Flow Tech International (FTI)
A needle valve has a relatively small orifice with a long,
A needle valve has a relatively small orifice with a long, tapered seat, and a needle-shaped plunger, on the end of a screw, which exactly fits this seat.As the screw is turned and the plunger retracted, flow between the seat and the plunger is possible; however, until the plunger is completely retracted the fluid flow is significantly impeded. Since it takes many turns of the fine-threaded screw to retract the plunger, precise regulation of the flow rate is possible.
Material : Cast Iron, Carbon Steel, Stainless Steel, Brass, Bronze.
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