ZhengFeng Combined Butterfly-Check Valve is used for the inlet pipe of pump outlet and turbine.
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Product Scope: NPS 20” ~ NPS56” , 10bar ~ 16bar
Features:
Full Pipe Size Flow Area
Absolutely Reliable, Gravity-powered Closing System & Hydraulic Control System
Two-Speed Closing Action Prevents Surge Pressures
The Valve can be Opened Using an Emergency Hand Pump
Prevent Pump from Reversing when Power Cut
Face to Face Dimensions:AMSE B16.10
Flange End Dimension :AMSE B16.10
Coating: Fusion Bonded Epoxy Coating
Inspection and Test：API 598 / ISO 5208 / EN 12226-2
|
Part |
Material |
EN Spec. |
|
Body |
Ductile Iron |
EN-JS1050 |
|
Heavy Punch |
Ductile Iron |
EN-JS1050 |
|
Disc/Stem |
Stainless Steel 420 Stainless Steel 431 |
BS970 420S37 BS970 431S29 |
|
Hydraulic Power Pack |
Siemens or others |
Commercial |
|
For materials options not listed,consult factory. ZhengFeng manufactures valves in more than 50 different alloys. |
||
|
NPS |
In |
20 |
24 |
28 |
32 |
36 |
40 |
48 |
56 |
|
O |
mm |
400 |
400 |
400 |
400 |
400 |
400 |
500 |
|
|
N |
mm |
342 |
397 |
437 |
517 |
567 |
637 |
730 |
902 |
|
Q |
mm |
358 |
439 |
451 |
546 |
588 |
646 |
756 |
993 |
|
P |
mm |
1012 |
1067 |
1107 |
1187 |
1237 |
1307 |
1400 |
1582 |
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