INSTALLATION
Series 191 / 192
10/26
Edition 2018-08-22
600246EA
NOTICE
Contamination
Product may get contaminated.
Always wear cleanroom gloves when handling the product.
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 4-2» on page 11.
The valve seat side is marked with the symbol «
∇
» on flange «A».
3. Lift the valve to the mounting position, use only the Load rings; see «Figure 4-1» on
page 9.
4. Mount the four screws (3) according to «Figure 4-2» on page 11, evenly in crosswise
order until the seal touches the sealing surface.
5. Tighten all screws with the torques appropriate for their property classes.
