



Non return ball check valve in cast iron DN50-400
CHOICE OF PRODUCT
Check valves
PRODUCT FAMILY
PIPELINE PROTECTION
PIPELINE PROTECTION
RANGE / MARK ®
CHECK VALVES and STRAINERS
Main features
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Material and coating
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Item | Description | Material | Coating |
1 | Body, cap and seat | Cast iron GS | Epoxy thickness 250 microns |
2 | Ball | DN50 TO 100 : Aluminium type AK 11 | NBR |
DN125 TO 400 : cast iron GS | |||
3 | Screws and bolts | Steel type A2 | |
4 | Joint cap/body | NBR |
Hydraulic characteristics
- Headloss at the opening 0.8 bar
- Headloss: Kv
Those sizes are tied by the simplified following relation:
Kv = Q ∆P
with Q in m³/h and Kv in m³/h, ∆P in bar.
Flow coefficient according to DN:
DN | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 |
KV (m³) | 92 | 145 | 265 | 384 | 642 | 784 | 1592 | 2480 | 3380 |
Tightness mini on water column downstream: 8m CE.
Installation drawing
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