Why do we use Proportional Flow Control Valve?

Pressure regulators are used to controlling the pressure of a system that is under pressure. A proportional Flow Control Valve is a type of valve that controls the flow of liquids, gases, and steam. They work by sensing the pressure in the system and then adjusting their flow rate to maintain a desired or set pressure. In this post, we will know some uses and perks of these proportional flow control equipment. Read on.

What are Pressure Regulators? – An Overview

A proportional flow control valve (PFCV) is a special control valve that controls fluid flow in response to input pressure. The PFCV can be used on its own or in combination with a displacement control valve, but it’s most often used as part of a two-way check valve system. A two-way check valve has two separate ports for fluids to flow through. When the pressure difference between these ports is zero, both ports are open simultaneously; when the pressure difference between them exceeds zero, only one port is open at a time.

The electronic pneumatic proportional flow control valve work by measuring the pressure at the entrance to the line and then opening or closing the port with a movable gate. This gate can be opened or closed by controlling the size of the port opening about the pressure difference between ports. The higher pressure can cause damage to your system if it exceeds safe limits. When there is a high-pressure differential between two ports, like when one is pressurized, and another is under a vacuum, the Proportional Flow Control Valve will close both ports equally, reducing flow. The smaller differential between ports allows for more flow through these valves.

Know the Use of these valves

This kind of system contains two types of fluid control valves: an isolation valve and a check valve. The isolation valve allows pressurized liquid to pass through when there is no differential pressure across its ports; it prevents reverse flow by closing off when there’s too much pressure on either side. The check valve allows pressurized gas to pass through when no differential exists. The proportional flow control valve has a small restriction in the opening, which allows the flow to pass through the valve at a slower rate. It means that the flow will be smoother and less variable, which can be useful for maintaining a constant or even slightly increased flow.

Benefits of Using These Valves

The flow adjustment valve is a type of flow control valve which automatically adjusts its closing speed as the pressure difference between it and the source increases. This type of valve is cheaper and easier to install than many other valves, but its performance may not be as good. The flow valve main advantages are its low cost and ease of installation, which makes it an attractive option for many different applications. The proportional flow control valve has been used in high-pressure and low-pressure applications. It can handle pressures up to 4500 psi, while most other valves have a maximum operating pressure of 3000 psi.

Final Words

A proportional Flow Control Valve (PFCV) is a kind of flow control solenoid valve that can reduce the system’s pressure loss. It is mainly used for pressurized water and air systems. PFCV has two main types: ball and disk. Ball PFCV uses balls to control the flow, while disk PFCV uses disks to control the flow. 


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