28
EB 8139 EN
Servicing
7.3 Tightening torques
Table 2:
Tightening torques
for the valve bonnet (10)
Valve size
Tightening
torque
G ½ to G ¾
DN 15 to 20
40 Nm
G 1 to G 1¼ DN 25 to 32
80 Nm
G 1½ to G 2 DN 40 to 50
160 Nm
7.4 Preparation for return ship-
ment
Proceed as follows to return devices to
SAMSON:
1. Put the control valve out of operation (see
section 9).
2. Decontaminate the valve. Remove any
residual process medium.
3. Fill in the Declaration on Contamination,
which can be downloaded from our
website at
u
www.samson.de > Services
> Check lists for after sales service >
Declaration on Contamination.
4.
Send the valve together with the filled-in
form to your nearest SAMSON subsidi-
ary. SAMSON subsidiaries are listed on
our website at
u
www.samson.de >
Contact.
7.5 Ordering spare parts and
operating supplies
Contact your nearest SAMSON subsidiary
or the SAMSON After-sales Service depart-
ment for information on spare parts, lubri-
cants and tools.
