Motor Operated Ball Valve

Motor operated ball valve is a key actuator in industrial automation control. The electric actuator drives the ball to rotate 90° to achieve the on-off, regulation and flow direction switching of pipeline media. Its core structure includes:

‌Valve body‌: Made of cast steel, stainless steel or ductile iron, the pressure range covers PN16~PN420, suitable for high temperature (-196℃~+650℃) and corrosive media;
‌Ball‌: Full-bore or V-shaped cut design, surface plated with carbide (such as tungsten carbide) to enhance wear resistance, support linear flow regulation;
‌Sealing component‌: Combination of metal hard seal and elastic valve seat (PTFE, graphite), the leakage level can reach ANSI VI level;
‌Electric actuator‌: Integrated motor, gearbox and control module, support 4~20mA signal input, suitable for explosion-proof environment and remote control.

Working principle ‌
‌Drive mechanism‌: After receiving the control signal, the motor drives the gear/worm transmission mechanism to transmit the rotational torque to the valve stem, driving the ball to rotate 90°; ‌Flow control‌: When the ball hole is aligned with the pipe, it is fully open (flow rate reaches 100%), and when it is vertical, it is fully closed (zero leakage). The V-shaped cut ball supports ±2% precision linear adjustment; ‌Signal feedback‌: The built-in potentiometer or encoder provides real-time feedback on the valve opening, and is linked with the PLC/DCS system to achieve closed-loop control.

 

motor operated ball valve

 

Applications
‌Petrochemical Industry‌
‌Scenario‌: Oil product pipelines, reactor medium switching;
‌Function‌: Corrosion-resistant materials resist sulfide erosion, and fireproof design ensures high temperature safety.
‌Electric Power and Metallurgy‌
‌Scenario‌: Boiler water supply system, blast furnace coal powder injection pipeline;
‌Function‌: Hard seal structure withstands ash erosion and supports frequent opening and closing (life ≥ 100,000 times).
‌Heating, Ventilation and Air Conditioning (HVAC)‌
‌Scenario‌: Chilled water circulation, cooling tower flow regulation;
‌Function‌: Electric regulating valves achieve precise temperature control (±0.5℃).

Common Problems and Countermeasures‌
‌Seal failure‌: Particulate media causes valve seat wear, and the sealing surface needs to be checked regularly and a spring compensation design should be selected;
‌Operation jamming‌: Grease solidifies at low temperatures, and it is recommended to use a low-temperature special lubricant or a long-necked valve cover structure;
‌Signal interference‌: Strong electromagnetic environment shields the cable, and the use of optical fiber communication modules improves anti-interference capabilities

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