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๐ Connect Like a Pro, Dust-Free Flow!
The POWERTEC 70170 5โ to 4โ Reducer Dust Collection Fitting is a high-quality ABS plastic adapter designed to connect 5-inch dust collection ports to 4-inch hoses. Its non-threaded, tapered design allows for quick, secure installation, making it ideal for optimizing dust extraction systems in woodworking environments. Lightweight yet durable, this fitting ensures efficient airflow and compatibility with various tools and dust collection accessories.






| Size | 5โ to 4โ |
| Material | ABS Plastic |
| Brand | POWERTEC |
| Color | Black |
| Item dimensions L x W x H | 4.8 x 5 x 5 inches |
| Connector Type | Reducer |
| Exterior Finish | Black |
| Thread Type | NPT |
| Item Weight | 0.35 Pounds |
| Number of Pieces | 1 |
| Global Trade Identification Number | 00709619853471 |
| Manufacturer | POWERTEC |
| UPC | 709619853471 |
| Model | POWERTEC 70170 5โ to 4โ Reducer Dust Collection Fitting, ABS Plastic (Black) |
| Item Weight | 5.6 ounces |
| Product Dimensions | 4.8 x 5 x 5 inches |
| Country of Origin | Taiwan |
| Item model number | 70170 |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | 70170 |
W**T
Excellent fitting upgrade for my Super Dust Deputy
I installed a Super Dust Deputy Deluxe a couple months ago (4โ inlet, 5โ outlet, model just before Oneidaโs recent design change) and used this to replace the 5-to-4 reducer it came with. The Powertec reducer is stronger, stiffer, and has longer flanges. It fit maybe just a tad looser in the outlet opening than the cheap one supplied with the Dust Deputy, but since it was going to be caulked in anyway, it didnโt matter. A bead of silicone caulk around the 5โ opening end and another just below the midpoint lip in the fitting and itโs solid as a rock in the Dust Deputy outlet opening. No issues getting my 4โ hose to the fan inlet onto the fitting. Really satisfied and glad I upgraded the original reducer.
W**G
Fit was exactly what I was looking for
Used this adapter to adapt a 5" filter opening to my 4" dust collector hose. The fit was very good and the materials used seem nicely robust.
D**K
Works perfect for reducing 5โ flex hose to 4โ DWV PVC
Worked perfect for reducing the 5โ flex hose running from the intake on my dust collector to the 4โ DWV PVC I have run throughout my wood shop. Noticed a major improvement in suction throughout the shop as compared to using the 5โ to 4โ Y adapter that came with the dust collector that went on the intake.
F**E
Does as advertised
Does exactly as it was made to do. I guess in this day and age where 80% is the new 100% it deserves a 5 star but its a piece of molded plastic with 2 different diameters. Not criticizing Powertech, but a simple product calls for a simple rating.
A**R
Good Product!!
Good Product!!
W**R
Inside diameter
Product diameter inside was not large enough needed to have an inside diameter of 5 in
D**T
Works as advertised
I needed a reducer for a European wood working machine and this works OK with a small adjustment to make it fit.
C**3
Reducer
Work
Trustpilot
1 day ago
2 weeks ago