1369AB Advanced Drainage Box

The following will be a REAL review of this product, NOT "I like it" or "It works"I am cleaning (Roebic K-570), and adding to my leach field, that was installed in 1986, so the existing two leach lines have lasted 28 years.I contribute this to living in the Mohave desert, as this is unheard of in most other regions of the U.S.The Advanced Drainage Systems (ADS) Distribution box 1369AB is made from the same material as your one gallon milk jug (HDPE # 2), and is also a blow molded product, albeit, a lot thicker. The inspection/cleanout is 6" O.D. The Septic tank inlet is 5-1/4" O.D. All other side and back holes (7) are a little larger than 4" O.D.If you are not using ADS plumbing for this box, you will have to first find a product that will adhere HDPE to PVC, and that you can actually find in your area.I did tests using left over cap pieces from the 3 outlets on one side, and the back outlet (which can be easily removed with a hack saw), and pieces of 3/4" PVC irrigation line I had laying around.THE RESULTS:Clear Silicone adhesive: NOOatey Blue: NOOatey All Purpose Cement: Fair adhesion, which works fine for slip fits.Liquid Nails: YES. (I used this product as a fillet sealer on the outside (tube to box) to add flex strength, plus auto rubber undercoating as a final sealer, as I did nut trust the Liquid nails in this environment without some type of a sealer coating over it).If transitioning from the HDPE box to PVC septic lines (which most of us would do) I would recommend using 5" long cutoffs of your 4" tubes to adhere to the box outlets first, and then use straight, and 45 deg. couplers to get to your actual perforated leach lines.You will have to chamfer, and hog out the mating I.D. surface on your 4" cut offs a bit to fit over the slightly larger than 4" O.D. outlets on the box.I would also recommend using the Fernco P1002-44 rubber coupler to attach your septic 4" PVC outlet line, to the distribution box inlet, as the 5-1/4" O.D. is an oddball size. This also lets you slide the 4" line into the box first, and then back onto your line coming out of the septic tank which you can then glue in place.You will have to do a lot of prep work if using this box, and the reason I chose it, was because it had three outlets on one side, which is what I needed to add two more lines to my existing leach field.The box is a bit flimsy, but does have a good pan down to collect solids which is where a lot of (so-called) leach field failures happen; at the distribution box, not the leach lines. The box outlets will also flex 10 to 20 degrees, which makes line assy a bit easier.

First of all the distribution box was incorrectly packaged and was miss represented. After finding the correct avenue to reach customer service, it looks like the situation will be resolved. The one of six distribution boxes I received seems to be good, it's buried in the ground. I discovered the 7 distribution lines are 3", not 4" like I assumed. I was able to glue PVC 4" couplers to them with heavy duty liquid nails so I could connect the 4" drain lines.