Poor water pressure

Some thoughts - and forgive me if this seems like questioning the bleedxxg obvious.

1. I thought the non-return valve was built into the output of the Reich pump. (See the bit sticking up in the picture below.) If you have fitted another one, are the two working against each other?

2. I assume the pump is running and so trying to push water somewhere?

3. There are two water pipes from the tank. One is the feed and the other is the return. The pump runs at constant pressure and any 'unused' water (e.g. tap only just on) comes back to the tank. I suppose there is no chance you have switched these pipes in connecting the new pump?

Hope you sort it out.

Philip

Poor Water Pressure

Many thanks for replies on this. I'm still at a loss at the moment. Now getting no flow from any taps. When I turn on a tap with the drain taps open there is a flow out of the system suggesting there is water in the pipes generally, just not enough pressure to push it up through the sink taps. Perhaps this also suggests air lock not the cause.
I am thinking the pump ( Hymer standard part - Tandem 19l/ 1.4 bar ) may not be creating enough pressure and could simply be faulty or blocked in some way. How do I know what is enough pressure though ? The stream out of the tank outlet pipe looks quite strong. Am I right in thinking that it should move 19 litres in one minute from where it sits in the tank ie if I connect the out pipe to a piece of hose and empty into a bucket it will indeed take one minute to produce this amount of water ?
Looking very much that a professional is going to be needed here !!

Re: Poor Water Pressure

chalten said:

Am I right in thinking that it should move 19 litres in one minute from where it sits in the tank ie if I connect the out pipe to a piece of hose and empty into a bucket it will indeed take one minute to produce this amount of water ?
Looking very much that a professional is going to be needed here !!

Click to expand...

Indeed, that is what the pump should be capable of.

If the strainer isn't blocked, you don't have a leak, and there are NO air locks, I suggest removing the outlet pipe from the pump and with each tap opened and closed in slow succession, try sucking back through the pipe and into a bucket, being careful not to swallow anything that MAY be dislodged.

Reconnect, prime the pump, and try again.

The best of luck. :?

Jock.

Re: Poor Water Pressure

chalten said:

Again many thanks for advice.
Some progress - removing pump , shaking again and running in a bucket it produced a better flow and taps / shower OK . A day later flow not quite so good , but still working. No toilet flush though , but I always suspected this might be a different issue anyway.
Will get a specialist to look it over for any other faults.

Click to expand...

Hi again Chalten,

If the flow is not so good a day later, I would definitely suspect a leak in the system, ie, air getting in, and possibly water getting out, as it doesn't seem to be holding the pressure.
Re the toilet flush....it is usually the last in the line. The last time I had a poor toilet flush, I changed the wires over at the pump, and hey presto, but you did mention you tried that, at the beginning of your thread.

Sorry to read that a DIY fix doesn't appear to bring a cure to your problem.

Incidentally, have you traced the pipework and joints from the pump to all outlets, to check for seepage. We did have a problem with loose jubilee clips at one time, causing a pipe to blow off the tap inlet stem. Most others needed tightening too.

Regards,

Jock.