Here's a video of the 3/4" pump I made from Bill's drawings. Steam and water cylinders are made from brass. The pistons and slide valves are made from phosphor bronze. Piston rods and valve rods are stainless steel. The pump is putting water into the boiler at 100 psi. All seals and piston rings are Viton. Thanks Bill for making the drawings available, these pumps are so cool!!
The only drawback to this 'arrangement' is that it is sometimes difficult to 'adjust' the valve arm actuators since the screws are up against the boiler.
However, once set (which can be done on air before installation)...they very rarely need to be moved.
Yes, the drawings are available. I believe the link is somewhere in this thread. Perhaps Bill could repost it here.
Yes, if an actuating arm loosens, or, needs adjustment, this arrangement can make it a challenge to get to the set screw. This actually has already happened to me one time. I was able to get my allen wrench behind the pump and re-tighten the screw. Not really a problem. Thanks again Bill!
Builder01 wrote: ↑Mon Sep 16, 2019 11:11 am
Yes, the drawings are available. I believe the link is somewhere in this thread. Perhaps Bill could repost it here.
Yes, if an actuating arm loosens, or, needs adjustment, this arrangement can make it a challenge to get to the set screw. This actually has already happened to me one time. I was able to get my allen wrench behind the pump and re-tighten the screw. Not really a problem. Thanks again Bill!
I missed the link but found it when I went back through. Thanks!