Sempell Dewrance Model B21/B51 Check Valve

Sempell Dewrance Model B21/B51 Check Valve

The Sempell™ Dewrance bled steam check valve has been designed specifically for non-return turbine protection on power generation steam turbines.

Any questions?

Fredrik Malmström
Solution Seller
Phone. +46 40-33 02 33

Linda Grönqvist
Solution Seller
Phone. +46 40-33 02 32

Anders Praem
Inside Sales Engineer
Phone. +45 2137 7759

Kenn Gerwien
Area Account Manager East
Phone. +45 2346 5513

Slawka Pedersen
Inside Sales Manager
Phone. +45 2137 7702

Henna Ketoja
Inside Sales Engineer
Mob. +358 400 612 124

Tommi Penttilä
Sales Manager Conventional Power
Phone. +358 207 416 208

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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