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It was definately a brand new pump in a new box. I watched him install it. There are no hot pipes where a leak would not be visible. Underfloor heating but then that has nothing to do with the pump. If the pre charge vessel loses its charge due to air escaping somewhere, and that sounds to...

Wow. You really sound like experts and I wish I had a clue what you are talking about. Well thats maybe a little harsh on myself as I do understand a little. I totally understand tryitansee's comment which makes absolute sense. We had a sunstantial leak (o ring must have gone) coming from...

Hi. I have exactly the smae problem with a stuart turner monsoon 4 bar twin pump. Huting occurs every 20 mins or so for about 5 seconds. One other post has also suggested the vessel may have lost its charge. How does a lay person recharge this vessel or is this a job for a plumber. Does any...

Thanks. Its very difficult for me as I am not a plumber. I may be able to take some pictures and send them otherwise I will explain very simply what I know. The expansion vessel I refer to is prob 30cm diameter by 40cm height and sits next to the boiler. The whole central heating system is...

All the equipment is less than two years old and installed by BG. The expansion vessel looks as good as new and remains at around 2 bar (are we talking about the main expansion vessel). There are two WCs connected but neither cistern looks to be overflowing. Not sure what you mean by the...

I have a Stuart Turner Monsoon Universal 4 bar twin negative head which feeds the house. We had a bathroom installed in the loft. After a while the pump began hunting in the middle. Turning on for about 5 seconds and the turning off whilst there was not running water, apparent leaks or...