface of this product contacted by consumable water contains less than one quarter of one percent (0.25%) of lead by weight
- 40 psi standard pressure settings