DN1600 Electric Actuator Flow Regulating Valve

Flow Regulating Valve is a valve used to regulate and control fluid flow. It adjusts the fluid flow through the valve by changing the size or shape of the flow channel, thereby achieving precise control of the flow. Depending on the application requirements, the flow regulating valve can be manual or automatically controlled. Automated flow regulating valves are usually equipped with an actuator, which can receive signals from the control system and automatically adjust the opening of the valve to achieve remote control and precise adjustment of flow.

What is the function of the flow regulating valve?

The flow regulating valve has multiple functions in the fluid control system, including:

Adjust flow: The main function of the flow regulating valve is to control the fluid flow by adjusting the opening of the valve to meet process requirements. It can control the fluid flow within the set range and keep the system running stably.

Stable system pressure: In many fluid systems, stable flow often means stable pressure. By controlling the flow regulating valve, the pressure fluctuation of the system can be effectively stabilized to ensure safe and reliable operation of the system.

Energy saving and consumption reduction: Through precise flow control, the flow regulating valve can avoid unnecessary fluid waste, thereby achieving the effect of energy saving and consumption reduction.

Prevent overload: In some situations where equipment needs to be protected, by controlling the flow regulating valve, the equipment can be prevented from being overloaded due to excessive flow or pressure, thereby protecting the safety of the equipment.

Several driving methods of commonly used flow regulating valves:

There are various driving methods for flow regulating valves. Depending on the application requirements and site conditions, common driving methods include manual, electric, pneumatic and hydraulic. Each driving method has its unique advantages and applicable scenarios.

These driving methods are introduced in detail below:

Manual drive

Features:

– Manually adjust the valve core position through the handwheel or handle to control the flow.

– Simple structure, low cost, no need for additional power or gas source support.

– Suitable for occasions where the flow rate changes slightly and frequent adjustments are not required.

Applicable scenarios:

– Small equipment or systems with little flow change and low operating frequency.

– Places without power or gas supply, or environments where on-site maintenance is convenient.

Electric drive

Features:

– Driven by an electric actuator, the valve core position is adjusted by the motor to achieve automatic flow control.

– Can be connected to the control system to receive control signals (such as 4-20mA or 0-10V) to achieve remote or automatic control.

– Rapid response and high control accuracy, suitable for occasions requiring fine flow adjustment.

Applicable scenarios:

– Working conditions that require remote or automated control, such as industrial process control systems and building automation systems.

– An environment with sufficient power supply.

Pneumatic drive

Features:

– Driven by a pneumatic actuator, using compressed air as the power source, the position of the valve core is adjusted by controlling the pressure of the air source.

– Fast response speed, suitable for frequent switching situations.

– Pneumatic actuators are intrinsically safe (no risk of sparks) and suitable for use in flammable and explosive environments.

Applicable scenarios:

– Petrochemical, natural gas processing and other occasions where explosion protection is required.

– Control systems that require fast response, such as rapid switching or emergency shutdown applications.

Installation notes:

Installation location:

The flow regulating valve should be installed in a location that is easy to operate and maintain, and ensure sufficient surrounding space for easy disassembly and maintenance.

Pipe cleaning:

Before installation, ensure that there are no impurities and welding slag in the pipeline to prevent debris from entering the valve body and damaging the valve core and seals.

Flow direction matching:

Ensure that the installation direction of the valve is consistent with the flow direction of the medium. Usually there is an arrow marking the flow direction on the valve body.

Sealing:

Make sure all connections are well sealed to prevent leaks. For flange-connected valves, the bolts should be tightened evenly to avoid uneven stress.

Maintenance and care:

Regular inspection:

Regularly check the working status of the seals, valve core and actuator of the flow regulating valve. If any wear or aging is found, replace it in time.

Cleaning and maintenance:

Keep the valve body and surrounding environment clean to prevent debris from entering the valve. For valves that have not been used for a long time, they should be operated regularly to prevent the valve core from getting stuck.

Lubrication and maintenance:

For the mechanical transmission part, regular lubrication and maintenance should be carried out to ensure the flexibility of valve opening and closing.

Actuator maintenance:

For automatically adjusted flow regulating valves, the electrical and pneumatic systems of the actuator should be checked regularly to ensure the accuracy of the control signal and execution response.

Troubleshooting:

Abnormal flow:

If abnormal flow is found, check whether the valve core is stuck or worn, and check whether the feedback signal of the actuator is normal.

Leakage problem:

If a valve is found to be leaking, you should check the integrity of the seal and confirm whether it is installed correctly.

Noise or vibration:

If abnormal noise or vibration occurs, you should check whether the installation of the valve is stable and whether the movement of the valve core is smooth.