Replacement Rubber Non-Return Valve – Compatible with All Lay-Z-Spa Models – Leak-Free Design for Enhanced Durability and Performance

So I got this stupidly thinking it would come with instructions or be relatively straightforward to install, and it probably is but I'd suggest that in order to install this you need to deflate the pool so you can push from behind the hole. I thought I'd try installing it whilst it was inflated and it just fell through to the other side and you can't get it back (obviously).My own stupid mistake, but honestly, I'd just recommend paying a few more dollars and getting the disk one which is installed in the screw fitting itself.

Based on the item listing, I expected two valves. Was delivered is a plastic bag with the stem folded nice and flat. Not sure how long the already stressed joint will have.