Isolating Valve

[ADRIANPBIRD]

I'm installing an isolating valve on a supply to an electric shower. Screwfix sell a "full bore" version. Is this preferable to the non full bore one?

 

[rocketmanbkk]

Yes.

 

[Knappers]

I find they tend to seize over time, I'd use a lever valve and remove the lever if nes.

 

[ADRIANPBIRD]

I find they tend to seize over time, I'd use a lever valve and remove the lever if nes.

I've previously installed one with a small plastic handle, and found these tend to seize.

 

[ADRIANPBIRD]

Yes.

I was afraid that might be the answer! I already have a non "full bore" one from a previous diy job, would you suggest i still purchase a full bore isolator?

 

[ADRIANPBIRD]

Have just found this review from the screwfix website....." Have purchased a number of these. Full bore makes a massive difference with the flow of water". I guess that answers my question !!

 

[Knappers]

really doesn't matter much either way but would rank
1.lever valve
2.full bore
3.normal ballofix

Please don't mention any other options, it really doesn't matter.
makes a big difference with low pressure, doubt it will with your shower

 

[rocketmanbkk]

I like levers also

 

[Best]

The small bore isolating valves will make no difference to flow if on a good mains supply. If they actually did make a difference you would have a hotter shower! That's how most electric showers work - by same heat performance but less flow more heat.
Have you seen the small restrictive works inside them showers?
The only difference is the full flow isolating valves (slotted screw type) seem to be better quality and have ptfe seals on the ball, so hopefully won't leak