Shower Pump Pulsing!

[Bennyboy]

Hello everyone.

Could someone please advise on a fix for this annoying problem?

I have a shower pump feeding our master ensuite which occasionally pulses once the tap or shower is turned off. This will continue to pulse until you turn the tap back on and the REALLY slowly turn it off. Or as my daughter has discovered, turn it on and off again rapidly (perhaps confusing the pump ) can also work.

This sometimes goes weeks or even months without issue, other times it is daily.

I have thought about installing an expansion tank but not sure if this is the right fix. Plus the pump is twin impeller so not sure whether it would be need to be tee'd across the H&C...

Thanks in advance.

 

[PETE 123]

My instance was the non return valve in pump was not working or stuck open
so fitted an in line non return valve fixed problem.

 

[Bennyboy]

OK that sounds promising. I guess I'd have to fit one on both hot and cold sides. Does it matter how far from the pump thet are? I assume closer the better...

 

[PETE 123]

The problem i had was on the hot water side the non return was fitted 1m away as does not make a difference.

 

[Bennyboy]

The problem i had was on the hot water side the non return was fitted 1m away as does not make a difference.

Sorry this is probably a silly question. Was this on the outlet of the pump or the inlet?

 

[rpm]

Would be on the outlet however some pump manufactors say No no to doing this..

 

[Bennyboy]

Sorry this is probably a silly question. Was this on the outlet of the pump or the inlet? Outlet

Would be on the outlet however some pump manufactors say No no to doing this..

Thanks for your help. Worked a treat

 

[Peter O’Leary]

I had same problem found there was slight blockage in filter/softener yoke on the spout of sink tap (debris from tank or plumbing). Unscrewed spout cleared debris and was ok.eter