Wich size tread in Tank?

Main Train Horns
1

I have a conductor setup wit the 5 Gallon tank and a Viair 400 compressor.

I broke my chehk valve and the broken part is still in the tank.

So I removed the adapter in the tank and need to buy a new one.

Wat do I need BSP or NPT??

The check valve seems to be a 1/4 NPT??

In the tank is it NPT or BSP?

Thanks and greetings,

Erik.

2

All the tanks and fittings from Hornblasters or Viair are NPT.
I would be very surprised if anything was BSP.
Welcome

3

Thanks for the answer,

So it is NPT but what size is in the tank?

Thanks and greetings,

Erik

4

Is it the Hornblasters 5 gallon tank? Then all 8 ports are 1/2" NPT.
http://www.hornblasters.com/products/details.php?i=hornair-black-5g8p-air-tank

5

Thanks!!!

Thats what I needed!

Greetings,

Erik

6

You’re welcome.
Haha show your gratitude by posting install pics - lol

7

Welcome to the forum. I think most plumbing in the US uses NPT.