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2. Fit the DN 150 socket seal in the inlet port or the optional DN 160 socket if the bottom inlet is
chosen.
3. Insert the inlet pipe into the socket seal.
To facilitate maintenance and service of the product, we recommend that you fit an isolating
valve between the inlet port and the inlet pipe.
Required size: DN 100 or DN 150.
Related information
• 2.2 Scope of delivery
3.2.2.3 Connecting the outlet pipe
•
All pipe connections must be flexible to reduce resonance.
•
To avoid sediment buildup in the outlet pipe, the pipe must be sized for a minimum flow ve-
locity of 0.7 m/s.
Nominal diameter of pipe
Flow velocity: 0.7 m/s
•
The collecting line must have a filling ratio of at least h/d equal to 0.7.
•
The collecting line must be at least one nominal diameter larger after the outlet pipe connec-
tion.
•
Do not taper off the outlet pipe in the flow direction.
•
Lifting stations must be provided with an approved non-return valve according to EN
12050-4.
•
The volume of the outlet pipe above the non-return valve up to the backflow level must be
smaller than the effective tank volume.
•
Install an isolating valve in outlet pipes of DN 80 and up.
1. Connect the outlet pipe to a breeches pipe.
If you do not install a breeches pipe, make alternative pipework to connect an outlet pipe.
2. Lead the outlet pipe to the collecting line and connect these two.
The outlet pipe must have a bend above the backflow level which is often the street level.
Ask local authorities.
3.2.2.4 Connecting the vent pipe
All pipe connections must be flexible to reduce resonance.
Lifting stations for black wastewater must be vented above roof level. However, you may connect
the ventilation, as a secondary ventilation, to the main building ventilation system. Place special
vent valves outside the building. Special vent valves are available as accessories.
Make sure that the weight from the inlet, outlet and vent pipes does not rest on
the tank. Long pipe sections and valves must be supported.
Multilift MD1, MDV | | 12
80 mm
100 mm
3.6 l/s
5.6 l/s
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