Water Tank Shut off Valve

[DavidPeckham]

Hi all, anyone know where I might be able to source one of these (fitting is 7/8") sorry about the photo quality. Had a look around a few chandlery websites but not found anything similar.

 

Cheers

[Boat&Bikes]

I think a decent plumbing supplier would sort that for you. 

[Chewbacka]

Do you mean 7/8th bsp??

[WotEver]

Looks like 3/4” to me. 

[Chewbacka]

19 minutes ago, WotEver said:

Looks like 3/4” to me. 

Or possibly 1/2” bsp which is about 21mm across the pipe stub threads.

[DavidPeckham]

Cheers, think I might be getting confused with the measurements, I measured across the thread and that was 7/8" 

[Kingdom Isambard Brunel]

Its 1/2" BSP then. Looks like the old type plastic fittings with black pipe. Its female on the tank end and union on t'other.

[Sea Dog]

7 hours ago, Boater Sam said:

Its 1/2" BSP then. Looks like the old type plastic fittings with black pipe. Its female on the tank end and union on t'other.

Sam's gone for the italics - you just know he's right when he does that!

 

[rusty69]

3 minutes ago, Sea Dog said:

Sam's gone for the italics - you just know he's right when he does that!

 

He's gone for the rum bottle too! 

[DavidPeckham]

Cheers all, that'll be why I can't find any 7/8 ones then!

[Jen-in-Wellies]

8 minutes ago, DavidPeckham said:

Cheers all, that'll be why I can't find any 7/8 ones then!

BSP thread sizes have little relationship to the measured size, as you've found out. The 1/2" in 1/2"BSP was originally the inside diameter of the pipe on which the outside of the thread was to go. Not applicable to anything much these days, but BSP has become a near world wide standard for plumbing fittings, so the confusion remains. A chart of nominal BSP size, major diameter across the outside of the threads and the number of thread turns per inch is useful to bookmark. More details here. Everyone loves standards. That's why there are so many of them.

 

Jen

[DavidPeckham]

 Perfect - thanks!