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Yarway-P-P000490

Yarway Blow-off Valves

Product Description

Designed for blow-off service in boiler systems with pressures of 3206 psig.

Features

  • Designed according ASME section 1, ASME B31.1, ASME B16.34.
  • For boiler systems up to 3206 psig.
  • Rugged construction to withstand high pressure and high velocities.
  • Excellent resistance to cleaning acids and wear caused by precipitated solids.Seatless valves
  • No Seat
    will not score or plug with dirt
    will not leak
  • Live
    loaded packing
    will not leak after packing
  • Slow opening
    will not rapidly drain boiler drum
    Unit tandem valves
  • Combination of hardseat and seatless valves in a single body
    eliminates pipe joints
    reduces potential leaks
    fits into a confined space
  • Stellite seat faces
    resists wear
    provides long service life

Specifications

Critical Service
Cavitation, Dirty Service, Flashing
Flow Characteristics
Special Characterization
Material
Carbon Steel, Cast Iron, Metal, Steel
Pressure Class
ASME
Shutoff Class
Class V (FCI 70-2)
Valve Size
NPS 2-1/2 / DN 65, NPS 2 / DN 50, NPS 1-1/4 / DN 32, NPS 1-1/2 / DN 40, NPS 1 / DN 25
Valve Size Standard
NPS
Valve Type
Globe, Angle
Certifications
ASME B31.1
End Connection
Socket Weld, Flanged

Documents & Drawings