Flanges are welded rigid on both sides.  1/2" thick plate flanges are most common for exhaust and blower applications.  Stainless and carbon steel flanges can be fabricated with any bolt pattern in any size.

Floating flanges or vanstone flanges eliminate bolt alignment problems.  DME fabricates vanstone stub ends in stainless and other alloy materials.  Carbon steel back up flanges are an economic solution.

A unique process allows us to form a vanstone end integral with the bellows.  This eliminates a weld on one end.  The fixed flange is generally an ANSI flange and the floating flange a Caterpillar, Detroit, Cummins, etc.

By design these joints have very low spring rates.  On engine manifold applications, multi-ply expansion joints can absorb and isolate vibration and at the same time absorb certain amounts of thermal expansion.  For critical applications such as marine and co-generation, multi-ply joints are a must.

The bellows length is generally limited to 12" in length.  When a longer assembly is required, fabricated stainless steel tubes are used.  For standby applications, carbon steel tubes are available.

This assembly clamps directly to the turbo charger.  Multi-ply bellows have very low spring forces and will protect the turbo from the piping stresses.  Assemblies can be furnished with any outlet fitting required.

Universal expansion joints allow for large amounts of lateral offset that can be created by thermal expansion of the piping or misalignment.  By design the multi-ply construction will absorb and isolate engine vibration.

Reducing flanges are used at the outlet side of the expansion joint to increase the flange size.  This is an economical method to make a transition in size.

Tapered cones are also used to make an increase or reduction in pipe size.  When making a reduction, the cone creates a smooth flow thus minimizing the back pressure.

Tube ends can be furnished in any length to accommodate the installation.  Customers can easily weld their own flanges or fittings to the tube ends.  DME has tube-making equipment that allows us to furnish ends in any size, thickness or alloy.

Whether your requirement is a replacement for a factory expansion joint or one custom made to your exact length, DME can help.  5" through 14" sizes are available with floating flanges and flow liners.

Detroit Diesel, Cummins and John Deere lip flanges are available on single ply and multi-ply bellows.  DME furnishes flared tubes in carbon and stainless steel.

Schedule 10, schedule 40 or heavy wall pipe ends can be furnished in any length.

37-1/2 degree bevels are provided to facilitate welding. If bevels are not required.  Machined square cut ends are supplied.

Flange spacers are furnished in T-321 stainless steel.  Expansion Joints can economically be furnished in any length.  When a flow liner is required, spacer tubes prevent contact damage to the bellows.