Principles of Gas Flow Control Valve

Principles of Gas Flow Control Valve

The flow control valve adjusts and controls the amount of air flow within the pneumatic system. It is often used to adjust the operating speed of actuators.The machine may also be set up to function as a digital pressure regulators. Although there is a relationship between pressure and flow, it doesn’t have to be a straight line. And using a pressurized gas electronic pressure control regulator to control flow can cause energy loss and the potential for component damage.

How Does a Flow Control Valve Work?

Although there are different flow regulators. But it works on a simple basic principle. The smaller the hole or opening in the pipe The lower the airflow at a given pressure, the higher the wind will weaken. Digital pressure regulators typically have finely machined tapered stems that match the seat profile, completely sealed. resulting in no wind. This is because the gas electro pneumatic regulator is always open. A large amount of air will flow through it. until fully open Air will flow through the maximum flow rate of the device. 

A two-way flow air pressure controller controls airflow in either direction. while unidirectional devices only regulate the airflow in a single sequence. Either to the components or to the exhaust side. One-way valves usually have a throttling device to allow full airflow in the opposite direction of the throttling direction.

How do I choose a flow control valve?

Below are some factors to consider when choosing a gas flow control valve.

There are several factors to consider:

Flow control:

What is the minimum and maximum controllable flow rate required for a component or process? This will also be related to the pore size of the unit. What flow accuracy and precision is required? And how is the cycle of the process?


For a one-way fluid digital pressure regulators Is it necessary to control the intake or exhaust revolutions of the engine? Or do I have to use a two way electronic pressure controllers valve? Connection: Threaded or pressurized. Which is the best? which corresponds to other components in the system

Control method:

Is manual adjustment suitable for use? Or do I have to use a remote form?

Working environment: factors such as environment or extreme temperature Are the materials used in the construction of the gas digital pressure regulators valve limited?

Work pressure:

What is the maximum working pressure of the system or application?

Which flow control valve:

Proportional Flow Control Valve:

Directly controlled coil with microprocessor driven position control. provides precise flow control Unit offers a choice of flow proportional air valves functions (5/3; 3/2; 2/2) and selectable power parameters (4 to 20 mA; 0 to 10 V; – 5 to +5 V), flow rates up to 5000 l/min with low pressure drop.

Motorized flow control valve:

The flow control method is often different from the previous scheme – two ceramic plates with openings. flipping one over the other The unit will allow maximum flow when the opening is aligned as the doors are not aligned. Flow is restricted until the flow path is completely blocked. A synchronous or stepping DC motor allows precise positioning and flow control. Position feedback can be configured from 0 to 20mA or 4 to 20mA.

Banjo Flow Control

The units of these gas flow proportional valves are adjusted manually with a nut or screwdriver. It can be controlled in or out (exhaust) and pressing or tightening again locks the form flow control system, a self-adjusting device. These units have high flow efficiency and are suitable for panel or wall mounting. They have a control pin that will not explode when unscrewed and the control position can be locked. One-way and two-way control is available.

Typical applications for flow control valves:

Air flow control valves are typically used to control the speed of pneumatic actuators, any process that requires air flow control. especially for the quality of the finished product. A gas flow control valve with sufficient precision is required.

Known for his amazing writing and technical blogging skills, Edward Thompson is the admin of the Techenger. Joined back in 2019, after moving from San Francisco to Chicago to switch from his role of staff writer to a guest blogger. Since then, he never looked back to his past. In nutshell, he is a tech enthusiast who loves to write, read, test, evaluate, and spread knowledge about the growing technology that surrounds mankind.

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