Compression fittings are not recommended to be used with steel tube. When using compression fittings with any type of plastic tubing, a brass insert must be used for further support. Compression fittings come in a variety of sizes and part numbers.

Can you use compression fittings on steel tubing?

Compression fittings are not recommended to be used with steel tube. When using compression fittings with any type of plastic tubing, a brass insert must be used for further support. Compression fittings come in a variety of sizes and part numbers.

What are the sizes of compression fittings?

Sizes 35mm, 42mm and 54mm are supplied with octagonal capnuts. Fittings in 66.7mm, 76.1mm and 108mm sizes incorporate loose compression plates, where tightening is through six 3/8″ BSW nuts. Conex Compression fittings are also available in hex nut from sizes 6mm to 28mm.

Is NPT same as compression?

NPT (ends) look very different than compression (ends). NPT has no nuts or ferrules, but instead relies entirely on a thread connection. Like plastic tubing, the product designation for NPT (and pipe in general) is the internal diameter (ID), not tubing OD like compression.

Can you use plastic pipe compression fittings?

Compression fittings on plastic pipe A compression fitting works in the same way on a plastic pipe as it does on a copper pipe except that you need to put in a liner, which is there to keep the end of the pipe perfectly round.

Should you use PTFE tape on compression fittings?

Can I Use PTFE Tape on Compression Fittings? No. PTFE tape is not designed to seal compression fittings and is ineffective at doing so.

Do you use PTFE tape on compression fittings?

How do you measure pipe mm?

To find it, measure around the circumference of the pipe with flexible measuring tape. Divide the circumference by pi, or about 3.14159. For example, if the circumference is 12.57 inches (319 mm), you would divide by pi, and get an outside diameter of about 4 inches (100 mm).

Is pipe size inside or outside diameter?

In short: Tube is measured by outside diameter, pipe is measured by inside diameter. There is often confusion as to which size die the customer actually needs – Pipe Size or Tubing Size. Keep in mind that pipe size refers to a nominal – not actual – inside pipe diameter. Schedule refers to the pipe’s wall thickness.