Series 121
INSTALLATION
600968EA
Edition 2015-11-16
9/27
NOTICE
Inappropriate tools
Sealing surfaces may get damaged.
Do not use sharp-edged tools.
NOTICE
Wrong tightening torque
Valve body and screws may get damaged.
Use tightening torque according the size of the screws.
NOTICE
Too long screws
Valve body may get deformed and / or malfunctions may occur.
Use only screws recommended by VAT.
1. Remove protective covers from body flanges.
2. Clean sealing surfaces and seals of both flanges;
see (1) and (2) according to «Figure 4-1».
The valve seat side is marked with the symbol «
∇
» on flange «A».
3. Lift the valve to the mounting position. For the size DN 320 (12150- . .14 / 24 / 34 / 44)
use only the eyebolts threads; see dimensional drawing.
4. Mount the four screws (3) according to «Figure 4-1», evenly in crosswise order until the
seal touches the sealing surface.
5. Tighten all screws with the torques appropriate for their property classes.
1 Flange A
2 Flange B
3 Screws
Figure 4-1
