Why do we use Proportional Needle Valves?

A proportional needle valve is used when you have Aa large range of flow rates and pressures. They can control the flow rate of liquids, gases, or slurries. They are unsuitable for liquids or viscous slurries or contain large particles. proportional needle flow control is used in applications where the flow rate is controlled by a proportional needle relationship to the valve position.

It means you can open a valve and set it to run at a certain rate, then close it and set it to close at an equal rate. You can also do this with two valves: one valve can open or close while the other keeps running at the same rate.

Uses and Operations Of These Valves

The proportional needle flow control valve is a type of safety valve. They’re typically used to prevent overpressure in a system. It can happen when, for example, you have a pipe that runs through a hill and needs to be bigger than the diameter of the pipe itself. The proportional needle valve will open wider if the pressure in the system rises above a certain level.

This way, it won’t burst open unless there is an extreme amount of pressure present—and if it does burst open, it will do so in a controlled manner that doesn’t cause damage or injury to anyone nearby.

Stepper motors: what are they?

Electronic controllers or drives can program the precise rotational speeds of stepper motors, which are brushless DC motors. Stepper motors excel in low-speed applications requiring speed and accurate position control, making them a great choice for 3D printers, robotics, and other automated systems.

Stepper motors provide superior stopping precision and responsiveness because their internal architecture eliminates several sources of mechanical and electrical “delays” that occur in other motors. Because of this, stepper motors are often the best option for synchronous and high-precision tasks.

Stepper motor operation relies on carefully sequencing the current via its coils. Kaoru’s PM series stepper motor controller is a convenient tool for doing this. Both constant voltage (L/R drive) and constant current (CC drive) are used to power stepper motors (chopper drive). For additional information, check out the latest issue of our News magazine.

An electronic device called a “driver” simplifies the control of a stepper motor by reacting to a digital step and direction signal from a controller by energizing the motor’s coils in the correct manner. Ohm’s Law and the symbiotic interaction between a rising current and inductance control all electronic circuits.

The architecture of a stepper motor’s coils implies that the current can never rapidly increase in response to pulses (command signals), necessitating very high voltage. When the current is inadequate, the torque is also inadequate, particularly at high motor speeds. Pulse Width Modulation (PWM) is used by helicopter engines to counter this (PWM).


The FC series proportional needle flow control valve from KaoLu has an ultra-fine thread that is smooth, proportional, accurate, and retains its position with a great deal of torque.

Combine it with a stepper motor for increased accuracy, faster operation, and full automation when used in conjunction with any bipolar chopper drive.

To fulfill the needs of each given application, needle valves may now be remotely located, automated, monitored, and modified. Our proportional needle flow control valve has four major benefits: system integration, very low hysteresis, low power consumption, and specific flow curve capabilities that go beyond and beyond 1000 LPM.

How do proportional needle valves work?

A proportional needle valve is a type of fluid flow control where the flow rate is controlled by the size of the orifice rather than by how much pressure is applied to it. It means that the flow rate can be adjusted simply by adjusting the size of the orifice.

The basic principle behind this type of valve is that as you increase the size of an opening, you increase the amount of fluid flowing through it. proportional needle flow control valve pneumatic allows for finer adjustments in flow rate than traditional valves, which rely on controlling pressure instead of volume.


They’re great for controlling how much water comes out at any given time, but they can also be used for other things! For example, if you have an automatic sprinkler system or irrigation system installed in your yard, then a proportional needle valve would allow you to set the amount of water that will spray from each nozzle whenever necessary.

It could save you money on your water bill by ensuring that only enough water comes out as needed so that plants don’t die from low moisture levels (or too much).

Perks To Know About These Valves

A proportional needle valve is often used in industrial processes, such as boilers, cooling towers, and manufacturing equipment. They offer many benefits over standard ball valves:


They are more reliable than traditional ball valves because they have no moving parts. The proportional needle gas flow control valve is less expensive than traditional ball valves because they don’t require springs or nylon sleeves for sealing purposes (which means less material needs to be used).

They’re easier to install than traditional ball valves because there’s no need for special fittings or tubing.

Final Words of proportional needle

A proportional needle valve is a ball valve that helps control water flow. If you think about it, this makes sense—if you want to spray water or make a cup of tea, you don’t want to let all of it out at once. You want to be able to control how much comes out at any given time. That’s where the electronic pneumatic proportional needle flow control valve comes in.

Leave a Reply

Your email address will not be published. Required fields are marked *

Back to top button