Water installation - multilayer composite pipes CONNECT

  • Erstellt am 2020-03-26 19:55:59

Greymalone

2020-03-26 19:55:59
  • #1
Good day!

Due to the current situation, unfortunately my sanitary specialist company canceled on me and I have to handle the water installation in my newly purchased old building myself. I have decided on multilayer composite pipes with screw fittings from the company CONNECT. Now I am unsure about the connection to the fresh water (cold). Can someone tell me which adapter I need to connect a 16 mm multilayer pipe to the water connection? The galvanized steel pipe visible in the second photo runs about 8 meters along the basement ceiling and then splits at a T-piece into copper pipes of smaller diameter. Do I possibly have to provide this section with a larger diameter as well? The water basically only goes to the ground floor; on the first floor there is only a toilet with a washbasin, where lower water pressure would not be a big problem.

I have attached the photo. On the brass(?) part it says "RN22 DVGW Kiwa".

If any information is missing to solve this problem, please just ask and I will provide the missing info – since I am "only" a hobbyist, it wouldn't surprise me if this thread has technical gaps.

If someone could help me I would be very, very grateful!

Best regards!

 

Osnabruecker

2020-03-26 22:10:54
  • #2
If I were you, I would hire a different craftsman. The "few" euros more than the original are well invested. I would not risk water damage (sooner or later) in the new old building.
 

ypg

2020-03-26 22:22:19
  • #3
We are an amateur building forum. I would ask in another forum.
 

wrobel

2020-03-26 22:39:11
  • #4
Hi

What will be connected later as a consumer?
Toilet cistern? Washbasin? Shower?
Not much can go to the 16mm pipe.


Olli
 

Greymalone

2020-03-26 22:45:40
  • #5
Hi!
Basement/Laundry room: Washing machine
Ground floor kitchen: Dishwasher, sink
Ground floor bathroom: Shower, washbasin, toilet
Upper floor toilet: Washbasin, toilet
Best regards
Felix
 

wrobel

2020-03-27 00:00:23
  • #6
Hi

The total flow rate is 0.84 l/s, the peak flow rate is probably around 0.45 l/s.
I don't have the table for the rough calculation at hand right now.
So a 22mm CU pipe is to be installed. With the composite pipe, you are looking at a 25 or 26mm pipe.
The 16mm pipe is definitely not an option!!

Olli
 

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