Direction of expansion pipe from cylinder

size5

Hope someone might be able to give me some advise regarding expansion pipe i.e. horizantal pipe running from cylinder to vertical copper pipe(think its caused expansion pipe).

Had a engineer looking at my pump in hotpress that that pumps water for shower. He was called out by my plumber whom believed there should be a better flow of water from the shower(even though we were happy with it). Flowing at bout 6 litres per minute.

Anyway engineer found nothing wrong with the pump. He did note there was a slight dip on the expansion pipe i.e. the connection to the cylinder is higher(only slightly) that where it connects to the vertical pipe. He claimed the connection to the vertical pipe should be higher than the cylinder.

He believed that aire was getting trapped in the pump, which does explain the "cackling" or "coughing" sound when the shower is turned on.

My question after all of the above is-Is the engineer correct in what he is saying? Does it make any difference?

cheers
ps have attached picture where you can see the slight dip

sanbrafyffe

ah theres very little wrong with it.the fall is slight.wouldnt panic too much tbh

DoneDL

My question after all of the above is-Is the engineer correct in what he is saying? Does it make any difference?


OP he is spot on, the pipe should be raised.

size5

sanbrafyffe wrote: »

ah theres very little wrong with it.the fall is slight.wouldnt panic too much tbh

Cheers for the posts guys-agree sanbra -just the engineer noted it in his report and would be slightly afraid that warrany on pump may not be covered is expansion pipe wasn't changed and fault occurred in pump in future.

d o'c

get the pipe redone so it's rising as your man said.
Also fit get a surrey flange or similar to stop the pump drawing in bubbles and shortening its lifespan

aujopimur

It's possible that the exp. pipe has sagged over time due to lack of support, if so it should be easy sort out.

kay 9

In an ideal situation the expansion should go vertical after 457mm and have a slight rise to that point;) If it's dipping all the way to the Tee then it is not right.