[Ronnie Bryce]

Hi, can anyone point me in the direction of a female 21mm screw on fitting please, straight or elbow. All I seem to find is half inch or inch and quarter online.
Many thank's for any info.
Ronnie.

[Spruce]

http://www.williamsonpumps.com/234-2926-1421-p.asp

http://www.williamsonpumps.com/234-3926-1517-p.asp

If I understood the question correctly

[andyM]

Daqua sell 'em.

[DaveG]

I thought the outlet on a Shurflo was 1/2" ?

[Spruce]

I thought the outlet on a Shurflo was 1/2" ?

Yes it is. This is why I wasn't sure if I understood the question properly.

.

[Perfect Windows]

Does 21mm refer to the size of spanner you're using?

As far as I know they are 1/2" BSP thread, which is the bit that matters.

Vin

[Spruce]

Does 21mm refer to the size of spanner you're using?

As far as I know they are 1/2" BSP thread, which is the bit that matters.

Vin

Never thought to think outside the proverbial box Vin.

My socket set goes up the 24mm and the next size up is a 1".  The 1" is a tight fit.

I've measured the diamt of the threads and that is approx 21mm.  So 1/2" BSP is nearly 21mm.  According to Google 20.955mm.