The most common thread type is the BSP-G thread. This is the British Standard Pipe Gas thread type. You do also find this thread type in gas and water installations in your house.

The disadvantage of brass is that it can oxidize quite fast, when it is plated with a nickel coating this doesn’t happen anymore.

The T.E.A.+ coating is a alternative to nickel and nickel and chrome plating. Which is quite commonly used on espresso machines

In most cases the fittings on espresso machines are made from brass with a low lead content, which is allowed for espresso machines.

The most common size is the BSP-G thread. This is the British Standard Pipe – Gas. This is on virtually every espresso machine the standard, except for some brands such as Bezzera which use also metric thread sizes. But that is not common.

Repairing a pin hole in the copper by brazing it could be a option and does work from time to time. But we advice to make a new one. If you are able to braze copper tubing you are also able to make a new tube for your espresso machine.

Yes they are safe to use in espresso machines. The material brass is made of Copper, Zinc and a small percentage of lead. This is in the brass to make the machining process easier.