Question 1

Do we just connect this to the pipe or we seal it caulk? What kind of sealant do you guys use

Accepted Answer

The flex tubes connect to this "Y" via these couplers: Flex-Drain 55020 Drain Pipe Coupler Adapter, Female to Female.  It's not a very tight connection/seal so water does leak.  I used silicone tape which helped for a few months until the tape fell off.

Question 2

I set up this system following the manufacturer's instructions/video on the website but water leaks from all 3 ends of the T/Y.  Any suggestions?

Accepted Answer

these type of tile fittings are not designed to be water tight , they were originally designed for farm field drainage ,with  some leakage , that doesn't really matter in  farm drainage.( over time they do seal up, with dirt).  If you need a water tight connection this is not going to work. They do make a connecter that goes from " field tile" to pvc  that is water proof, it is a "fernco style" fitting.(rubber with hose clamps on each end). Hope this helps!  
I my self found this particular fitting to be poorly made and threw mine away.

Question 3

What length will the vertical part of the "T" expand to?

Accepted Answer

The best I can remember it would expand to about 12" total. Solid product.

Question 4

I have new 6 inch downsprouts being installed. Will this product work it seems only for more common 4"? TY.

Accepted Answer

Flex-Drain does NOT make piping nor adapters for 6" items. Their connectors and piping deal with 3" and 4" piping/components. Seems like a lot of folks commenting here would do themselves a huge favor by going to the www.flex-drain.com website and doing some research before getting deep into the project and/or just buying and hoping that everything fits together. It's flexible plastic pipe. It's not meant to be a one size fits all type of solution, so yes, it will fail for what some want to do with it. Some of the negative comments and reviews don't seem fair. If you want to use this in a commercial or industrial environment, you might be better off utilizing solid piping solutions. The company's website isn't extensive, but it can be very helpful for the DYI folks.

ASIN	B003DRF8PO
Best Sellers Rank	#238,425 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #7,003 in Pipe Fittings
Brand	Flex-Drain
Brand Name	Flex-Drain
Color	Black
Customer Reviews	4.4 out of 5 stars 1,159 Reviews
Global Trade Identification Number	00732736537009, 00744211025277
Included Components	Amerimax - ADP53702
Item Dimensions L x W	10.16"L x 8"W
Item Length	9.4 inches
Item Type Name	Amerimax - ADP53702
Item Weight	4.32 ounces
Manufacturer	Flex-Drain
Manufacturer Warranty Description	Warranty
Material	Polypropylene (PP)
Material Type	Polypropylene (PP)
Maximum Pressure	70 psi
Outside Diameter	10.2 centimeters
Product Dimensions	10.16"L x 8"W
UPC	744211025277 732736537009
Unit Count	1 Count

Flex-Drain ADP53702 Flexible T / Y, Landscaping Drain Pipe Adapter, 4inch, Black

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