KSB COBRA-TDC01/03, Installation & Operating Manual

Page: 17 / 32

5 Installation at Site
17 of 32
COBRA-TDC01/03
8194.8/02-EN
CAUTION
Painting pipes and actuator
Valve function impaired!
▷
Protect stem, plastic components and actuator elements prior to applying paint.
▪
For any further work (e.g. construction work, cleaning measures) protect the
valve and the piping against contamination (e.g. by covering it with a tarpaulin).
5.4.1 Flange connection
Fasteners Always use all flange bolt holes provided when connecting the valve to the pipe.
Flange connection ü The mating flange faces are clean and undamaged.
ü Verify that the pipe is correctly aligned and the flanges are parallel.
ü The inside diameter of the pipe flanges is within the permissible minimum and
maximum diameter limits.
ü Open and close the valve to check that the valve disc rotates freely.
1. Move the valve to the open position. Open it as far as possible without the valve
disc protruding beyond the body.
2. Push the pipe flanges as far apart as required to achieve a sufficient clearance
between the flange gaskets and the protruding liner faces.
3. Insert the valve between the two flanges and centre it with fasteners.
4. Tighten the fasteners evenly and crosswise with a suitable tool until contact is
established between the body and the pipe flanges.
5. Actuate the valve several times to verify that the valve disc rotates freely.
5.5 Insulation
WARNING
Cold/hot piping and/or valve
Risk of thermal injury!
▷
Insulate the valve.
▷ Fit warning signs.
For any insulation fitted on the valve observe the following:
▪ The valve's function must not be impaired.