Bernard electric actuator controls flange cast steel ball valve

Bernard electric actuator controls flange cast steel ball valveQ941F-16C DN150

InstallWhen using Q941F-16C DN150 electric ball valve, it is important to pay attention to the following issues:

1、 Preparation before installation

environment check‌

Ensure that the installation area is free of highly corrosive gases, flammable and explosive substances, and the temperature is within the allowable range of the electric actuator (usually-20℃~60℃）。

To avoid long-term exposure of valves to direct sunlight or rainwater, it is necessary to-Install protective covers when necessary.

Pipeline cleaning and alignment‌

thorough-Bottom blowing of pipelines to remove impurities such as oil stains, welding slag, rust, etc., to prevent clogging of valve cores or scratching of sealing surfaces.

The pipeline axis should be kept concentric with the valve flange, with a deviation not exceeding1.5mm， Avoid stress concentration causing leakage.

valve inspection‌

Check the valve model（Q941F-16C DN150) and markings, confirm that the valve is intact and undamaged.

Manually operate the valve to fully open and close several times to verify that the ball rotates flexibly without jamming, and that the sealing components are normal.

2、 Installation process

flange connection‌

Remove the flange protection covers at both ends of the valve and flush the valve holes with the valve fully open to ensure internal cleanliness.

Place the valve on the pipeline, align the flange with the pipeline flange, and insert a sealing gasket (such as a metal wrapped gasket) that meets the design requirements.

bolt tighteningUse diagonal symmetry to gradually tighten the bolts 3-4 times to avoid flange deformation caused by excessive tightening on one side.

ZThe final torque of the UI must comply with the valve specifications (DN150 flanges usually need to be executed according to the standard torque table).

Installation of actuator‌

The electric actuator should be installed upright (with the driving device facing upwards) to ensure a stable connection with the valve.

Connect the power cord（220V/380V) and control signal line (4-20mA), use waterproof connectors to prevent moisture from entering and ensure reliable grounding.

3、 Commissioning after installation

Functional Testing‌

Operate the electric actuator to open and close the valve, and verify the action time (e.gDoes 15 seconds/30 seconds/60 seconds comply with the setting.

Check that the valve is fully open/The sealing performance of the fully closed position should be close to zero leakage (in accordance with ANSI B16.104 Level 5 standard).

leak detection‌

Slowly apply pressure until1.5 times the working pressure, hold the pressure for 5 minutes, and check for bubbles at the flange and packing box with soapy water.

Minor leaks can be tightened with bolts or replaced with seals; Serious leakage requires disassembly and repair.

4、 Long term operation and maintenance

Regular lubrication and cleaning‌

eachApply lubricating grease to the valve stem threads for 6 months to reduce wear.

Qing-Remove dust from the surface of the actuator to prevent overheating of the motor due to poor heat dissipation.

Establish and maintain archives‌

Record installation dates, debugging parameters, and maintenance history to provide data support for subsequent maintenance.

Develop a plan-Preventive maintenance plan, regularly replace vulnerable parts such as seals and batteries.

5、 An-Full precautions

Electrical safety-All in all

Cut off the power before wiring and check the voltage level of the actuator (e.gMatch AC220V/380V with the power supply to avoid burning out the motor.

Grounding wire is necessary-Reliable connection is required to prevent the risk of electrical leakage.

Operation safety-All in all

Do not use the valve stem or handle as a lifting fulcrum to prevent valve damage.

Manual operation is prohibited during power on to avoid equipment damage or personnel injury caused by misoperation.

6、 Common problem avoidance

Impurity blockageThoroughly clean the pipeline before installation to prevent particles from entering the valve chamber.

Flange leakageTighten the bolts evenly and use a torque wrench to control the force to prevent deformation of the sealing surface.

Electrical malfunctionCheck the power supply voltage (220V/380V) to avoid overloading and burning out the actuator.

By following the above steps, it can be ensured thatQ941F-16C DN150 electric ball valve operates efficiently, reducing leakage risks and extending service life. ‌‌‌

Bernard electric actuator controls flange cast steel ball valveQ941F-16C DN150