Posted by: Jeff Brimble "Thats Peter Fogwills copyrighted Autobrush device. "
I don't think peter fogwills has the copyright on a flow control valve.
Clear Vision i had a autobrush worked well for a while but the valve you have pictured packed up and the bristles on the brush ended up parted in the middle from brushing cills clean, also the autobrush would get caught and turn off sometimes when in use.
the autobrush is a good idea but if you can get a flow control valve ( i was lucky a friend gave me one) make your own auto brush as you will design it better for you own work. also if you make your own you can have spares and fix yourself.