Supporting > Engine Ancillaries

Manual/boiler feed pump valves

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Thor:
Hi Paul,

 I have made valves using both balls and O-rings and both work.

Thor

internal_fire:
This is just a classic poppet valve. It has been used with many variation for centuries.

The o-ring is relatively modern; the poppet valve is ancient.

As noted above there needs to be some clearance around the shaft, but otherwise the concept works.

Gene

PaulR:
Thanks for the replies, seems that whatever appears most suitable for the job in hand is the one to go for (although I've lost more ball bearings than o-rings so I'm coming down in favour of the latter at the minute!).

PaulR:
Another question: Is the poppet valve with o-ring in the first post likely to work ok in a horizontal orientation (with limited travel and a suitable long 'tail' to guide it)?

crueby:
If horizontal,  would want a spring to reseat it, otherwise there would be some backflow before it seated. If very low pressure like when filling the boiler at startup, the valve may not seat at all.

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