Fitting a US tap :(

[Lee Nowell]

Hi All,

I bought a Grohe tap whilst in the US and the fittings are 1/2". I had ass= umed that a standard 1/2" tap fitting would work fine but have now discover= ed that the US use a different thread pattern to the UK :( Looking at the = instructions more closely it appears that the connection is actually 1/2" N= PT rather than BSP.

Anyone any idea where I can get a converter from? Ideally I would require = a 1/2" male NPT to 1/2" female BSP but anything to BSP would be OK as I can= plumb around it..

Any help appreciated.

thanks

Lee.

[Graham.]

that a standard 1/2" tap fitting would work fine but have now discovered that the US use a different thread pattern to the UK :( Looking at the instructions more closely it appears that the connection is actually 1/2" NPT rather than BSP.

1/2" male NPT to 1/2" female BSP but anything to BSP would be OK as I can plumb around it..

Force it!!!

[dent]

assumed that a standard 1/2" tap fitting would work fine but have now disc= overed that the US use a different thread pattern to the UK :( =A0Looking a= t the instructions more closely it appears that the connection is actually =

1/2" NPT rather than BSP.

ire a 1/2" male NPT to 1/2" female BSP but anything to BSP would be OK as I= can plumb around it..

I've got Grohe taps and they are European fittings which are a slightly different size to UK, rather than a different type. Is the US fitting really a different thread type, rather than just a different thread size?

dan.

[Man at B&Q]

d assumed that a standard 1/2" tap fitting would work fine but have now dis= covered that the US use a different thread pattern to the UK :( =A0Looking = at the instructions more closely it appears that the connection is actually= 1/2" NPT rather than BSP.

uire a 1/2" male NPT to 1/2" female BSP but anything to BSP would be OK as = I can plumb around it..

That's plumbing the depths.

MBQ

[Hognoxious]

Op zaterdag 19 mei 2012 21:09:49 UTC+2 schreef Lee Nowell het volgende:

You went on holiday to Disneyworld, accidentally walked into a plumbing supply shop and thought "I'll have that one!"? Happens to me all the time.

Anyway, you're lucky it wasn't Australia. The bolts all turn the wrong way.

[Pete Shew]

shop and thought "I'll have that one!"? Happens to me all the time.

Most of my spanners are universal, they can be used on both left and right handed threads.

[Baz]

Solder a bit of copper pipe into the threaded bit. It might have to be bored out.

At 1/2", BSPT is almost the Same as 1/2" NPT. TPI is the same. The Taper is the Same. But one has a 55 Deg Thread form and the Other has 60 deg.

They quite happily fit together.

Baz.

[docholliday93]

Looking at the tables, I'd agree that the sizes are very close, and I suspe= ct with normal tolerances they would fit together with no problems. I'd sus= pect the most likely scenario for having problems would be fitting an NPT m= ale into a BSP female thread, which isn't the problem here. Unforthunately when I had the same kind of problem the threads were 1/4", w= here the TPI are different...

[Baz]

Trying the BSP fitting, it goes about half way in relatively easily but then starts to get tight. I didn't want to force it at this stage in case it threaded it and I would be screwed... I also found a Nickel plated Brass fitting but unsure whether this would work? Anyone any idea what UK brass fittings are actually made from? I assume they are not solid brass?

That sound right Lee. The taper is just starting to engage. Carry on and it will tighten right up. Baz