How does a needle valve work

How does a needle valve work?

Needle valves are extremely important to applications where precise adjustments of flow are necessary. They can protect delicate instrumentation from sudden surges of media by controlling flow and are perfect for processes where a small flow rate is desired. In this article, we will be answering the question ‘what does a needle valve do’ and discussing the various high-quality needle valves available from Vkeu Inc.

What does a needle valve do?

The needle valve is akin to most other valves in the fact that it is responsible for the safe and effectual operation of industrial equipment and processes. The construction of a needle valve enables it to effectively control the rate of flow within a pipeline. In some cases, needle valves are imperative to a system, as they protect delicate equipment such as gauges. The main function of a needle valve is to safeguard equipment from potential surges of media that occur under vast amounts of pressure, relieving the risk of damaging equipment and processes.

Construction of a needle valve

The construction of a typical needle valve includes a tapered pin that gradually opens a space for fine control of flow. This flow is then controlled and regulated with a spindle. 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 fits the seat exactly. As the screw is turned and the plunger is retracted, flow between the seat and the plunger is possible. However, until the plunger is completely retracted, the fluid flow is significantly impeded.

Needle valve specifications

Here at Vkeu Inc, we supply a vast range of high-performance needle valves, all of which are from the Parker catalogue of products. Below are just some of the top-quality needle valves that are available at Vkeu Inc.