Good Price Discount Double Flange Hard Soft Seal Double Triple Offset Eccentric Butterfly Valve

• Media: Gas, Water, Steam
• Driving Mode: Electric, Manual
• Connection Form: Double Flange
• Structure: Centre Sealing
• Seal Form: Soft and Hard Sealing
• Valve Stem: Normal
• Model NO.: DFBV-003
• 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
• Trademark: Kamroo
• Origin: China
• HS Code: 8481804090
• Production Capacity: 10000PCS/Year

Product Description

Butt welded triple offset butterfly valve, This valve is also known as Triple Offset Butterfly Valve. The two offsets are the same as double offsets, and the third one is created by a geometrically designed seat surface. This designed seat and disc create a conical angle, which allows the disc to seal the seat with no friction and come in contact with the shut-off positions. This design in the metal seat provides a bubble-tight shutoff. 

Wafer type butterfly valve fits with the help of studs. The studs go through pipe flanges and tighten the valve between two flanges. This type of valve is useful to prevent any backflow in the system. It is designed to keep a seal against bi-directional pressure.

The Lug type butterfly valve also connects in between the flange-ended pipeline. There are threaded inserts on both sides of the valve body. Both sides of the flange-ended pipe connect to these threaded inserts with two sets of bolts without nuts.

Flanged End Butterfly Valve, This type of valve, Valve has a Flanged body that matches the flanged end pipe and fits with the Nut and Bolts.

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