Needle valves valve designs and advantages

Needle valves are control device designs that are made with a little opening go with by a plunger that looks like an amazing deal like general sewing needle. The objective of this kind of valve is to make a means of controlling the flow of gases or liquids via the valve mechanism. It is possible to simple adjust the flow rate to any specific amount wanted, making the needle valve in a number of applications, adding engines.

The length of with the lengthened and fairly tapered plunger, a needle control device also specs a screw that in shapes into what is called as a seat. The seat is placed so that is possible to turn the screw and either decrease or increase the flow via the valve. Since the device is made so that it takes a number of turns to move the plunger, it is easy to regulate that flow with a remarkable deal of precision.

It is this capability manage flow with such exactness that makes the needle flow perfect for conditions in which the wanted flow must be maintained with little to no variance. One general use of both brass needle and stainless steel valves is with value meters where there is a need to measure perfectly the amount of power, natural gas or water that a customer has used during given billing period. At the plant level, valves of this kind are generally used to manage the flow into the system used to deliver the product to different points of place. By managing the needle control device rate, anxiety on the delivery structure is kept to be a lowest, which in turn support to improve the safety of personnel who job at different point along that system.


For engines in which carburetors are generally added, a needle valve is generally the device that helps to manage the flow of fuel into the device. This is very vital, since an extreme amount of fuel can obstruct the carburetor, and close down the engine. At the same time, a deficiency of ample fuel flowing into the carburetor will outcome in extra wear and worry on the engine over time, a factor that may lead to expensive repairs. A substitute to using a needle valve is that inclusion of what is called as float valve. In some conditions, this type of valve is also known as needle-type valve, although the design the different.

A needle control device is sometimes used in tool that manages the water temperature within a specific structure. For instance, some local water heaters use this kind of valve as a bleed type valve that makes it easy to relieve force on the water flowing via the device. As with other applications, the valve makes it easy to manage flow of water via the heater, a factor that can also help in decreasing the amount of power required to maintain an equitable supply of warm water.

While there are many benefits to using a needle valve, the general design does contain one disadvantage. Unlike other kinds of valve, there is no way to visually monitor the place of the screw or the handle used to manage the positioning of the screw and determine if the valve is closed or open.