What is the brass fitting?
Before you know about the brass fitting, let’s quickly talk about brass. Brass, what is it? Brass is a non-ferrous metal. It is an alloy of two metals: zinc and copper. In some cases, to combine specific properties, brass may also contain lead, nickel, tin, magnesium or even chromium. Brass is mainly used to make locksmiths, musical instruments, timepieces, plaques, decorative elements and plumbing!
The brass fitting has a similarity to the copper fitting, it is a solder fitting. It is used in particular to connect elements of different types to each other. Indeed, the brass fitting can be threaded at one end, making it possible to connect to a different material or to a faucet.
The brass fitting is intended for use with beaten collars. A beaten collar designates the end of a tube, flattened outward.
The beaten collar has two functions:
- He’s holding back the nut.
- It serves as a joint plane to make the screw connection.
In the case of use with beaten collars, the brass fitting must not be recessed or used for gas.
Assembling the brass fitting with solder
It should be noted that solder and solder are two different processes. Indeed, welding is the assembly of parts without adding metal or with the same as that of the parts to be welded. Welding therefore involves melting the parts to be welded. Brazing is the assembly of parts with a filler metal whose melting point is lower than that of the parts to be assembled. Brazing therefore does not involve the fusion of the parts to be assembled.
Here we are talking about solder for the assembly of brass. There are two types: soft soldering and hard soldering.
1. Soft soldering
It is popularly called tin solder. To melt tin, the heat is less than 450 °. Its implementation does not pose any problem or difficulty. Soft soldering allows copper to be soldered to copper and brass to copper.
2. Strong brazing
The Brass fittings Malaysia technique of hard soldering is essentially the same as that of soft soldering. Indeed only the temperature to melt the metal changes. Here a temperature above 450 ° is required, the metal generally being a silver-based alloy. The greater heat and composition of the metal requires more material. You need a torch and an oxygen / propane or oxygen / acetylene welding machine. There are also compact torches.
Strong brazing includes a risk of melting the brass fitting. The melting temperature of the filler metal being close to that of brass in the case of a copper / phosphorus alloy.
Assembling the brass screw connection
For the screw connection, the beaten collar is used. This technique is reserved for the assembly of the valve elements but also for the assembly of two tubes between them. This technique is based on the work of the pipe in order to widen one end, then fold it back to have a collar. Collar that is used as a stop for the nut that will come to rest on it
The brass fitting, the advantages and disadvantages
The brass fitting makes it possible to assemble 2 tubes with a flanged collar. It also allows the assembly of elements between them such as copper and steel. It is also very useful for the connection of the taps.