Hello,
for my overhead shower, the manufacturer specifies DN20 pipes for the water lines (hot and cold) (the shower arm has a 3/4'' connection). I measured the outer diameter of the installed plastic pipes, which is 20mm (0.8 inches). I thought DN20 refers to the inner diameter. Could it be that only DN15 pipes were installed? The installer claims that DN20 pipes have a 20mm (0.8 inches) outer diameter.
Thank you very much for your help and best regards,
Achim
for my overhead shower, the manufacturer specifies DN20 pipes for the water lines (hot and cold) (the shower arm has a 3/4'' connection). I measured the outer diameter of the installed plastic pipes, which is 20mm (0.8 inches). I thought DN20 refers to the inner diameter. Could it be that only DN15 pipes were installed? The installer claims that DN20 pipes have a 20mm (0.8 inches) outer diameter.
Thank you very much for your help and best regards,
Achim
The pipe is—as I have now found out—a Viega Sanfix 20mm PE-Xc pipe. Does this match the required DN20 connection for the rain shower (Hansgrohe Raindance Royale S350 Air)? I understand that factors like pipe length, fixtures, floor height, etc. come into play—but what I don’t understand as a layperson is why the installation manual for the shower specifies supply lines with DN20... :-?
H
Hansgrohe Service14 Oct 2015 11:18Hello AMAG,
I am from Hansgrohe Service and found your inquiry here.
DN20 refers to the internal diameter (nominal diameter).
I cannot fully assess whether the pipe installed on-site is adequately sized, as the flow rate depends on many factors (geodetic height difference, pipe length, and so on). The fact is that with this sizing, the flow velocity in this section of the pipe is higher.
If you have further questions, we are also happy to assist you by phone at 07836511282.
I hope this helps you and wish you a good day.
Günther from the Hansgrohe Service Team
I am from Hansgrohe Service and found your inquiry here.
DN20 refers to the internal diameter (nominal diameter).
I cannot fully assess whether the pipe installed on-site is adequately sized, as the flow rate depends on many factors (geodetic height difference, pipe length, and so on). The fact is that with this sizing, the flow velocity in this section of the pipe is higher.
If you have further questions, we are also happy to assist you by phone at 07836511282.
I hope this helps you and wish you a good day.
Günther from the Hansgrohe Service Team
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