Loss of pressure - Blocked PRV?

[crappy]

Hi Folks,

First post here so be kind....

Recently my neighbour replaced the mains pipe from the street to his house. Around the same time, I have lost pressure in my house.

I have a lot of flow, same as usual, but no pressure. (If that makes sense?) I can block the tap with my thumb without much of a fight, before this was not possible. The sprinkler would normally reach about 10-12ft in the air, it now barely musters 4.

If you block a tap or hose with your thumb, when you let go there is a "burst" of water and then it reduces.

I've been told this could be a blocked cartridge in the pressure reducing valve. Where would this be situated? I have found the main tap in the house but that is all there is - a tap. Nothing else. Right after the tap there is a T for the washing machine so I doubt it would be downstream of this. Would it be outside? Is there a "normal" place it is put?

My house is about 50-60 years old and to my knowledge, has had no plumbing work done on it.

Thanks in advance

Cheers,
Crispin

 

[ChrisR]

Umless your mains is very high pressure you wouldn't normally have a PRV on the mains.
SOunds like you have a blockage in the "communication" pipe from the road. Call your water provider, but it would be difficult to shift it

 

[Axel]

After recent Thames water work on my neighbours supply I have also lost pressure...they've ******ed it up somewhere...

 

[crappy]

Thanks for the answers fellas. How would a blockage still allow normal flow but poor pressure? i.e. nothing on the end of the hose and it's fine. Well, maybe slightly down.

Cheers,
Crispin