5 Installation at Site
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8417.8/20-EN
CAUTION
Improper installation
Damage to the liner!
▷
Do not use a seal between body and flange.
▷
Provide sufficient clearance when inserting the valve into the pipe.
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Make sure that the body is correctly centred between the pipe flanges.
1)
1)
Fig. 11:
Minimum dimension for installation in the pipe
1)
Valve 40 mm
ü
The mating flange faces are clean and undamaged (Ra ≤ 25 µm).
ü
Verify that the piping 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 faces and the protruding liner faces.
3. Insert the valve between the two flanges and centre it with the 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.
Содержание BOAX-B
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