how does a needle valve work?

I want to know about a needle valve that can controll the flow one way but is non restrictive in the other direction.

2007-01-23 09:38:35 · 1 answers · asked by hit_the_set 1 in Science & Mathematics ➔ Engineering

That is not the normal use for a needle valve.
A needle valve uses a tapered pin to gradually open a space for fine control of flow.

2007-01-23 12:20:36 · answer #1 · answered by Mike1942f 7 · 0⤊ 0⤋

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