Lug butterfly valve without flange clockwise type 125 DN50-200
Description
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Material and coating
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| Item | Description | Material | Coating |
1 | Body | Ductile Iron | Blue epoxy 250 microns |
2 | Disc | Stainless Steel 304 | |
3 and 14 | Seal | EPDM | |
4 and 5 | Shaft | Stainless Steel X20Cr13 | |
9 | O-ring | EPDM | |
10 | Plug | HDPE |
Different operating types
Lever operated: lever made from ductile iron, blue epoxy coated (thickness 250 microns mini).
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Handwheel operated: manual worm gear protected IP67 reinforced to IP68, painted basic red + blue epoxy (RAL 5005).
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Hydraulic characteristics
The headloss ∆P is expressed by the flow coefficient Kv that is the flow at a temperature of 20°C crossing the valve by triggering a headloss of 1 bar.
Those figures are tied by the simple following relation:
Kv = Q ∆P
with Q in m³/h and Kv in m³/h, ∆P in bar.
Kv values depending on the degree of the valve opening:
| DN | Degree of valve opening | ||||||||
| mm | 10° | 20° | 30° | 40° | 50° | 60° | 70° | 80° | 90° |
| 50 | - | 0.9 | 5.9 | 14.0 | 28.0 | 51.0 | 88.0 | 111.0 | 112.0 |
| 60-65 | - | 2.4 | 11.0 | 26.0 | 49.0 | 87.0 | 156 .0 | 232.0 | 249.0 |
| 80 | - | 5.0 | 20.0 | 47.0 | 87.0 | 151.0 | 274.0 | 442.0 | 492.0 |
| 100 | - | 9.2 | 37.0 | 84.0 | 154.0 | 260.0 | 471.0 | 789.0 | 895.0 |
| 150 | - | 22.0 | 108.0 | 221.0 | 381.0 | 621.0 | 1062.0 | 1802.0 | 2099.0 |
| 200 | - | 53.0 | 204.0 | 392.0 | 657.0 | 1050.0 | 1731.0 | 2946.0 | 3715.0 |
Conformity to Standards
- Face to face dimensions EN 558-1 serie 20
- Flanges of connection to pipes EN 1092-2
- Pressure tests EN 12 266-1
Drinking water approval
Epoxy coating and the rubber satisfy the requirements for drinking water of KTW and WRC - DGS in progress.
Marking
On the label:
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Necessary screw kits to install on the valve
In order to install the valve, it’s necessary to order
corresponding screw kits
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