Double flange triple offset butterfly valves are available in various types, each designed to meet specific application requirements and industry standards. Here are some common types of double flange triple offset butterfly valves:
High-Performance Double Flange Triple Offset Butterfly Valve:
These valves are designed for high-pressure and high-temperature applications where tight shut-off and reliable performance are critical.
They often feature advanced sealing materials, such as metal-to-metal or metal-to-graphite seals, to ensure tight sealing even in demanding conditions.
Superior Sealing: The triple offset design provides tight sealing, even in challenging conditions with high pressures and temperatures, minimizing leakage and ensuring operational safety.
Durability: The robust construction and advanced materials used in the valve's manufacturing enhance its longevity and resistance to wear and corrosion.
Efficiency: The low torque requirements and reduced operating forces of the valve contribute to smoother operation and energy efficiency.
Versatility: Double flange triple offset butterfly valves offer versatility in terms of installation orientation and compatibility with various fluids and operating conditions.
Operation:
When the valve is in the open position, the disc rotates parallel to the flow direction, allowing fluid to pass through the valve with minimal resistance.
To close the valve, the disc rotates perpendicular to the flow direction, effectively blocking the flow of fluid through the valve.
The triple offset design ensures that the disc makes a tight and reliable seal with the valve seat, even in high-pressure and high-temperature conditions.
Actuation:
Double flange triple offset butterfly valves can be manually operated or automated using various actuation methods, such as electric, pneumatic, or hydraulic actuators.
Actuators provide the necessary force to rotate the disc and control the flow of fluid through the valve.
Automation allows for remote operation and precise control of the valve, making it suitable for use in automated process systems.
The standards for double flange triple offset butterfly valves may vary depending on the specific application, industry requirements, and regional regulations. However, some commonly referenced standards for these valves include:
American Petroleum Institute (API):
API 609: "Butterfly Valves: Double Flanged, Lug- and Wafer-Type."
API 598: "Valve Inspection and Testing."
American Society of Mechanical Engineers (ASME):
ASME B16.34: "Valves - Flanged, Threaded, and Welding End."
ASME B16.10: "Face-to-Face and End-to-End Dimensions of Valves."
American Water Works Association (AWWA):
AWWA C504: "Rubber-Seated Butterfly Valves."
International Organization for Standardization (ISO):
ISO 10631: "Industrial Valves - Butterfly Valves of Metal Construction."
European Norm (EN):
EN 593: "Butterfly Valves."
EN 1092: "Flanges and their Joints - Circular Flanges for Pipes, Valves, Fittings, and Accessories, PN Designated."
International Electrotechnical Commission (IEC):
IEC 60534: "Industrial-process control valves."
Manufacturer Standards:
Many manufacturers may adhere to their own internal standards or specifications, which might exceed industry standards to meet specific performance or quality requirements.
| Material |
| Body |
Carbon Steel(WCB A216), Stainless Steel(SS304/SS316/SS304L/SS316L) , Duplex Stainless Steel(2507/1.4529) |
| Disc |
Carbon Steel(WCB A216), Stainless Steel(SS304/SS316/SS304L/SS316L) , Duplex Stainless Steel(2507/1.4529) |
| Stem/Shaft |
SS416, SS431, SS304, SS316, Duplex Stainless Steel, Monel |
| Seat |
2Cr13, STL |
| Packing |
Flexible Graphite, Fluoroplastics |
| Actuator |
Hand Lever, Gear Box, Electric Actuator, Pneumatic Actuator |
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