•
Installation on new pipe work
1.
Make sure that:
- The flange surfaces are clean and undamaged.
- The valve fits between the flanges without difficulty and without damaging the sleeve. Prise apart the flanges with suitable tools
without damaging the flanges.
- The internal diameter of the flanges conforms to the dimensions in the «
flange ratings
» table.
- Nothing interferes with the movement of the shutter when the valve is operating.
2.
Close the disc so that it is about 5 to 10mm inside the casing.
3.
Fit the two flanges to the casing using some bolts, tighten the valve a little between the two flanges.
4.
Fix this whole assembly to the pipe work.
5.
Consolidate the flanges to the pipe work by welding at several points.
6.
Unscrew the bolts and remove the valve from between the flanges.
Never weld the flanges with the valve in place : risk of burning the elastomer liner.
7.
Finish welding the flanges and allow to cool completely.
8.
Return the valve to the pipe work using the procedure "installation on existing pipe work".(from point 3.).
•
Flange ratings :
The Sylax butterfly valves DN 25-350 has been designed to be fitted between standard flanges. Only flanges type 11, 21 and 34
according to EN 1092-1 are completely suitable for this valve.
For other flange models, please check the figures in the table below. Non appropriate connections will cancel our guarantee.
•
Installation conditions
It is recommended that the distances indicated below be respected in order to prolong the life of the valve. Mounting the valve close to
pipe work junctions places it in turbulent zones and increases wear.
Mounting instructions for butterfly valves
SYLAX DN 25-350
5
DN
Ø A0
Ø A1 mini
Ø A2 maxi
Ø B mini
25
32
-
44
60
32/40
43
33
51
80
50
54
40
60
90
65
70
59
74
110
80
85
78
91
128
100
100
97
108
148
125
125
119
143
178
150
150
146
166
202
200
200
196
224
258
250
250
246
280
312
300
300
296
329
365
350
340
335
369
415
Modifications, errors and printing mistakes cannot be held responsible for damages incurred. Socla reserves
the right to modify products without prior warning. All trademarks of these products are the property of the
respective companies .