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Mini Ball or Poppet Valve?

Mini Ball or Poppet Valve?

Mini Ball or Poppet Valve?

(OP)
Hello:

I am looking for a miniature ball or poppet style valve that can be manually depressed. I am looking for cracking pressures under .1mbar so I can not think of any other solution. I have found duckbill valves can not offer the cracking pressure needed within the size range for my project.

I am trying to find a prefabricated poppet or ball valve assembly that would be no larger than about a 15mm diameter with a low top profile. Right now the only option that I have seen would be to build my own housing for the spring etc., which I would prefer to avoid as I would need many units.

Has anyone seen a product similar to what I have described? The ball or poppet would be manually depressed causing a gap between the sphere and the surface material allowing air to escape or enter.

Thanks.

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