Pentair V250 Manuel D'utilisation page 20

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How to connect valve, upper screen and riser tube
It is enough to shorten the free end of the riser tube to a length between 0 and 6 mm
from the upper edge of the tank. Remove the sharp edges (2 mm x 30°) to avoid
damage to the seal during installation. See drawing below.
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MANUAL_V250.indd 20
Φ 50 mm
Chamfer 2 mm x 30°
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14/02/13 16:26