TP34 Waffle Body Pneumatic Hydraulic Test Plug Inflatable with Air or Water, 3 to 4 Inch

Worked well, delivered faster then listed, passed plumbing inspection. Was easy to use with a simple bike pump.

Well built. Heavy duty. Does what it says. Seals very well. Like the included retrieval strap and handle. Used with VIAIR (00016 6' Portable Compressor Air Extension Hose https://smile.amazon.com/gp/product/B00ELJD0BW/ to block septic tank 4" output pipe while fixing hole in a downstream fitting. A little hard getting around the corner in the T from the filter pipe section into output pipe. Found it helped to squeeze some air out of the plug then capping the air hose to hold it slightly flatter for insertion. For use with the air hose, removed the guts from the plug's schrader valve. Even though the hose has the piece to open the valve, I wanted to be sure it couldn't be accidentally locked in place somehow. The hose has no place to install the valve at the pump end. Therefore... - Connected hose tight to plug. - Squeezed plug to flatten a little and capped with a regular schrader valve cap. - Inserted into down into filter pipe and 90 degrees through T into output pipe. - Removed cap and Inflated with bicycle pump just enough to grab plus a couple of extra pumps. - Folded the hose and pinched HARD while disconnecting pump and capping with the valve cap. - Made the downstream repair. - Removed cap to deflate then removed plug. Hint: When done, replaced air hose cap then soaked the whole thing in Clorox Cleanup (could use bleach) for a few hours, swished it around in a bucket, then rinsed. I don't know for sure, but figured it would probably not hurt the rubber.

Great plug! Use to block off sewers and test waterproofing. Only minor thing which isn’t even really a problem is it’s difficult to pump up for minor works such as testing waterproofing in shower trays. Must be due to the ungodly amount of pressure you can put into this little plug. 57psi is insane! Holds sewer lines with a huge amount of head with no problems. Highly recommend!

I needed to insert it 20 ft down the pipe. Attached 1/2 inch pex pipe with a hose clamp to it and pushed it in without any problems. Pumped it to almost 40 psi through 1/4’’ plastic hose and it worked flawlessly. Just to be sure I could deflate it I removed the Schroeder valve from it and left only the one attached to the very end.

Once I received it I realize it was something else. That was my mistake, description of product is correct. Nevertheless I returned it with no issues.. happy with this transaction and will continue to buy products from amazon for this very reason.