DME

DME Expansion Joints

DME manufactures bellows and expansion joints as large as 104″ in diameter and as small as 1-1/2″. We specialize in high performance multi-ply bellows fabricated from T-321 Stainless steel, Inconel 625, Alloy X, T-316 Stainless steel and more. DME has the experience, engineering knowledge and production capability to design and fabricate unique flexible piping products to meet your specific requirements. We provide fast delivery times and on-time shipping by maintaining a large inventory. Supplying our customers with quality products in a timely manner is a goal shared by each of our dedicated employees. DME has earned a reputation for outstanding customer service and satisfaction unmatched in the industry.

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Multi-ply Bellows vs Single-ply vs Flex Hose 
Specifications 
Multi-ply Bellows 
Single-ply Bellows 
Flexible Hose 
Assembly Code 
Isolators 
Type 1 / 1L – Fixed Flange X Fixed Flange (ANSI) 
Type 2 – Male NPT Each Ends 
Type 3 – Fixed Flange X Male NPT 
Type 4 – Fixed Flange X Beveled Weld End 
Type 5T / 5P – Fixed Flange X Slotted Cuff 
Type 9T / 9P – Slotted Cuff Each Ends 
Type 10-90º Flanged Elbow X Fixed Flange 
Type 11-90º Turbo Detroit Flanged Elbow X Fixed Flange 
Type 12-Fixed Flange X Cone Increasing Fixed Flange 
Type 13/13L-Fixed Flange X Floating Flange (ANSI) 
Type 13C/13CL-Fixed Flange X Floating Flange (ANSIxCAT)
Type 28 – Flange X Spacer Flange (ANSI) 
Type 28LP-Fixed Flange X Spacer Flange (w/ Liner) 
Type 29A/29AL-Floating Flange Each Ends (Split Flanges) 
Type 30A-Floating Flange Each Ends (ANSI) 
Type 31A / 31AL-Floating Flange Each Ends (ANSI)
Type 31B / 31BL-Floating Flange Each Ends (CAT) 
Type 32LX-Fixed Flange X Floating Flange (w/ Liner) 
Type 34 – Fixed Flange X Fixed Flange 
Type 35LX – Fixed Flange X Floating Flange (w/ Liner) 
Full Flow CAT Isolators
Type 37 – Fixed Flange x Cone Reducing Floating Flange 
Type 38 – Beveled Weld End Each Ends 
Type 39 – Square Cut Tube Each Ends 
Waukesha Isolators
Type 41W/41LW-Fixed Flange X 20º Lip Flange 
Type 42W/42LW-Fixed Flange Each Ends (ANSI) 
Type 41LWX-Floating Flange X 20º Lip Flange 
Type 42LWX-Fixed Flange X Floating Flange (ANSI) 
Type 43L-Fixed Flange x 20º Lip Flange (w/ Liner & Venturi) 
Assembly Configurations 
Flanges 
Rain Caps / Rain Deflectors 
Wye Assembly 
Caterpillar Wye Assembly
Cummins Wye Assembly 
MTU Wye Assembly 

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8-29
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33-34
35-36
37-40
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39-40
  Rainshield Assembly
Roof / Wall Thimble
Insulated Roof / Wall Thimble
Non-Insulated Roof / Wall Thimble
Gaskets, Nuts, & Bolts
Clamps
Cone Transitions
Tube Elbows
Mitered Elbows
Tube Elbows w/ Tangent Ends
Exhaust Outlet Extensions
Tubing & Flex Tube
Pre-Fabricated Exhaust Systems
Style 60-Tube Assembly Flanged One End
Style 61-Tube Assembly Flanged Each End
Style 62-Flanged Tube Assembly w/ Integral Slotted Cuff
Style 63-Tube w/ Integral Slotted Cuff
Style 66-Tube Assembly w/ Fixed X Floating Flanges
Style 67-90º Tube Assembly w/ Fixed X Floating Flanges
Style 68-Flanged Offset Tube Assembly
Adapters
S/S Braided Hose Specifications
Braided Flexible Metal Hose Assembly
Type 500 – Low Pressure Fixed Flanges Each Ends
Type 501 – Low Pressure Fixed Flange X Floating Flange
Type 502 – High Pressure Fixed Flanges Each Ends
Type 503 – High Pressure Fixed Flange X Floating Flange
Type 504 – Male NPT X Beaded Tube
Type 505 – Male NPT X 90º X Beaded Tube
Type 506 – Fixed Flange X Beaded Tube
Type 507 – Fixed Flange X 90º X Beaded Tube
Type 508 – Aeroquip X Male NPT
Type 509 – Aeroquip X 90º X Male NPT
Type 510 – Fixed Flange X Aeroquip
Type 511 – Fixed Flange X 90º X Aeroquip
Type 512 – Male NPT Each Ends
Type 513 – Male NPT X Female Union
Type 514 – Male NPT X Fixed Flange
Type 515 – Female NPT Coupling X Fixed Flange
Type 520 thru 525 – Floating CAT Flg X Fixed ASA Flg
Type 527 thru Type 534 – Full Flow Flex Metal Hose Assy
Anchoring and Guiding
Thermal Expansion of Pipe Table
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