ISO 9001:2015  ·  AS9100D  ·  UL 508A listed panel capabilities

Line card · Silencers & exhaust accessories

Heavy-duty exhaust components engineered for extreme heat and built to deliver uncompromising quality.

Silencers, connectors, elbows, rain caps and stacks in carbon, stainless and aluminized steel — every nominal size from 2 to 32 inches, out of one 65,000 sq ft plant in Louisa, Virginia.

Fabricated exhaust stacks with flanged ends staged for shipment
Flanged stacks and outlet extensions, staged for shipment
Nominal sizes
2″ – 32″
Attenuation range
15 – 40 dBA
Plant
65,000 sq ft
Campus
32 acres

01 · Silencers

Four grades, one measurement.

Grades are specified by insertion loss in dBA. Pick the band that meets the site's noise limit — the ranges below overlap, so the same job can often be met by more than one grade.

10 15 20 25 30 35 40 45
Industrial15–20 dBA
15–20 dBA
Residential20–25 dBA
20–25 dBA
Critical25–32 dBA
25–32 dBA
Hospital32–40 dBA
32–40 dBA
Scale: attenuation in dBA Nominal sizes 2″ – 32″ in carbon, S304/S316 stainless and aluminized steel.

Configurations

Low-profile, disk and cylindrical bodies, including specialized geometries for enclosure installations where clearance is tight.

Silencers and exhaust components on the Duravex shop floor
Fabrication floor, Louisa, VA

02 · Exhaust accessories

Everything between the engine and the outlet.

Six families, all built in the same shop, to the same sizes and materials as the silencers — so a full run ships as one package.

A

Bellows, flex and wye connectors

Absorb thermal movement, dampen vibration and reduce stress. Flanged and other connection options.

B

Elbows, cones and fittings

Short and long radius, 45° and 90°, formed and mitered. Concentric and eccentric reducers and expanders.

C

Outlet extensions and stacks

Straight tube with flanged, cuffed or plain ends. Test ports and lifting lugs.

D

Rain caps, rain guards and thimbles

Heat dissipation and weather protection for vertical and horizontal discharge configurations.

E

Flanges, gaskets and NGB kits

ANSI, OEM and custom-style patterns, with the matching hardware available.

F

Brackets, clamps and supports

Packaged hardware to simplify installation on site.

3D CAD model of an exhaust accessory package including rain cap, elbow, flanges and bellows
3D CAD package — rain cap, elbow, flanges, bellows
Large mitered exhaust elbow with flanged ends, finished in high-heat black
Mitered elbow, high-heat black finish

03 · Shop capabilities

The same shop builds both lines.

Sizes, materials and processes below apply to silencers and accessories alike.

Nominal sizes
2″ to 32″ across every silencer and accessory
Core metals
Carbon steel, S304 / S316 stainless steel, aluminized steel
Finishes
Thermal-rated high-heat black paint; powder coat options
Welding
Certified MIG, TIG, spot, stud and cobot welding
Forming & cutting
CNC press brakes, fiber laser cutting, CNC punching, shearing
Engineering
Turnkey engineering with 3D CAD modeling and design support
Certifications
ISO 9001:2015, AS9100D, UL 508A listed panel capabilities

Quality

Aerospace protocols, exhaust parts.

Our AS9100D certification requires us to manufacture every part to the same inspection protocols required by the aerospace and defense industries: 100% material traceability, mandatory First Article Inspections, and a zero-defect production standard.

  • Quality work
  • Clear communication
  • Dependable execution
  • Practical planning

Contact

Send us the spec.

Drawings, a noise limit, or just a size and a grade — we will take it from there.

Sales inquiries

Send us a message

540-967-1060

Plant

119 Jefferson Highway
Louisa, VA 23093