Difference between locksheild valve and control valve

[sparkybird]

Hi everyone

If all the covers are missing (!) how do you tell the difference? I need to know for balancing of central heating system.

Is it convention to have one on the right for example?

Hope someone can help

Thanks
SB

 

[kevplumb]

if ordinary valves it makes no difference at all

rad valve

• kevplumb
• 18 Aug 2010
• 1

 

[kevplumb]

if ordinary valves it makes no difference at all

rad valve

• kevplumb
• 18 Aug 2010
• 1

oh don't forget to turn them ANTIclockwise to open

some people get confused

 

[sparkybird]

HI Kev

thanks for speedy reply! I finally sussed out the anticlockwise thing.....

The valves look the same each end to me, so should I just ensure that I adjust the same ones on each rad, eg the right hand ones, when balancing?

 

[kevplumb]

good a way as any

 

[sparkybird]

Cool - many thanks

SB

 

[D_Hailsham]

If all the covers are missing (!) how do you tell the difference? I need to know for balancing of central heating system.

The one which gets hot first is the flow. It is more usual to have the lockshield valve on the return, though it does not make any difference as all it does is control the flow rate through the radiator.