Motorized Ball Valve
Motorised Ball Valve
※ Size Range: 2″-24″
※ Class Range: 150LB-2500LB
※ Fire Safe Design
※ Anti Static
※ Anti blow-out
※ Motorised Ball Valve Manufacturer
Introduction
Motorized Valves are also referred to as Motor Operated Valves. These valves are typically driven by electric motors that are controlled by electric signals sent from a nearby panel (local control) or a control room (remote control). These motors include torque- or position-controlled limit switches that turn them off when the valve is fully open or closed.
In Simple words, motorized ball valves are ball valves that are powered by an electric motor instead of a manually operating valve. These motorized valve controllers are widely employed on huge or high-pressure valves, or where automation of the plant, unsafe access circumstances, or big size or high-pressure valves need their employment.
Depending on the kind of valve, motorized valves frequently require various actuator functions. Ball valves, for example, open and close by spinning a ball. Actuators for these valves simply need to spin 90 degrees to open or close completely. These are known as “quarter turn” actuators. Different types of actuators are needed for valves that work in linear motion, such as globe, gate, and diaphragm valves. Because achieving linear motion directly might be expensive or inaccurate, linear motion is often accomplished using an electric motor turning a jack screw. Several complete rotations may be necessary to open or shut the valve, depending on the pitch of the jack screw and the linear stroke. Multi-turn motors are used to control these kinds of valves.
We produce and sell technically advanced Motorized Ball Valve that is well recognized in both domestic and foreign markets. We have established ourselves as one of the leading Motorized Ball Valves Manufacturers in China. Our Motorized Ball Valve is constructed using advanced components that ensure its energy-saving capability. Motorized Ball Valves are simple to use and require little maintenance. Due to its strong design, Motorized Ball Valve ensures a long-lasting service life.
What is Motorised Ball Valve?
When automated valve control is required, motorized valves—also known as “actuated valves” are employed. In contrast to manual valves, which need the user to operate a handle or gearbox, motor-operated ball valves open and shut the valves automatically by activating an electric motor in response to a control input signal. The integration of a ball valve with an electric motor is called an “electrically actuated valve.”
The valve and operator must be able to connect together for the device to be motorized. The mount is often included as part of the valve body casting, enabling the valve body (and separately cast mounting pad) to be mechanically installed to the actuator. Direct mounting valves are automatic ball valves that have the mounting pad built into the casting itself.
Valve and operator manufacturing companies use a common mounting design to guarantee their products can bolt together. ISO 5211 is the most widely used mounting standard. This standard specifies bolt-hole designs and sizes for various-sized mounting pads.
Electric actuators come in a range of voltages and torques. We provide electric actuators in both AC and DC, with torque ranges ranging from small electric operators to the most powerful electric motors required for large valve diameters. Most actuators are built to a certain voltage, such as 24VDC or 120VAC. As the name indicates, multi-voltage controllers monitor the input voltage and alter the internal voltage correspondingly.
Construction: Motorised Ball Valve.
In this section, we will take a short look at the various components used in the construction of motorized ball valves, which allow the valve to function efficiently in all operating situations.
- Driving Motor: The majority of the time, reliable asynchronous 3-phase AC motors are utilized as the driving power; however, single-phase AC or DC motors may also be employed in specific situations. These motors are designed specifically for valve automation because they deliver stronger torques when it is at a stop position than equivalent conventional motors, which are required to dislodge stuck valves. The actuators are designed to function in harsh environments, although they are not often utilized for continuous operation due to significant motor heat accumulation.
- Gearing: To decrease the high output speed of an electric motor, worm gears are frequently employed. This allows for a large speed reduction within the gear assembly, resulting in the low efficiency sought for actuators. As a result, the gear mechanism is self-locking, preventing unintentional and unwanted movements in the valve position by operating on the valve’s closing mechanism. This function is especially important for multi-turn operators that are axially loaded with the valve disc’s weight.
- Valve Attachments: In the valve attachment, there are two components. The first is the flange, which is employed to securely attach the actuator to its equivalent on the valve side. The size of the flange needed increases with the amount of torque being transferred. The second component is the output drive design employed to deliver torque or force from the operator to the valve shaft. There are many different valve attachments, just as there are many different valves. The dimensions and design of the valve mounting flange and valve attachments are specified in the EN ISO 5211 specifications for part-turn actuators.
