Connecting the discharge pipe
1 | Lifting unit |
2 | Discharge port |
3 | Non-return valve |
4 | Double nipple |
5 | Shut-off valve |
6 | Hose nipple |
7 | Flexible collar |
8 | Pipe clamp |
9 | Discharge pipe |
Follow these points to connect the discharge pipe:
- Make sure that the discharge pipe is DN 32 or larger.
- Be conscious of the flow rate in the discharge pipe: 0.7 m/s (2.3 ft/s) to 2.3 m/s (7.5 ft/s).
- Do not decrease the pipe diameter.
- Make sure that all connections are fully tight.
- Install the discharge pipe as a “pipe loop” to prevent backflow from the primary public sewer.
- At the highest point, the bottom edge of the pipe loop must be above the locally given backflow level.
- To prevent frost, install the discharge line sufficiently deep.
- Install a shut-off valve.
- The lifting unit is installed correctly.
- The discharge pipe is installed correctly as shown in the consulting documents.
- Assembly materials are prepared:
1x shut-off valve
1x flexible collar
1x double nipple
1x hose nipple
2x pipe clamps
- Screw the double nipple in the non-return valve.Tightening torque: 8 Nm (5.9 ft·lb).
- To prevent leakage, it is recommended to apply seal connection with Teflon tape for all screw connections.
- Screw the shut-off valve on the double nipple.Tightening torque: 8 Nm (5.9 ft·lb).
- Screw the hose nipple in the shut-off valve. Tightening torque: 5 Nm (3.7 ft·lb).
- Slide the flexible collar over the discharge pipe.
- Slide the flexible collar over the hose nipple.
- To make sure that the discharge pipe is connected in a sound-isolated manner, keep a 40 … 60 mm (1.5 … 2.4 in) distance between the end of the discharge pipe and the end of the hose nipple.
- If the distance is too small, decrease the length of the discharge pipe.
- If the distance is too large, extend or replace the discharge pipe. - Align the flexible collar centrally between the shut-off valve and the discharge pipe.
- Fasten the flexible collar to the hose nipple and discharge pipe with one pipe clamp each. Tightening torque: 5 Nm (3.7 ft·lb).
- Discharge pipe is connected. Next step: Connecting the inlet.
