DIYbanter - View Single Post

wrote:
Hi

I need isolating valves for the CH so I can take rads off and still run
the rest. I've got 15mm or half inch copper, little room to play with,
and 2-3m of pipe will be hanging off the valves in some locations, so
I'm thinking compression rather than pushfit. Compression would also
make reassembly easier, with egtting everything lined up.

I ask cos Ive heard there are issues with full flow or not - which of
the following screwfixes ok for CH? Whats the difference? I know diddly
about water valves.

13483 79p p290 (I see they have an arrow on, I dont know which way the
water flows).

the arrow is only significant for mains pressure use. The slight
restriction should make sod all difference to CH - these should be ok

17447 £1.20 p290

18796 2.29 p291

19933 2.29 p291

21860 3.19 p291

http://www.screwfix.com/

thanks,
NT