Pipeline ancillaries Disc, split disc and wafer check valves
10
Kv values
DN25 DN32 DN40 DN50 DN65 DN80 DN100 DN125 DN150 DN200 DN250 1" 1¼" 1½" 2" 2½" 3" 4" 5" 6" 8" 10"
Size
Kv
10.8
10.8
26
43
43
80
130
188
213
432
735
For conversion: Cv (UK) = Kv x 0.963 Cv (US) = Kv x 1.156 Opening pressures Differential pressures with zero flow. Flow direction
DN25 DN32 DN40 DN50 DN65 DN80 DN100 DN125 DN150 DN200 DN250 1" 1¼" 1½" 2" 2½" 3" 4" 5" 6" 8" 10" mbar 25 25 28 29 29 31 33 44 46 48.5 54 mpsi 0.363 0.363 0.406 0.421 0.421 0.450 0.479 0.638 0.667 0.703 0.783 mbar 22.5 22.5 24.5 24.5 24.5 25.5 27 32 33 34 37 mpsi 0.326 0.326 0.355 0.355 0.355 0.370 0.392 0.464 0.479 0.493 0.537 mbar 20 20 20 20 20 30 20 20 20 20 20 mpsi 0.290 0.290 0.290 0.290 0.290 0.435 0.290 0.290 0.290 0.290 0.290
Size
Principle of operation The DCV10 and DCV10C are opened by the pressure and flow of condensate and are closed by the pressure of the spring when the flow ceases and before reverse flow occurs.
7.5.31
Open
Closed
10.5 40
TI-P601-32 CMGT Issue 10
Page 6 of 10
DCV10 Stainless Steel and DCV10C Carbon Steel Centrally Guided Disc Check Valves
Powered by FlippingBook