Sempell Dewrance Model B21/B51 backventil

Sempell Dewrance Model B21/B51 backventil

Sempell™ Dewrance backventil har utformats speciellt för motorns turbinskydd på kraftgenerationsångturbiner.

Certifications SIL capable, ASME B31.1, India Boiler Registration, PED
End Connection Butt Weld
Material Carbon Steel, Steel, Metal, Alloy
Pressure Class ASME, PN
Shutoff Class Class V (FCI 70-2)
Valve Size 6 inch (DN150) and Larger
Valve Size Standard DN, NPS
Valve Type  Engineered Product, Triple Offset Valve
  • Excellent reliability, internal counterweight to balance disc under low load conditions
  • Tilting disc design for quick closing due to lower center of gravity
  • Lightweight disc with minimum travel, for quick closing in less than 1 second
  • optimum performance under all flow conditions
  • Pneumatic power assistance acts directly onto disc, without leakages to inhibit operation
  • Low cost maintenance, expanded graphite gasket pressure seal design
  • Surface treated hinge pin, supported in surface treated bearings, giving a low coefficient of friction and hard wearing surface for maximum performance
  • Easy access through cover

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