Pressure drainage (wastewater only)

2020-09-18 19:49:52

The manhole cover is not airtight. In the manhole from Jung (PKS something), in addition to the pressure pipe and supply line DN160, there are also 2 prepared holes DN110 for technology and final ventilation. The supply line for the pumps and pressure bells (?) for measuring the water level goes through the technology. There is an airtight plug for this. You can simply lay the final ventilation with DN110 away from the manhole; there is then a kind of tower. So far, no odor has been detectable with us even at high temperatures.

2020-09-21 20:19:14

Hello teh_M,

thank you. Then we are probably on the right track here.

Best regards

2021-01-18 19:57:11

I installed exactly this type of pump as a dual system because I need to pump both wastewater and rainwater. I have about 1m height difference with a 15m pressure pipe.

It has only been running since January but so far very satisfied. The pumps are rather bored. Almost 5 hours total runtime of the pumps which means about €6 electricity cost. I have not yet received an offer for annual maintenance.

can you please help me again with this matter. How did you solve the backflow loop? Our pump shaft is about 5.5 meters below the backflow level. Since it is difficult for us to simply install a backflow loop. The approved application from the city refers to DIN 12056. We have to protect against backflow here. Until now I thought to set the shaft below house level and if water bypasses the pump (which should actually not happen) then the shaft would overflow and water would flow into the garden. The garden is a bit lower. That would be the lesser evil. Gladly also other opinions or experiences.

2021-01-18 20:46:00

Hmm, I don’t know the standard. I haven’t installed any backflow loop at all. For me, the difference is not as big as with you (the base slab is slightly at channel level, the property has a steep slope at the beginning). If you get the PKS-D1000-D40 (or something similar), Jung provides datasheets etc. I attached 2 pictures.

The picture from above has 2 shut-off valves toward the pressure outlet. In front of them are ball heads at the top of the riser line per pump that secure against backflow (3rd picture in yellow)? I don’t know if that already counts as backflow protection and replaces the backflow loop. That’s how it is for me :D You’d have to call Jung pumps about that.

The critical case is when the power goes out, and for that I have an overflow; first, the cistern fills up, then it goes via a DN160, where rainwater normally drains, to the back part of the property. Then I actually have to clean everything but the wastewater is not in the house.

2021-01-18 20:56:13

Hmm, I don't know the standard. I haven't installed a backflow loop at all. For me, the difference isn't as big as for you (the base slab is slightly at canal level, the property has a steep slope at the beginning). If you get the PKS-D1000-D40 (or something similar), you can find data sheets etc. at Jung. I've attached 2 pictures. The picture from above has 2 shut-off valves towards the pressure outlet. In front of them, there are ball heads at the top of the riser pipe per pump that secure against backflow (3rd picture in yellow). I don't know if that's already considered a backflow protection and replaces the backflow loop. That's how it is for me :D One would have to call Jung pumps. The critical case is when the power goes out, and for that I have an overflow: first, the cistern fills up, then it goes over a DN160 where normally rainwater flows to the back part of the property. Then I do have to clean everything, but the wastewater is not in the house. [ATTACH alt="PKS_oben.png"]56298[/ATTACH][ATTACH alt="PKS_Seite.png"]56299[/ATTACH][ATTACH alt="Rückstau_Q.png"]56300[/ATTACH]

2021-01-18 21:02:10

Thank you for the super fast response. The overflow idea sounds very good. I was thinking along similar lines. I would place the shaft (circle in red) below house level. If there is a failure, the pump shaft fills up and wastewater comes out of the lid instead of flowing back into the house. Around the shaft, I would design it so that it drains into the garden. Do you mean the pump shaft when you say cistern, or do you have an additional construction? If you mean the pump shaft, how did you connect DIN 160 to the shaft? In the sketch, there is only the inlet for wastewater and the pressure line towards the sewer.

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Pressure drainage (wastewater only)

teh_M

drjack2000

drjack2000

teh_M

drjack2000

drjack2000