Hi
I will need to fit drain cocks to the cylinders of Conway. I came across this design for automatic drain cocks by Stewart Hart
(https://www.use.com/images/s_2/21a9445f7858f8405c0d.jpg) (https://www.use.com/21a9445f7858f8405c0d)
(https://www.use.com/images/clicklarge3.gif) (https://www.use.com/21a9445f7858f8405c0d)
Are they about the right size?
Cheers
Rich