Reference
Duct fitting standards: hose fittings, S&D PVC and metal pipe
Pick a fitting standard to see how its parts join, which other standards it meets only through an adapter, and the gates and fittings made to it.
- Dust-collection hose fittings (4 in nominal)
- Sewer-and-drain (S&D) PVC, ASTM D2729
- Schedule 40 PVC, ASTM D1785
- Snap-lock and crimped metal duct
- Clamp-together duct (Nordfab Quick-Fit)
Choose your fitting standard to see the key facts and what fits. Each fact links to its source on the full page.
All fitting standards
- Dust-collection hose fittings (4 in nominal) Hose fittings are a catalog family sized to slip into or over flex hose and machine ports, not a published standard. Makers' dimensions, joins and limits.5 products that fit
- Sewer-and-drain (S&D) PVC, ASTM D2729 ASTM D2729 covers PVC sewer pipe, not dust collection. Rockler says S&D needs an adapter to meet most dust fittings; WoodRiver's adapter and its limits.1 product that fit
- Schedule 40 PVC, ASTM D1785 ASTM D1785 covers Schedule 40, 80 and 120 PVC pressure pipe. Charlotte Pipe's 4 in socket figure, Rockler's 52680 adapter and the pipe maker's limits.
- Snap-lock and crimped metal duct What our sources confirm about snap-lock and crimped metal duct: Oneida's 6 in cyclone ports are sized for crimped duct. Most details are not confirmed.
- Clamp-together duct (Nordfab Quick-Fit) Nordfab publishes literature on Quick-Fit clamp-together ducting as a distinct duct system. Its edge design and dimensions are not confirmed here.