If the 300 is going to be on the same system, you should consider using 1/2 inch valves instead of the one inch valves. The reason is in the adjustment of the valves. The one inch valves were going to have to all be closed down halfway, and then some (you will have less than 45 degrees of adjustment in the handle). In half inch valves you will have 90 degrees.
The one inch valves will still work. Getting it all adjusted will be tricky though.
The one inch valves will still work. Getting it all adjusted will be tricky though.
