Bardiani Valvole BBZO Instruction, Use And Maintenance Manual page 14

5 Installation
Only use pulsed arc welding and rememeber no gap between flange
and tank plate.
A
E
Tack weld always on the opposite side (8 segments with filler metal).
G
C
Weld root if possible without filler metal. Welding of the final run
D
must be done in 8 segments to avoid crack.
H
B
F
Assemble the valve after welding.
Check before using the valve:
Supply compressed air in the various A - B - C inputs one by one
Operate the valve several times to make sure it works properly.
B
A
14 EN-IST-BBZO-0420