Mainline Top-Check Upgrade Kit

Upgrade any existing Mainline Fullport Backwater Valve (Model: ML-4963) to the newly re-designed Top-Check Backwater Valve (ML-4TCP)

This kit includes everything you need to convert your valve and is very simple to install!

Kit Includes:

• Top-Check Body Insert
• Top-Check Floats (2)
• Top-Check Lid w/ manual shut-off
• Extra nuts & bolts (4)
  

Installation requires minimal experience and can easily be completed by most homeowners. Here is a link to an instructional video:

https://www.youtube.com/watch?v=zPSJ39hiQX4

Optional alarm is also available for the Top-Check Backwater Valve - (see store)