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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.

POWER & HEATING PULP & PAPER Sempell

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
Mob. +358 40 512 2308

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