Join Date: Jan 2018
Location: East Central Ohio
I have a Grizzly G0548Z dust collector with a 6" intake and I also have a Super Dust Deputy cyclone incorporated into my system. The SDD made a huge difference and captures a vast majority of the collected dust before it even makes it to the dust collector, keeping the filter clean and unclogged for a very long time).
After pricing the 6" PVC drain pipe option, the HIGH cost of the fittings turned me away. Since I had a few sections of 4" PVC left over from another project I decided to run two parallel lengths of the 4" instead with 4" PVC wye's (which were much more affordable) with a blast gate and 4" flexible dust collection hose to each machine. The single 6" PVC has an area of 28.27 sq. in. and two 4" PVC pipes have a total area of 25.14 sq. in. so the overall size is quite comparable.
The Super Dust Deputy has a 6" outlet which I connected to the Grizzly with 6" flexible hose and a short piece of 6" PVC. The SDD has a 5" inlet which I connected to a 5" flexible hose and to the two 4" PVC pipes via a wye (the Grizzly came with a three 4" by 6" wye which I adapted to make work).
I have my jointer and bandsaw on one line, and my radial arm saw and a second hose that connects to my table saw, or planer (depending on what is in use). I will often run with either one or two blast gates open at a time and at times with three separate blast gates open simultaneously with great collection still maintained from each machine.
In essence, I have a collection of parts that I initially put together on a trial basis and with economy in mind, and the performance has been quite exceptional so it will likely remain as is for the foreseeable future. I am sure that with modifications I could improve the overall performance and perhaps improve the overall 'numbers' (cfm, etc.), but with the system doing everything I need it to do and more, I see no reason to output additional money that can be used for other workshop needs.
In short, the 6" PVC would likely be considered a more ideal material (check the fitting prices), but there can be a variety of other alternatives that will do the task as well - and possibly at a much more affordable cost.