Macoga MRU are rectangular metallic expansion joints featuring U-shaped convolutions and rounded corners. They are specified for ducting and rectangular ductwork where absorption of thermal movement is required in non-standard cross-sections. Each unit is engineered to order based on duct dimensions, design pressure, temperature, and required movement.
MRU series is designed for low and medium pressure service, as well as full vacuum applications. End connections are available as flanged or weld ends, depending on the mechanical layout of the duct system.
MRU joints are unrestrained types. They do not absorb pressure thrust; therefore, main anchors, directional anchors, and alignment guides are required in the piping system.
MRU joints are not intended for correcting misalignment. Prior to installation, check nameplate data, convolution cleanliness, gaskets, guides, and anchors. Remove yellow transport bars before pressure testing; for hydrostatic tests, use chloride-free water.
Is it suitable for high pressure?
Not as a standard application. The series is intended for low/medium pressure and vacuum service.
Is an actuator required?
No. The joint operates passively, responding to duct movement.
Rectangular expansion joint with U-shaped convolutions and round corner
One or more convolutions for low and medium pressures and full vacuum services. The connection elements are available either with flanges or welding ends.
Rectangular expansion joint with U-shaped convolutions and round corner.
MACOGA holds numerous industry approvals, including:
Ministry of Defense and NATO Member Countries
