Thread i.d needed.

[4String.]

Chaps,

Apologies for starting a thread about a thread , but what thread is this:




It’s a tap I got from Amazon for a fresh water tank I’m having made for the truck, but the sizes seem a mite odd to me. Digital calipers put the OD at a whisker over 1.3”, or 33mm for any younger readers . Can’t find the thread gauges but a quick measure looks like it’s about 12/13 tpi. Its made by “Genebre”, a Spanish company apparently, but as it was from Amazon, doubtless it’s Chinese..

Does 1”BSP sound right for it?

 

[Anguz]

Right size but bsp 14tpi

 

[Hood]

1" BSP is 11TPI.

 

[Anguz]

I blame it on the bifocals

 

[julianf]

If I were getting a tank made, I'd get a 3/4 BSP or 1" bsp etc. rather than some odd thread (not saying that your tap is, I've not looked it up)

Then either buy a standard thread tap or adapt.

 

[4String.]

After another measure I reckon it is 1”BSP. TPI looks to be about 11, if the man cave weren’t like a bomb site I might be able to find the serious engineering gear .

 

[cheb]

Didn't it specify thread details in the advert?

 

[julianf]

Americans like their npt threads also. Again I'd get the tank made up as BSP and then convert. The tank will last longer than an odd ball valve probably.

 

[Hood]

I think NPT male threads are tapered.

 

[rikrobson]

Measure the inside diameter. That's how bsp threads are sized

 

[grim_d]

Epoxy.