GATEVALVE VS STOPCOCK:

[RONCHAM]

Whilst people are good enough to answer my silly questions, can I ask another!! Do gatevalves totally stop water flow or does a little still dribble through? I know a working stopcock is 100% - isn't it better to use these on the outlets from the loft tank, they surely don't impede flow too much?

 

[david17uk]

Working gate valves shut off fully.

Stop taps dramaticaly decrease flow rate due to there design. Whereas gatevalves are full bore (same as the pipe size) when fully open - hence, not restricting any flow at all. Which is why they are used

Another option would be a full bore iso valve, or full bore lever valve

 

[Soggy_weetabix]

Use neither.

Lever valves

Dave

 

[Cowboybuilder]

No contest use a gatevalve! Gate valves close 100% and open 100% (full bore)

 

[david17uk]

So do levers.

I always use gate valves though.

 

[gas4you]

Gate valves are not designed to be used on mains pressure though

 

[david17uk]

outlets from a loft tank arn't mains pressure

 

[gas4you]

Missed that bit

 

[HarrogateGas]

Not all gate valves are full bore, the cheap ones i picked up from plumbcenter the other day were only about 13mm through the centre and that was on the 28mm gatevalve. i took it back and swapped it for a pegler.

 

[Biggles..]

That'll be because plumb centres own gate valves dont conform to the bs.

 

[RONCHAM]

Plunb-centre should be given a swift kick up the derriere for selling sub-standard fittings. Many DIYers wouldn't spot this.

 

[seco services]

same with screwfix, bq etc. you buy cheap you get cheap.