Use in Industry
In industry, a rotary valve (which can also be called airlock) is often used to enter or extract material from two chambers with different pressure level.
As part of the material exchange process, the valve is often used as a measuring or metering device.
Read more about this topic: Rotary Valve
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“... we’re not out to benefit society, to remold existence, to make industry safe for anyone except ourselves, to give any small peoples except ourselves their rights. We’re not out for submerged tenths, we’re not going to suffer over how the other half lives. We’re out for Mary’s job and Luella’s art, and Barbara’s independence and the rest of our individual careers and desires.”
—Anne O’Hagan (1869–?)