Bronze Cast Stainless Steel or Iron Lug Wafer & Flange RF Industrial Butterfly Valve for Control

• Customization: Available
• Media: Gas, Water, Steam
• Driving Mode: Electric, Manual
• Connection Form: Double Flange
• Structure: Centre Sealing
• Seal Form: Soft and Hard Sealing
• Valve Stem: Normal
• Work Pressure: Low Pressure (Pn<1.6mpa)
• Working Temperature: Medium Temperature (120°C<T<450°C)
• Material of Seal Surface: Soft Weld
• Valve Body: Casting
• Standard: API609 En593 BS5155 En1092 ISO5211
• Application: Industrial Usage, Water Industrial Usage, Household Usage
• Delivery Time: 15-25 Days
• Disc Material: Di/Nylon/1.4469/1.4529/Saf2205/2507/CF8/CF8m etc
• Seat Material: NBR/EPDM/PTFE/Viton/Silicone etc
• Coating: Customized
• End Standard: Pn6/10/16/25/21/150lb/JIS5K/10K/As2129 Table D/E/F
• Materials: Carbon Steel, Stainless Steel, Aluminum Bronze
• Shutoff Tightness: Zero Leakage
• Transport Package: Wooden Case
• Specification: customized
• Origin: China
• HS Code: 8481804090
• Production Capacity: 10000PCS/Year

Product Description

Double flange triple offset butterfly valves are designed to meet various industrial requirements and applications. While specific configurations may vary by manufacturer, some common types include:

Metal-Seated Double Flange Triple Offset Butterfly Valve: This type of valve features metal-to-metal seating between the disc and the valve seat. It is suitable for high-temperature and high-pressure applications where tight shut-off and durability are critical.

Soft-Seated Double Flange Triple Offset Butterfly Valve: Soft-seated valves use resilient materials such as elastomers (e.g., EPDM, Viton) for the seat, providing a bubble-tight seal. They are suitable for applications where tight shut-off and bi-directional sealing are required.

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.
 

Butterfly valves are quarter-turn valves that are best used for the stop/start of media flow in pipelines. When the valve handle is turned 90°, it either opens or closes completely. Throttling can be a bit tough, but these valves can still be used for regulating purposes.

Butterfly valves are usually installed in a fully open position. This is because installing the valve in its closed position can cause difficulties with the seat and seal positions.

Triple Offset: The term "triple offset" refers to the geometry of the valve's sealing mechanism. Unlike traditional butterfly valves, which have a concentric or single offset design, triple offset butterfly valves have three distinct offsets:

Shaft Offset: The valve shaft is positioned slightly off-center from the centerline of the valve body, reducing wear and friction during operation.
Disc Offset: The valve disc is also offset from the centerline of the valve body, which helps in achieving a tight seal and reducing friction.
Seat Offset: The valve seat is machined at an angle to the centerline of the valve body, allowing for a non-rubbing, interference-free sealing contact between the disc and the seat. This design minimizes wear and improves sealing performance, especially in high-pressure and high-temperature applications.

 

 

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