Lug Butterfly Valve Supplier in India
In piping systems where isolation, maintenance flexibility, and space efficiency are important, lug butterfly valves are widely used due to their compact design and ease of installation. These valves are designed to be mounted between flanges with threaded inserts, allowing downstream equipment to be removed without disturbing the entire pipeline.
As a Lug Butterfly Valve Supplier in India, these valves are supplied for applications requiring reliable shut-off and simplified maintenance access. Their construction makes them suitable for both on-off service and controlled flow applications across various industrial systems.
How Lug Butterfly Valves Work
The valve operates using a circular disc mounted on a rotating shaft. When the shaft is turned, the disc rotates within the valve body to either allow or restrict the flow.
In the open position, the disc aligns parallel to the flow, reducing resistance. When rotated to the closed position, the disc seats against the liner or seat, creating a seal that restricts flow. The quarter-turn operation enables quick response and ease of control.
Benefits of Lug Butterfly Valves
- Allows installation without affecting the entire pipeline
- Suitable for systems requiring frequent maintenance or isolation
- Compact and lightweight compared to other valve types
- Quick operation with minimal torque requirement
- Can be used for both isolation and throttling applications
- Reduced installation space and cost
Design Standards
Lug butterfly valves are designed to meet international standards for performance, pressure rating, and dimensional accuracy:
- API 609
- ASME B16.34
- EN 593
- BS 5155
Inspection and Testing Standards
Each valve is inspected and tested to ensure proper sealing and operational reliability:
- API 598
- ISO 5208
- EN 12266-1
Body and Trim Material Compatibility
| Material | Grade | Applications |
|---|---|---|
| Cast Iron | GG25 | General water and utility systems |
| Ductile Iron | GGG40 | Water distribution and treatment plants |
| Carbon Steel | WCB, WCC | Oil and gas and industrial pipelines |
| Stainless Steel | F304, F316, F316L | Corrosive and chemical environments |
| Duplex Steel | F51, 2205 | Offshore and seawater systems |
| Super Duplex Steel | F53, F55, 2507 | High chloride and aggressive media |
| Aluminium Bronze | C95400, C95800 | Marine and desalination applications |
Industries Served
- Oil and Gas: Flow isolation and control in pipelines and processing units
- Water and Wastewater: Distribution and treatment systems
- Power Generation: Cooling water and auxiliary systems
- Chemical and Petrochemical: Handling process fluids and chemicals
- Marine and Offshore: Seawater and onboard systems
- Metal and Steel: Cooling circuits and utility lines
Special Features
- Lug design allows independent pipeline section isolation
- Threaded inserts for secure mounting between flanges
- Low torque operation suitable for manual and actuated use
- Compact structure for limited installation space
- Available in various pressure classes and sizes
- Options for different seating materials based on service conditions
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