Macoga - Standard Moulded Rubber Expansion Joints - MAC-WT
MAC-W & MAC-WT Series
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 600 (see table for standard dimensions). Larger sizes can be supplied custom made up to DN 6000.
As MAC-W but incorporating control units/tie rod system. A control unit assembly is a system of 2 or more control rods placed across the expansion joint from flange to flange to set the maximum allowable expansion/contraction of the expansion joint and that will contain the pressure thrust. Recommended on most applications to prevent damage due to excessive pipe movements, each rod incorporates double nuts on each end to keep the expansion joint from over- elongating and spherical washers to allow Lateral, Angular and some Torsional movements as well as to accommodate moderate piping misalignments.
MACOGA holds numerous industry approvals, including:
Ministry of Defense and NATO Member Countries