- Actuator Controls: Inside the actuator controllers, both the actuator signals and DCS operation directives are handled. A PLC or other external controllers could handle this job. Modern actuators include built-in controllers that instantly facilitate local signal processing. The switches needed to regulate the electric motor are also part of the controls. Alternating circuits or thyristors are two options, and as they are electrical components, they are not affected by mechanical wear. Switchgear is used by controls to turn on or off electric motors in response to signals or commands. The DCS must receive feedback signals from the actuator controls, such as when the valve has reached its final position.
- Electrical connections: The electrical connection is connected via the motor’s supply connections as well as the signal wires used to deliver orders to the actuator and feedback signals regarding the actuator’s status. Plug-and-socket connectors are the optimal design for the electrical connection. The wiring may be readily detached and re-joined for maintenance needs.
- Limit and Torque Switches: The torque switching monitors the torque produced in the valve, whereas the limit switching detects the movement and indicates when it reaches the end position. A similar signal is used to indicate going above a certain limit. Actuators are frequently fitted with a remote position transmitter, which sends a constant current or voltage signal indicating the valve position.
- Manual Operation: The majority of electric actuators come with a hand wheel as part of their basic design, which may be used to operate the actuators during commissioning or power outages. When the motor is running, the hand wheel does not move.
Working: Motorised Ball Valve.
The valve can be operated manually, semi-automatically, or automatically using electric motors. Despite their ability to place the valve anywhere in its cycle, motors are often utilized for open-close operations. Typically, the motor is a bidirectional, high-speed form that is coupled through a gear system to lower the motor speed which results in increased torque at the stem. In the case of a ball valve, the direction of motor rotation dictates the direction of ball motion.
Semi-automatic electrical actuation is possible, such as when a control system starts the motor. The valve may also be manually operated by turning a handwheel that can be attached to the gear train. Limit switches are typically included to automatically stop the motor when the valve is fully open or fully closed.
Types: Motorised Ball Valve
Motorized ball valves are often used to fully open or close a channel, however, in some applications or systems, these valves are also used to regulate the flow. In this section, we will go through these two categories in depth.
- On/Off motorized valves go from totally open to fully closed with no stops in between. Internal cams by hitting limit switches turn the motor off once the valve has been fully cycled from the open or closed position. When a “close” signal is detected, for example, the motor is activated and begins to rotate. An integrated cam on an internal shaft revolves when the motor shuts the valve. Limit switches are ridden on this cam until the cam lobes break the circuit and shut off the motor. When it comes to opening the actuator valve, the opposite is true.
- In certain applications, a motorized ball valve must partially open or respond to changing flow conditions. Generally, a digital position sensor carries out this task for electrically operated valves. Based on the required flow, an external input signal (such as 4-20mA or 0-10V) is produced. Through an output feedback system, a microcontroller in the operator continually compares the analog input signals to the actual position, changing the actuator as needed to equalize the signals and obtain the desired position. The valve is typically closed using the low end of the signal range (4mA or 0V). This type of operation is known as “usually closed”. The signal limitations or the valve mounting may need to be inverted depending on the application, which may call for the valve to be typically open.
Application: Motorised Ball Valve.
The motorized ball valve has significant driving power and can operate a big-diameter valve, making their industrial design ideal for large-diameter pipelines or sites where the flow of the piping system needs to be controlled.
A motorized ball valve is designed to be used with a variety of media, including water, oil, gas, steam, acid, alkali, and many others. The motor driving force can control the opening and closing of large-diameter valves, and motorized valves can regulate pipeline flow, which is extremely useful for large-diameter pipelines or when using pipeline flow regulation.
Motorized Ball Valves may also be programmed through PLC remote control, therefore when operating in tough or remote conditions, we advise employing motorized valves.
Comparing Motorised Ball Valve with Pneumatic Ball valve.
- Compared to a motorized valve, pneumatic actuation offers a quicker rotation speed.
- A motorized valve has more complicated components, which makes maintenance more difficult and shortens life, whereas a pneumatic valve has fewer components and requires less frequent maintenance.
- A motorized valve has more precision accuracy since there is a greater likelihood of leaks and pressure fluctuations with a pneumatic valve.
- In contrast to the motorized valve, which has a high initial cost but a lower running cost, pneumatic valves have a low initial cost but a higher operating cost.
- When compared to a motorized valve, the pneumatic valve consumes more energy.
Summary: Motorised Ball Valve.
Almost all applications that need remote operations employ electric motorized valves. The variety of electrically actuated valve types is as wide-ranging as their uses, as seen by the brief overview provided above. You may always get in touch with us for more information on the high-quality products we offer.