Rubber pipe expansion joint MAC series

roundflangefor vacuum

These are the standard moulded or custom made Expansion Joints consisting of high quality rubber body incorporating floating flanges. Rubber bellows: Reinforced EPDM, EPDM HT, Nitrile, Spec. Nitrile, Nitrile white, Hypalon, SBR, Viton®, Chloroprene, etc. Flanges: Zinc plated carbon steel as standard. Also, available in hot dip galvanized carbon steel, stainless steel, etc. drilled to EN and ANSI standards. On request, flanges are also available drilled to JIS and AWWA standards. For vacuum applications, an internal stainless steel vacuum ring is incorporated. Standard moulded construction from DN 32 to DN 1000 (see table for standard dimensions). Larger sizes can be supplied custom made up to DN 6000. A high quality moulded or custom made single arch unrestrained expansion joint consisting of a rubber bellow incorporating floating flanges. This model absorbs all the movements in any one length of piping. Unrestrained expansion joints under pressure will exert a considerable axial force on the pipeline, i.e. anchors. It is essential that checks are carried out when the expansion joint is first pressurized to ensure that there is no unforeseen stretching of the bellows. If unforeseen movement is apparent, then the pipe guides or anchors shall be examined to ensure that they have been installed correctly and sufficiently designed for the duty.