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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.
Sempell Dewrance Model B21/B51 Check Valve
Specs
Valve Size Standard
DN, NPS
Valve Type
Engineered Product, Triple Offset Valve
Features
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
