Supporting > Engine Ancillaries
Manual/boiler feed pump valves
PaulR:
I've made a few small hand-operated pumps in the past (and one for a pumping engine that never came to completion :'( ), all using bronze or stainless ball bearings as valves which seemed to work ok although it's hard to know how effectively they're seating. I've recently noticed this type with a 'mushroom' and o-ring, loosely constrained in a tube and with limited headroom. Has anyone used this type of valve before and if so how does it compare?
Seems to me they might behave more predictably and would be easy to make when the right sized ball can't be found because the last one decided to hide under the bench or somewhere else in a 10 foot radius!!
Michael S.:
I also think that these valves are better than ball valves.
But the valve needs chambers where the water can pass through. And this type of tail unit lifts the plate evenly. And ideally always a little twisted.
Michael
PaulR:
Thanks for that. In my quick sketch I forgot to show that I was thinking of putting slots (forming a cross) on top of the valve so water can pass by when it's right at the top of the chamber.
tghs:
it could also be bored (not through) and a ring of small holes added.. :cheers:
PaulR:
--- Quote from: tghs on January 07, 2025, 01:04:27 PM ---it could also be bored (not through) and a ring of small holes added.. :cheers:
--- End quote ---
Yep, I've done a 'tea strainer' effect before. Any thoughts on this style versus ball bearings?
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