Air poppet valves (válvulas de extração à ar)
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Air poppet valves are engineered to break vacuum in molding thin-walled or deep-drawn items like flower pots, trays, and containers. For large or heavy slides, multiple air poppet valves can be employed. If you're a packaging industry mold maker designing massive pail molds, you might have utilized one. Files are accessible in .step, IGES, and x_t (parasolid) formats. A generic pail "mold" is also provided to illustrate the valve's functionality. Kudos to David Wolfe for this design: [airpoppet.com/metric-series-poppets](http://www.airpoppet.com/metric-series-poppets/) and [google.com.ar/patents/US6443421].
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