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Yes you are right!!! It is not posible that with no leak and a brand new blue plastic 25mm pipe ther is such a drop. Both readings are taken from taps of the same characteristics, no open pipe. Two way: in at 25mm out at 22mm. I will take some photos tomorrow afternoon, with daylight...

Hi John, Many thanks for having a look into this. The stopcock in the property is a two way 25mm x22mm in brass. Yes we also replaced the feed to the boiler to maximise the pressure and flow Wessex water is using a device that fits in the 22mm pipe that measures noth pressure and flow...

Measuring form the propoerty's stopcock. And yes there are no ballofix, teeny tap tails or neighbour's sharing it. Any other posibilities?

Wessex water has taken the readings for us. The first reading is taken in the street stopcock and the second reading (the one in the garage/property) in the property's stopcock. This one has an adaptor form 22mm to 18mm-brand new and checked twice. The pressure in the street's stopcock is...

The drop in pressure is form th water meter to the turn off tap in the garage. Everything is brand new. What I cannnot get around is the huge drop in flow. It basically halfs. Thanks for your reply, though.

Has anyone heard about this product before? Does it do what it says in the tin?

My client has had problems with their mains pressure since they moved in 5 years ago. We changed boiler to a Worcester 440 Highflow, and upgraded the mains supply to 22mm from the water mains. Still the flow is around 10litres per second. We have had countless visits from Wessex water and...