DIY Doctor UK DIY Forums

The cold water tank in my loft has a constant drip from the float valve and will not fully shut off even when you apply a little upwards pressure to the float arm
The valve body looks corroded as well and due to a new float valve being inexpensive, a repair kit or service kit doesn't seem worth the bother and I would rather replace the item for new
Just want to know the basic differance between a Part 1 and Part 2 valve and is there a reason for fitting one type over the other
I can see that the Part 2 valves have a bend on the float arm and that the water exits via a plastic spout on the top of the valve but I presume that theres more to it than that
Also some replacement valves are rated as either Low / High pressure. How do I know which one I need for my system
Thanks in advance for any info..
Cheers !

toplondonchef,
In most cases a part 2 valve should be fitted to comply with regulations so as to give the required air gap between the water surface and the BV outlet.
Mains fed ball valves should generally be HP.
end

Thanks Stoneboy for the reply and advice

Have gone for a Pegler Prestex Part 2 and it looks like a beauty !!
Seems a bargain at £6.49 (Screwfix)
Will fit it this weekend

Cheers