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Posted:
Wed Apr 04, 2007 11:15 amby bpowell
In the course of leak testing and using the calibrated orifice plates we found/created a problem (bruce, the test orifice plates are SWEET!). We now realize that 2" drywall screws into the edge of 3/4" particle board will not hold the cabinet together. 
During exhaust testing with the bowls closed we get a WC of ~29"! The worst section (crack/leak) is where the 45* wall (that holds the bowls), is screwed to the outer cabinet wall. Take a look at the outer surface of the cabinet...
Posted:
Wed Apr 04, 2007 11:18 amby bpowell
Here's an inside view. Time to re-seal and add additional bracing (2x2's and threaded rod). More to come.
Posted:
Thu Apr 05, 2007 4:41 pmby MMack
Thanks for the info about your findings. I will have to make sure I am braced and have the allthread in place.
How did you seal your valves/bowls? I am struggling with this right now.
Mike
Posted:
Thu Apr 05, 2007 6:09 pmby Thomas Vaught
Weren't we just having a conversation with a member about the potential of blowing out the side of a flow bench a few days ago?
Tom V.
Posted:
Tue Apr 10, 2007 12:59 pmby bpowell
I got it back together and all seems well. Internal bracing, rod support, construction adhesive and more screws, here's a visual...
Posted:
Tue Apr 10, 2007 1:00 pmby bpowell
another...
Posted:
Tue Apr 10, 2007 1:02 pmby bpowell
and another...
We used silicone to seal the bowls, ended up doing this two times to get it right. We added silicone spray to the backs of the bowls to reduce sticking.
Posted:
Tue Apr 10, 2007 5:29 pmby Thomas Vaught
BPowell, I just noticed your check valves.
Those some of the Sewage flapper valves from Home depot?
Tom V.
Posted:
Fri Apr 13, 2007 8:38 amby bpowell
Tom, we did get these at The Home Depot but we used a toilet floor mount, short piece of 3" pipe, 3" coupler and a internal 3" to 1 1/2" adapter. The adapter is flat on one side and we mounted a hand cut 1/8" rubber flap to this flat side with two screws. They actually work pretty good but might be more expensive than the sewer valves due to more parts. I would guess we had $50.00 in all four of them. Here is a picture from the outside, don't currently have any of the inside.