Installations with tube, valves and fittings can last up to 15 or 20 years, which leaves a long stretch between replacement or updates. Here is our guide on correctly identifying pp compression fitting. The importance of pp compression fitting identification Engineers check these systems in order to update or maintain that it will need to correctly identify the compression fittings used within the system. It is vital that the fitting is made from the same material to ensure consistency and efficiency. The areas for concern are: material, size, thread and manufacturer. Key Signs Of Positive Identification It is important to remember that large brand manufacturers of compression fittings all have clear identification marks imprinted onto their products. This is to avoid the dangers of interchangeability, as well as to highlight an excellently designed and capable fitting. The random mixing of fittings and components, including nut and ferrule, is not recommended under any circumstance. Usually, the ferrule inside a fitting will not give you any means of identification. It is much more common to find markings on the nut of the fitting or at the body. This will include a cast code to enable material traceability. The fittings include a three-letter cast code on all compression nuts as standard. For the collar on the body or nut, the metric range is indicated (MM.) Bodies of a tube fitting will also come marked with the full 3 identification tags – logo or initial marking, metric range and three-letter cast code.
