Join Date: Jul 2008
Location: St. Margaret's Bay
Thanked 2 Times in 2 Posts
Rep Power: 9
Re: Fresh water pump occasionally pulses
There is a little internal pressure regulating valve inside the pump (usually a rubber disc backed up by a spring...) That is probably the culprit. A bit of grit from the tank may have got lodged in the valve, allowing a tiny amount of flow to recycle around the pump diaphragm and causing the pump to lose pressure and cycle. Sorry, I can't recommend a fix, other than taking the pump apart for cleaning - something you probably don't want to do if its under warranty. BTW, an inlet strainer or filiter is a good idea on any pump of this type and may prevent this sort of trouble in the future.