Tiansu (Tianjin) Valve Group Co., Ltd. is one of the leading manufacturers and suppliers of worm gear operated flange butterfly valve in China. If you're going to buy wholesale customized worm gear operated flange butterfly valve made in China, welcome to get quotation from our factory. Quality products and reasonable price are available.
Utilizes a circular disc as the closing element. The center of rotation of the disc (i.e., the center of the valve stem) is located on the centerline of the valve body and the sealing surface section of the disc. The disc rotates around its axis through a 90-degree angle; rotation to 90 degrees completes the opening or closing action.
When the flanged butterfly valve is closed, the outer circular sealing surface of the disc compresses the synthetic rubber seat, causing elastic deformation of the seat. This generates an elastic force that acts as the specific sealing pressure, ensuring the sealing performance of the valve.
Technical Parameters
- Body Material: Ductile Iron
- Connection Size: DN50 - DN2400
- Nominal Pressure: 1.0 MPa, 1.6 MPa
- Applicable Medium: Water
- Medium Temperature: 0~80°C
Product Features
Simple Structure
Compact size, lightweight, quick opening/closing, low operating torque, easy and effortless operation.
Flexible Installation
The gear operated flanged type butterfly valve can be installed in any position; sensitive opening/closing, low flow resistance, convenient and rapid 90° rotation operation.
Easy Installation & Operation
Convenient installation, flexible and low-effort operation; options include manual, worm gear, electric, pneumatic, and hydraulic actuation.
Bidirectional Sealing
Zero leakage in gas test.
Good Low-Pressure Sealing Performance
Sealing surface materials typically use rubber, plastic, etc.
Wide Medium Applicability
Suitable for air, water, sewage, steam, gas, oil products, etc.
Product Application
The flanged worm gear operated butterfly valve is primarily suitable for water supply and drainage systems in water plants, power plants, paper mills, food & beverage industries, etc. Especially suitable for use on water supply pipelines, serving as both regulating and shut-off equipment. The flanged butterfly valve controls fluid regulation and shut-off through the rotation of the disc, achieves good sealing when closed to reduce leakage potential, and features low operating torque and good regulating performance. Typical applicable temperature range is 0°C to 80°C. Applicable media include freshwater, sewage, etc.
Installation And Maintenance
1. Pre-Installation
Check all valve components for completeness, without damage or missing parts; inspect the sealing surfaces of the valve's connecting flanges for flatness, cleanliness, free of scratches or dirt; check the pipeline for debris or residue, ensuring it is unobstructed.
2. Installation Steps
Align the valve with the pipeline flanges, securely connect using bolts and nuts; check the valve connections for tightness, no leakage; rotate the worm gear handwheel to check if the disc rotates smoothly without sticking.
3. Precautions
Before use, ensure the flanged worm gear operated butterfly valve is in the closed position to avoid medium leakage; when opening or closing, rotate the worm gear handwheel slowly to avoid excessive force causing damage; regularly inspect the valve's sealing performance, replace seals promptly if leakage is found; regularly check all components for integrity, replace any damaged or worn parts promptly.
4. Maintenance & Care
Regularly clean and lubricate the gear operated flanged type butterfly valve to maintain cleanliness and flexibility; regularly check connection points for tightness, retighten if loose; regularly inspect seals for integrity, replace if worn or aged; regularly check and lubricate the valve's transmission components to ensure smooth operation.
FAQ
Q: What is the main advantage of the flanged worm gear operated butterfly valve?
A: The worm gear provides a mechanical advantage, reducing the operating torque required to open or close the valve, making manual operation easier, especially for larger sizes.
Q: Can this flanged butterfly valve be used for throttling/flow regulation?
A: Yes, due to its 90-degree rotational operation and good flow characteristics, it can be used for flow regulation in addition to on/off service.
Q: What is the key factor ensuring the seal in this soft-seated gear operated flanged type butterfly valve?
A: The seal is achieved by the elastic deformation of the rubber seat caused by the disc's compression, creating the necessary sealing force.
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