Hi Guys,
Hope you can help me and the rugby club. Our irrigation system uses 2" gate valves ( 6 off), trouble is that the handles are made of Mazac this disintegrate if left wet (which happens as they are in chambers 2' under the rugby ptches). At ached is a photo of a remaining handle.
The square hole is tapered, small is about 7.65mm (Nato std round!!) to 9 mm square. It is stamped "W7"
So far the only source I've found is to buy a complete valve for about £60! and just use the handle

I need at least two. Am prepared to pay!
Question to you all: How to broach a tapered square hole

Stay safe and regards to you all
Will, Malahide Rugby Club
PS: No one has told ther grass to cocoon itself and stop growing!!