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Ductile Iron Wafer Butterfly Valve with Gear Box - China Suppliers & Factory for DN40-DN600, PN6-PN16
Valve Type: |
Wafer butterfly valve |
Structure: |
Concentric |
Standard: |
EN593 |
Workmanship: |
Investment casting |
Sealing direction: |
Bidirectional |
Sealing grade: |
Zero leakage |
Temperature: |
-20°C < T < 120°C |
Operation: |
Gear box |
Characteristics
Gear box operated butterfly valve, the valve is clamped between two pipeline flanges with double headed bolts.
The structure is compact, small in size, and light in weight. The transmission mechanism is a worm gear, usually installed at the top of the valve. The center of the valve stem, the center of the butterfly plate, and the center of the valve body are on the same axis, designed as a concentric structure.
Advantages
- 1 With only a small amount of force applied, the turbine can amplify the huge torque that drives the butterfly plate to rotate, making it easy to open/close butterfly valves with large diameters (such as DN300 or above) and high pressure differentials - avoiding the problem of "not being able to turn" when manually driving the valve stem, significantly reducing labor costs.
- 2 The worm gear has a reverse self-locking function to ensure the safety and stability of the system, especially suitable for unmanned pipeline systems.
- 3 The streamlined design of the butterfly plate reduces fluid resistance loss, making it an energy-saving product.
- 4 The gear box are usually made of cast iron, ductile iron, or stainless steel materials, which can withstand industrial environments such as high temperature, humidity, and slight corrosion. They are highly compatible with the application scenarios of turbine butterfly valves (such as water supply and drainage, chemical industry, and electricity) and can operate stably without additional protection.
Packing
Standard export wooden case packaging
Application Scenarios
Widely used in general industrial fields such as petroleum, gas, chemical, and water treatment, as well as in cooling water systems for thermal power plants. It can also be used in pipeline systems for industries such as metallurgy and municipal construction to cut off or control the flow of media such as air, water, steam, and oil.
Frequently Asked Questions
Q What is a gear box operated wafer butterfly valve?
A A gear box operated wafer butterfly valve is a concentric butterfly valve that uses a worm gear transmission mechanism to amplify operator input torque. It is clamped between two pipeline flanges using double-headed bolts, making it compact, lightweight, and easy to install in tight pipeline spaces.
Q What is the operating temperature range of this butterfly valve?
A This valve is designed to operate within a temperature range of -20°C to 120°C, making it suitable for a wide variety of industrial fluid control applications including water treatment, chemical processing, and thermal power cooling systems.
Q Does the gear box butterfly valve have a self-locking function?
A Yes. The worm gear mechanism features a reverse self-locking function, which prevents the valve from unintentionally opening or closing due to pipeline pressure or vibration. This makes it especially reliable for unmanned or automated pipeline systems.
Q What sealing performance does this valve offer?
A This wafer butterfly valve achieves zero leakage sealing grade with bidirectional sealing capability, meaning it provides reliable shutoff regardless of the direction of media flow in the pipeline.
Q What materials are used in the gear box construction?
A The gear box is typically manufactured using cast iron, ductile iron, or stainless steel. These materials provide excellent resistance to high temperatures, humidity, and mild corrosion, ensuring long-term stable operation in demanding industrial environments without the need for additional protective measures.
Q In which industries is this gear box butterfly valve commonly used?
A This valve is widely used across petroleum, gas, chemical, water treatment, thermal power, metallurgy, and municipal construction industries. It is suitable for controlling the flow of media including air, water, steam, and oil in various pipeline systems.