Lug center-line butterfly valve

Performance Features

• Excellent Sealing Performance: The unique seat and disc design of the Lug center-line butterfly valve ensures positive valve sealing while maintaining low seating torque. The cartridge style seat incorporates an elastomer bonded to a phenolic stabilizing ring, eliminating elastomer movement and reducing seat tearing or fatiguing due to bunching.
• Precise Disc-to-Seat Relationship: All Center Line Butterfly Valve discs are precision machined to a half ball profile, providing a precise disc-to-seat relationship, which contributes to its reliable performance.
• Isolated Valve Shaft: The basic three bushing design completely isolates the valve shaft from the body, resulting in increased control of the valve disc, lower valve seating torque, and longer valve life.

Advantages

• Easy Installation: The threaded lugs on the valve body allow for easy bolting directly to the flanges of pipelines, making installation straightforward and time-saving.
• Space Saving: Compared to other types of valves, such as gate valves, Lug center-line butterfly valves have a more compact design, occupying less space and making them suitable for confined spaces.
• Cost-Effective: Generally, Lug center-line butterfly valves are less expensive than other types of valves while providing reliable service, making them a cost-effective choice for various applications.
• Lightweight: They are significantly lighter than traditional gate or ball valves, easing the burden on pipelines and facilitating handling and installation.
• Versatile: Lug center-line butterfly valves can handle a wide range of fluids and are used in various applications, including water, oil, and gas.
• High Flow Capacity: The design allows for a high flow capacity, minimizing pressure drops across the valve and ensuring efficient fluid flow.
• Minimal Maintenance: With fewer moving parts, Lug center-line butterfly valves typically require less maintenance than more complex valve types.

Application Scenarios

• Water Treatment: Lug center-line butterfly valves are commonly used in water treatment plants to control the flow of water and chemicals, ensuring efficient and reliable operation.
• HVAC Systems: They play a crucial role in heating, ventilation, and air conditioning systems, regulating the flow of air and water to maintain optimal temperature and humidity levels.
• Oil and Gas Industry: In the oil and gas sector, Lug center-line butterfly valves are used to control the flow of oil, gas, and other fluids, contributing to the safe and efficient operation of pipelines and processing facilities.
• Process Control: These valves are also used in various process control applications, such as chemical plants and food processing facilities, where precise regulation of fluid flow is essential.

Technical Parameters

• Size Range: Lug center-line butterfly valves are available in a variety of sizes to accommodate different pipe diameters and flow rates. For example, the Center Line Series 200 Butterfly Valve is available in sizes from 2" to 48", while the Series 225 and 250 are available in sizes from 2" to 24".
• Pressure Rating: The valves are designed to withstand specific pressure ratings, ranging from low to high pressures, based on application requirements. For instance, the Center Line Series 200 Butterfly Valve is rated at 200 psi bubble tight shut-off for sizes 2" to 12" and 150 psi bubble tight shut-off for sizes 14" and larger.
• Temperature Range: Lug center-line butterfly valves are capable of operating within a specified temperature range, ensuring optimal performance under varying environmental conditions. The temperature range depends on the materials used for the valve body and seals.
• Materials: They are constructed from high-quality materials such as ductile iron, stainless steel, or cast steel, ensuring resilience and resistance to corrosion.

Maintenance

• Regular Inspection: Periodic inspection of the valve is necessary to check for any signs of wear and tear, such as damage to the disc, seat, or seals. This helps to identify potential issues early and prevent costly repairs or downtime.
• Lubrication: The moving parts of the valve, such as the shaft and bearings, should be lubricated regularly to ensure smooth operation and reduce friction.
• Cleaning: The valve should be cleaned regularly to remove any dirt or debris that may accumulate on the disc or seat, which can affect the valve's sealing performance.
• Replacement of Worn Parts: If any parts of the valve are found to be worn or damaged during inspection, they should be replaced promptly to maintain the valve's functionality and reliability