What Are the Types of Proportional Needle Valves?

Proportional needle valve equipment uses a series of needles connected to a float and a spring. The float moves up and down with water pressure, which controls how much water is released through the needle. This system is called proportional because it allows you to adjust how much water comes out of your pool. Well! Read on the types of the proportional control water flow valve now. 

Types of Proportional Needle Valves - You Should Know

There exist several types of flow control solenoid valve tools. They're used in a variety of industries, including manufacturing and construction.

Disk Valves

The most common type of proportional needle valve is a motor-driven piston (also called a disc valve). This type of valve uses a piston driven by an electric motor to move up and down. The electric motor also drives a mechanical linkage that opens or closes the valve, depending on the pressure in the system.

Balanced Needle Valves

Another type of proportional needle valve is the static-type valve, which uses a spring-loaded plunger to open or close the valve. The main difference between this kind of valve and other types is that it does not use an electric motor; instead, it uses gravity to move the plunger back up into position after each opening or closing cycle.

Unbalanced Needle Valves

Unbalanced high pressure flow control valve work quite differently than their positive counterparts. In these valves, the flow rate is directly proportional to the pressure differential across the valve—the smaller that differential, the higher the flow rate.

How do These Needles Valves' Systems Work?

A proportional needle valve system is a type of hydraulic control system that uses a common shaft to actuate both the flow control and the position control functions. The common shaft consists of a rotary joint between two cylinders, with each cylinder having a piston connected to one end of the shaft. It is typically used in heavy-duty applications where high flow rates are required. 

When the valve is closed, the flow rate through each cylinder is equal but opposite from one another; when open, each cylinder does not affect its volume. The angle between these two cylinders determines how much force will be applied to each piston when activated by the common shaft. This force can be used to move elements in or out of position or change their flow rate.

Benefits of Proportional Needle Valve

An internal safety relief electronic flow control shuts off if there is too much pressure in the system, which could cause it to burst open or blow out. It has multiple pressure switches, so you can easily change settings on the valve. The flow rate can be changed by moving a lever on the control box. Turning a dial on the control box can also change the flow rate.

Final Thoughts

Pneumatic needle valves are the most common type. In these valves, the flow rate is proportional to the pressure differential across the valve. The higher pressure differential will cause a higher flow rate, while a lower differential will result in a lower flow rate. Well, if you are someone looking to control the temperature within a flow or in a particular place, you should try these valves.