Posts: 38,338
Threads: 0
Joined: Feb 2002
Location: Northern California
when I had my DC setup with a Y right off the DC I put a gate on each Y.
Reality is that which, when you stop believing in it, doesn't go away. - Philip K. Dick
Mark
Posts: 645
Threads: 1
Joined: Dec 2006
Seems to me in an ideal world, there would be no need to do so. Once the vacuum was created in a sealed system, it shouldn't make any difference. On the other hand, in the real world, there is no such thing as a truly sealed system so maybe there is some advantage. On a practical level, speaking as a guy who just installed a central DC, I am all the time forgetting to open or close the blast gate when moving between machines, so having one more gate in line would prove a real annoyance.
Posts: 10,606
Threads: 0
Joined: Jul 2005
Location: Front seat on the Struggle Bus
I've got an 8" Y right at the cyclone, works just fine. Besides, I'm not going into the attic to play musical dust gates.
-
Ed
My main duct branches about 2 feet from the cyclone. i do not have blast gates at the fudge , mine are only at each machine. I have not ever had a situation where I thought isolating one side or the other would have been beneficial. In fact, just the opposite is the case. I often alternate between machines and open/close blast gates without shutting down the cyclone. Sometimes I have two gates open at the same time, frequently on opposite sides of the "Y". Having to open/close the two main trunks of my system would complicate the process by adding extra steps. I don't think isolating the two sides of the main trunk is necessary or helpful. This assumes that you are not losing a lot of vacuum in trunk lines and that your cyclone moves enough air to overcome any leakage that you have in the system.
Posts: 12,462
Threads: 0
Joined: Aug 2003
Location: Wapakoneta, OH
No real reason to do so unless you have some serious leakage in the trunk lines. If these are 4" lines it probably doesn't matter at all.
I started with absolutely nothing. Now, thanks to years of hard work, careful planning, and perseverance, I find I still have most of it left.