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A nickel - based alloy ball valve is a type of valve that uses a ball with a bore in it as the closing element. The ball is made of nickel - based alloys, which are metallic materials with nickel as the base element, often alloyed with elements such as chromium, molybdenum, and iron to enhance specific properties.
Nickel - based alloys have remarkable resistance to a wide range of corrosive media. For example, in chemical processing plants where highly corrosive acids like sulfuric acid, hydrochloric acid, or in marine environments with saltwater exposure, these ball valves can withstand corrosion for long periods. This is due to the formation of a passive oxide film on the surface of the alloy, which protects the underlying material from further attack.
High - Temperature Resistance
They can operate effectively at high temperatures. Some nickel - based alloy ball valves can handle temperatures up to several hundred degrees Celsius. In industries such as power generation (especially in steam systems) or petrochemical refining, where high - temperature fluids are common, these valves maintain their mechanical integrity and sealing performance.
Good Mechanical Properties
Nickel - based alloys possess high strength and toughness. This allows the ball valves to withstand high - pressure applications. They can endure the stress caused by the flow of fluids under high pressure without deforming or failing, ensuring reliable long - term operation.
Ball valves operate using an electric actuator to control the opening and closing of the valve. Here's how they typically work:
Electric Actuator: The electric actuator is mounted on top of the valve and is connected to the valve stem. It contains an electric motor, gears, and a control mechanism.
Electric Motor: The electric motor is the primary component responsible for generating the torque needed to open and close the valve. When the actuator receives a signal to operate, the motor rotates in either a clockwise or counterclockwise direction, depending on whether the valve needs to open or close.
Control Mechanism: The control mechanism within the actuator manages the operation of the electric motor. It receives signals from a control system, such as a programmable logic controller (PLC) or a distributed control system (DCS), indicating the desired valve position (open, closed, or partially open).
Power Supply: The electric actuator requires electrical power to operate. It is typically connected to an external power source, such as a power outlet or a control panel, providing the necessary voltage and current for operation.
Position Feedback: Some electric actuators are equipped with position feedback devices, such as limit switches or position transmitters. These devices provide feedback to the control system, indicating the actual position of the valve (fully open, fully closed, or somewhere in between).
Valve Operation: When the control system sends a signal to the electric actuator to open or close the valve, the actuator's motor rotates accordingly. This rotation is transferred to the valve stem, which in turn rotates the ball within the valve body.
Ball Rotation: The ball inside the valve body rotates to either align with the flow path, allowing fluid to pass through (valve open), or perpendicular to the flow path, blocking the flow of fluid (valve closed).
| Product name |
Nickel - Based Alloy Ball Valve |
| Nominal diameter |
1/2"-4"(DN15-DN100) |
| Material |
CF8(SS304),CF8M(SS316) |
| Working pressure |
PN40 |
| End connection |
RF/FF Flange End |
| Sealing |
PTFE. RTPFE. |
| Applicable Media |
Water, Oil, Gas and Corrosive Liquid etc |
| Temperature |
-40°C-210°C |
| Port |
Full Port |
| MOQ |
1PCS/SIZE |
Ball Valve Components
Although there are numerous parts making up the valve the basic components are made up of the following:
The Valve Body
Also referred to as the valve housing or shell, it contains all the inner components of the valve. Usually composed of a rigid metal, in this case Stainless Steel, it protects all the internal components and keeps them in the correct position and aligned for proper functioning. It also facilitated access for the external handle to connect with and rotate the internal ball, via the stem. The valve body comes in three assembly options: one-piece, two piece and three-piece designs.
The Rotary Ball
This is the part that gave the valve its name. It is a ball that has "flow path" known as a bore, through the center that allows the medium to flow through it. The ball is rotated by the stem, which either opens the flow when the bore is in-line with the pipe or closes the flow when the bore is perpendicular to the flow. There are two types of bore design: Full port and Reduced port.
The Stem
Also referred to as the shaft, it connects the external handle that rotates the inner ball. The Stem has washers and packing rings to ensure a tight seal and to prevent any leaks. The stem is rotated as the handle is turned, which in turn rotates the ball, opening and closing the flow.
The Seat
The Seat sits between the ball and the valve body and ensures a water tight seal. There are two seats that sit on either side of the ball and are usually composed of (PTFE).
The Handle
The handle is also often called the lever. it a standard ball valve it is the manual way used to turn the ball valve to the open or closed position.
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