DIN Valve for aluminium tank

[nielsgeode]

I live in The Netherlands (Europe) and I've just bought a Catalina 80cuf aluminium tank with a yoke valve. I'd like to put a DIN valve on it but I have no idea which thread the tank has.

Does anyone has an idea how I can see which DIN valve I need to order?

thanx,
Niels

 

[marchand]

The tank should have 3/4 - 14 NPSM threading.

 

[Luis H]

It is a 3/4 NPS neck opening. Make sure it is not confused with the metric M25 type valve available in Europe. From what I have read a European M25 valve can thread into this tank, but causing a very dangerous situation.

Read the bottom of this link:
Valves, Regulator Fittings, Cylinder Neck Openings -- More than you wanted to know



Here is on type of valve you could use:
Thermo Valves

 

[pescador775]

The Japanese made "Thermo" valve is sold in the US with 0.750 National Pipe Straight thread. (don't ask). Just make sure that your DIN valve, of whatever brand, is produced for the US market and has the LARGE 3/4 NPS thread and not the SMALL 7/8 UNF thread which is also widely available in the USA. As Luis said, the correct LARGE thread neck will look very similar to 25 mm but is actually slightly larger.

 

[nielsgeode]

Oke, thanx for you replay

Is the DIN thread (where you connect your first stage) universal in the US and europe/asia? In other words: will every DIN valve with the correct tank thread fit for me?

 

[Luis H]

Oke, thanx for you replay

Is the DIN thread (where you connect your first stage) universal in the US and europe/asia? In other words: will every DIN valve with the correct tank thread fit for me?

Yes, all the DIN connections meet the same standard.
You do have to be aware if you have a 200 bar or 300 bar DIN.

Again there is a lot more detail information about regulator fitting in this thread:
Valves, Regulator Fittings, Cylinder Neck Openings -- More than you wanted to know