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Uses of a Needle valve

By August 31, 2020 No Comments

A  is a type of valve having a small port and a threaded, needle-shaped plunger. It allows precise regulation of flow, although it is generally only capable of relatively low flow rates Our needle valves are known for their fine and standard make in the market. It allows precise regulation of flow. It is popularly used in flow metering applications, especially when a constant, calibrated, low flow rate must be maintained for some time. It contains a thin needle with a point that fits into a conical cup.

A Needle Valve uses a precision engineered tapered pin to gradually open a space for fine control of flow. The flow can be controlled and regulated with the use of the needle. 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 precisely fits the seat for valve shut-off. When the needle valve screw is turned the plunger retracts allowing flow between the seat and the plunger. However, precise regulation of the flow rate can be controlled when the plunger is completely retracted. Needle valves are often used in vacuum systems where precise control of gas flow at low pressure is required. They are often used as component parts of other, more complicated valves systems

Small sizes of globe valves are known as needle valves, equipped with a finely tapered plug. A needle valve is a form of valve with a tiny port and a threaded plunger in the shape of a needle.

Uses:

  • Usually, needle valves are used in flow metering applications, particularly if a steady, calibrated, low flow rate has to be maintained for some moment
  • Commonly used to provide shut off for the pressure gauge or on applicators to shut off the supply of NH3 to the knives in Anhydrous Ammonia (NH3) applications.

 

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