Straight Compression FittingsStraight connectors for use on plain joints.Manufactured to EN 1254 (formerly BS864/2), and carrying the prestigious Kitemark, Prestex type A’ compression fittings are suitable for mechanically joining copper or stainless steel tube by means of compressing a cone into a tube without the application of heat. The range is designed for use with copper tube to BS EN 1057: 1996 (formerly BS2871: part 1), BS2871: part 2, or stainless steel tube to BS4127: 1994). Fittings are available in brass, all with brass cap nuts as standard.