GROHEWaste Set with Push-Open Plug for Washbasins with Overflow, Chrome, 65807000

Fitted a new basin and opted for this as a replacement for the cheap trade basin pop up waste that came with it. Once figured out (with a bit of help from the Q + A- thanks) this is actually a really good design where the bottom section which your trap screws onto, is tightened from the top with a hex screw.You need to follow the technical drawing on the Grohe website for this product. What really confuses matters are the photographs of the product where the hex screw head features at the bottom. This inverts so you tighten it from the top. I used a bit of plumbers mait and a washer for the top part, and plumbers mait on the seal at the bottom as well. Whether this is needed, I don't know, but all installed and no leaks.

I was a bit worried about all the bad reviews but trust Grohe so took the plunge on TheGROHE 65807000 pop waste. No idea why people complain… sure there’s no instructions but it’s not hard to figure out. Can only go one way really. There’s no top washer but you don’t need one! I did put a tiny dab of silicone around the top insert, a washer would stop it being flush! I give it 4 as there was no instructions but guess I could give it 6 for the same reason! Looks and works great. Took no time to fit, in fact it took way longer removing the old one than it did popping this in.

This is an excellent model but the fitting diagram is terrible. However I worked it out and it is working properly.