"This isn't a full bore gate valve like the one I was replacing. I guess the Pegler gate valve they sell is probably full bore and may be a better choice if maximum flow rate is important in your application. Other than that, it's a nicely made valve that works well."
"Note, these gate valves significantly reduce the diameter of a 22mm pipe (ie they are not straight through) and so are not suitable for the feed pipe to a power shower. Wish it had said this on the description!"