Lug butterfly valve without flange clockwise type 125 DN50-200

Lug butterfly valve without flange clockwise type 125 DN50-200

RANGE / MARK ®
Butterfly Valves ® LUG
CHOICE OF PRODUCT
Valve without flange
Manual type
PRODUCT FAMILY
VALVES
VALVES
Butterfly valve
Butterfly valve
Main features

Description

Material and coating

ItemDescriptionMaterialCoating

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).

Handwheel operated: manual worm gear protected IP67 reinforced to IP68, painted basic red + blue epoxy (RAL 5005).

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:

DNDegree of valve opening
mm10°20°30°40°50°60°70°80°90°
50-0.95.914.028.051.088.0111.0112.0
60-65-2.411.026.049.087.0156 .0232.0249.0
80-5.020.047.087.0151.0274.0442.0492.0
100-9.237.084.0154.0260.0471.0789.0895.0
150-22.0108.0221.0381.0621.01062.01802.02099.0
200-53.0204.0392.0657.01050.01731.02946.03715.0

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:

Necessary screw kits to install on the valve

In order to install the valve, it’s necessary to order

corresponding screw kits

.

Solutions