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United Brass 425 - 1-1/4" NPT Quick Open Blowdown Valve

$537.54
SKU: 425 1 1/4
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More about this product

The 425 is a quick opening boiler blow off valve has been designed for the rugged service of boiler treatment and scale. The cast steel knife gate valve conforms to Class 300 of ANSI B16.34 and features a stainless steel seat and disc hardened to Rockwell 60. ASME Boiler and Pressure Vessel Code Section 1 PG42.1.12 and Power Piping Code ASME B 31.1 Table 126.1 reference steel valves to ANSI B 16.34. The sliding disc provides a “cleaning” action that keeps the seating area clear of scale and debris.

Details:

  • 300 class
  • 1-1/4" inlet and outlet
  • 650 WSP @ 500° F
  • 750 PSI @ 100° F
  • Maximum boiler blow-off pressure: 480 PSI
  • 100% Pressure Tested
  • Threaded Ends
  • High tempature powder coating for corrosion resistance

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