ELEKTROGAS – MANUALE TECNICO
10-12
Installation and
servicing
To assure a proper and safe operation, as well as a long life of the valve, the installation
procedure and a periodical servicing are very important topics and the following instructions
should be always fulfilled.
IMPORTANT: before proceeding with the installation, ensure that all the features of your system
are comply with the specifications of the valve (gas type, operating pressure, flow rate, ambient
temperature, electrical voltage, etc.).
CAUTION
Shut off the gas supply at the main manual shut-off valve and disconnect electrical
power to the valve before proceeding installation or servicing.
PIPING CONNECTION
-
Check correspondence of flow direction with arrow printed on valve body.
-
Check correct alignment of connecting pipes.
-
Ensure that installing area is protected from rain and water splashes or drops.
-
Remove the end caps and make sure no foreign body is entered into the valve during
handling.
THREADED MODELS
-
Put sealing agent onto the pipe thread. Avoid excessive quantities which could enter in the
valve and damage the seal seat.
-
Screw the pipes using proper tools only. Do not use unit as lever because damage to the
valve stem could result.
FLANGED MODELS
-
Position the gasket or sealing agent on the flanges and insert the bolts with washers.
-
Screw the nuts tightening them crosswise and using proper tools only. Avoid overtightening
and mount tension free.
Following chart shows the maximum values of bending moment (Fmax), torque (Tmax) and
screws driving torque (Cmax), according to EN161.
Tab. 5
Fig. 4
Valve may be mounted with coil in horizontal or vertical position. Coil may be oriented 360
degrees in any direction.
Connections
F
max
(Nm) t<10 s
T
max
(Nm)
C
max
(Nm)
Rp3/8 70
35
-
Rp1/2 105
50 -
Rp3/4 225
85 -
Rp1 340
125
-
Rp1¼ 475
160
-
Rp1½ DN40
610
200
50
Rp2 DN50
1100
250
50
DN65 1600
- 50
DN80 2400
- 50
DN100 5000 - 80
DN125 6000 - 160
DN150 7600 - 160
DN200 7600 - 160
Maximum 90°
from vertical
