How long should a motorised valve last​

The service life of motorised valves is a key concern for many valve purchasers and water treatment engineers.

Under correct operating conditions, common motorised valves and electric actuators can achieve a lifespan of 50,000 to 100,000 cycles.

This article will look at what affects how long motorised valves last. It will discuss common reasons for failure and ways to make electric valve last longer.

What is the average lifespan of motorised valves?

1. Motorised ball valve

Average lifespan: Over 50,000 cycles.

Features: Compact design, low maintenance costs, typically longer lifespan than solenoid valves.

2. Industrial-grade motorised ball/butterfly valves

Average lifespan: 5–10 years.

Characteristics: Frequently employed in high-temperature, high-pressure applications and large-diameter pipelines.

3. Electric actuators

Average lifespan: 8 years.

Service life depends on the durability of the motor, circuit board, and gearbox.

 

Core Factors Determining the Service Life of Motorised Valves

1. Valve Body and Gear Materials

Brass and stainless steel valves exhibit longer service life.

POM and metal gears demonstrate superior wear resistance.

2. Operating Medium

Pure media free from impurities prolong the service life of electrically actuated valves.

Particulate contaminants readily wear seals, reducing valve longevity.

Corrosive media require stainless steel motorised valves; otherwise, they will significantly shorten the actuator lifespan.

3. Switching Frequency

The higher the switching frequency, the shorter the motor's service life.

4. Protection Rating

In humid environments, electric actuators with an IP65 or higher protection rating must be selected.

Inadequate protection ratings may cause the motor to become damp, thereby reducing its service life.

5. Method of Use

Incorrect installation and usage methods may subject internal components to undue stress, shortening the service life of mov valve.

 

How to extend the service life of motorised valves?

1. Regular maintenance

In water treatment systems, periodically inspect the valve body for blockages caused by impurities to prevent jamming.

2. Ensure voltage stability

Unstable voltage may burn out the motor.

3. Select an actuator compatible with the valve body

Insufficient actuator torque causes prolonged motor overload, accelerating wear.

 

Under what circumstances should we replace motorised valves?

The following conditions indicate that the motorised valve is nearing the end of its service life:

1. Excessively slow opening or closing speed

2. Inability to fully open or close

3. Overheating of the actuator

4. Frequent leakage and malfunctions

5. Severe wear of internal gears

 

Summary

High quality = Long service life

How long should a motorised valve last?

The ultimate answer depends on:

Valve materials

Actuator performance

Method of use

Frequency of use

Maintenance practices

 

If you need high-quality, long-lasting miniature electric ball valves or motorized valves, please contact Jinfeng Valve.  We will provide the most suitable models according to your requirements.