MANUAL OFFSET DISC BUTTERFLY VALVE LUG TYPE
“aline” Make Manual Offset Disc Butterfly Valve – Lug Type is a high-performance quarter-turn valve engineered for reliable shut-off and flow control in demanding industrial applications. Designed with an offset disc mechanism, the valve minimizes friction between the disc and seat during operation, resulting in reduced seat wear, lower operating torque, enhanced sealing performance, and extended service life.
The lug-type body features threaded mounting lugs, allowing the valve to be installed at the end of pipelines or used for dead-end service without disturbing the opposite side of the pipeline. Operated through a manual worm gear with handwheel, the valve provides smooth, accurate, and effortless operation, especially for medium and large-size pipelines requiring higher operating torque.
Manufactured from premium materials including Carbon Steel, Stainless Steel, Duplex Stainless Steel, Alloy Steel, and high-performance sealing materials, the ALINE Offset Disc Butterfly Valve is suitable for handling water, steam, gases, chemicals, oil, hydrocarbons, and various industrial process media under high-pressure and high-temperature conditions.
Widely used across Chemical Plants, Petrochemical Industries, Oil & Gas, Power Plants, Water Treatment Systems, Marine Applications, HVAC Systems, Steel Plants, Cement Industries, Pharmaceutical Manufacturing, Food Processing, and General Industrial Pipelines, this valve delivers dependable performance with minimal maintenance.
Product Features:
- Offset Disc Butterfly Valve Design
- Lug Type Body Construction
- Manual Worm Gear Operated
- Quarter Turn (90°) Operation
- Bubble Tight Shut-Off
- Low Operating Torque
- Reduced Seat Wear
- Suitable for Dead-End Service
- Heavy Duty Body Construction
- Excellent Corrosion Resistance
- Long Service Life
- Easy Installation & Maintenance
Technical Specifications:
| Parameter | Details |
|---|---|
| Product Type | Manual Butterfly Valve |
| Design | Offset Disc |
| Body Type | Lug Type |
| Operation | Manual Worm Gear |
| Size Range | DN50 to DN800 (2″ to 32″) |
| Body Material | WCB / SS304 / SS316 |
| Disc Material | SS304, SS316 |
| Seat Material | PTFE, RPTFE, Metal Seat, Graphite |
| Stem Material | SS410, SS420, SS304, SS316 |
| Pressure Rating | PN10, PN16, ANSI 150#, ANSI 300# |
| Temperature Range | -20°C to +425°C (Depending on Seat Material) |
| Mounting Standard | ISO 5211 (Optional for Automation) |
Standard Features:
- Offset Disc Technology
- Bubble Tight Sealing
- Heavy Duty Worm Gear Operator
- Smooth Quarter Turn Operation
- Reduced Disc & Seat Friction
- Low Maintenance Design
- Corrosion Resistant Construction
- Bi-Directional Sealing
- Suitable for Dead-End Service
- Long Mechanical Life
Optional Features:
- Pneumatic Actuator Operated
- Electric Actuator Operated
- Manual Lever Operated (Smaller Sizes)
- Metal Seated Design
- Fire Safe Construction
- Extended Stem Design
- High Temperature Version
- Special Protective Coating
- Oxygen Service Cleaning
- Customized Materials Available
Applications:
- Chemical Processing Plants
- Petrochemical Industries
- Oil & Gas Pipelines
- Steam Service
- Water & Wastewater Treatment
- Power Generation Plants
- Marine & Offshore Industries
- HVAC Systems
- Steel & Metal Processing
- Cement Industries
- Food & Beverage Processing
- Pharmaceutical Industries
- Pulp & Paper Mills
- General Industrial Process Lines