Correct bore sizing for a shower hose for a pumped water supply

  • #1
reddwarf4ever
2
0
TL;DR Summary
Correct bore sizing for a shower hose for a pumped water supply
Please don’t laugh, this may sound a trivial question, but it is important. I have seen so many conflicting opinions, even from manufacturers. Some say, just use the biggest bore possible, others say use a small bore 8mm for a fully pumped system & a large bore 11mm for a gravity system. There must be a reason why different size bore hoses are manufactured.

I changed the shower hose yesterday, thinking it to be the same; although it did have a scale catcher fitted, which I discarded, to a full bore 11mm shower hose, but it appears the flow is now less, so should I change it to an 8mm bore to achieve the maximum flow rate.

Many thanks
 

Answers and Replies

  • #2
russ_watters
Mentor
22,056
9,153
Larger hose = higher flow rate.

Are you using the same head on each?
 
  • #3
reddwarf4ever
2
0
Yes hot and cold are pumped,
 

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