"The Medway Handyman" wrote in message
...
On 23/05/2013 21:38, Bob Minchin wrote:
Dave Liquorice wrote:
On Thu, 23 May 2013 11:57:38 +0100, Dave Baker wrote:

I want to buy a hose pipe to attach to the outdoor tap at my new house.
Thread size measures up at about 30mm o/d and a tad less than 2mm pitch
which doesn't seem to be any normal BSP size.

In the sheds what you can buy will fit... I thought they where 3/4" BSP
but thinking about it that is the same a washing machine conector which
is smaller, so 1" BSP.

Wikipedia has 1" BSP as 11 threads/inch 1.309 inches dia (2.309 and
33.249 mm). Have you measured yours or just eyeballed it?

Knowing the OP reputation as a precision engineer, I'd assumed his
measurements to be reasonably accurate.
About 30mm o/d and less than 2mm pitch stacks up with 7/8" BSP x 14tpi.
Bob

Don't think you will ever find one :-)

IN 30+ years of selling pressure washers I've never come across one that
didn't have a 3/4" bsp male thread for the inlet connection. The Hozelock
tap connectors fit them & the tap.


in my travels around europe in a motorhome, i came across loads of different
tap connections,

in france it seem'd popular to have 2 taps side by side fed from a large
bore pipe, one would be the standard 3/4 fitting for 1/2 inch hosepipe, the
other would be the next size up, used with 3/4 inch hosepipe,

difference in flow was fantastic, could fill the 150 litre tank up in about
half the time with a 3/4 inch length of hose,

I collected a load of adaptors over time, so i could connect to almost any
tap i found, the one that got me was in scotland, service station in
aviemore, sized slightly larger than 3/4, but smaller than any of the larger
adaptors i had, used the back up of the rubber cuf and jubilee clip to
connect to it in the end.