Nightjar "cpb"@ insert my surname here wrote:
On 17/08/2014 19:41, BruceB wrote:
In article , "Nightjar
\"cpb\"@" "insert my surname here says...

On 16/08/2014 15:26, BruceB wrote:


Thinking bigger is better I bought the 3/4 inch outside tap from
Toolstation. Item 32002. The 3/4 refers to the bsp thread size
conecting to the backplate.

I would expect it to apply to the outlet connector too. There would be
little point in having a different connection there. Have you tried
screwing it into the backplate to check?

I want to use hozelock type fittings but cannot work out how to connect
to the outlet which has a male thread.
A 3/4 inch hozelock connector is too small
A 1 inch hozelock conector is too big
It does not appear to be a bsp thread as the pitch is too fine.

Is there a standard for these tap threads I should know?

Yes - BSP

The outlet is definitely bigger than 3/4" bsp and smaller than 1" bsp.
I do not believe it is a bsp thread as it is much finer - a pitch of
about 1mm rather than 2mm.
The OD of the male thread is 30.2mm
The ID of the female thread for the 3/4" hose connector fitting that
came with it is 28.5mm

I can't find anything in my thread tables that match all those. The
diameters are right for 7/8" BSP, but that should have a 1.8mm pitch.
Nothing else comes close.



Could it be M30 x 1.5?