Three-Eccentric Multi-Layer Hard Seal Flange Butterfly Valve

• Media: Water,Gas,Oil etc
• Driving Mode: Pneumatic
• Connection Form: Flange
• Model NO.: D343H
• Structure: Three-Eccentric Sealing
• Seal Form: Force Sealed
• Valve Stem: Normal
• Work Pressure: Pn6 – Pn25 (Class 150 – Class 300)
• Working Temperature: -40ºC~+200ºC
• Material of Seal Surface: Metal Hard Sealed
• Valve Body: Casting
• Standard: ANSI DIN JIS GOST GB/T
• Application: Industrial Usage, Water Industrial Usage, Household Usage
• Size: 1/2"-80"
• Operation: Handwheel, Gear, Electric, Pneumatic
• MOQ: 1
• Customized: OEM
• Transport Package: Wooden Case
• Trademark: SWF VALVE
• Origin: China
• HS Code: 8481804090

Product Description

 

Product Description

Introduction:

The flanged hard sealing butterfly valve adopts a precision elastic sealing ring and a three-eccentric multi-layer metal hard sealing structure. It is widely used for regulating flow and isolating fluids in industrial pipelines such as metallurgy, power generation, petrochemical, water supply, drainage, and municipal construction, where the medium temperature is < 400°C.

Implementation Standards
Design Standard: GB/T 12238, API609
Face-to-Face Dimensions: GB/T 12221, API609, ASME B16.34
Flange Connection: GB/T 9113, API609, ASME B16.10, ISO 5752
Testing and Inspection: GB/T 13927, API598
 

Product Advantages:

• The metal hard sealing butterfly valve adopts a three-eccentric sealing structure, with minimal wear between the valve seat and butterfly plate, ensuring a progressively tighter sealing function.

• The sealing ring is made of stainless steel, combining the advantages of both metal hard sealing and elastic sealing. It provides excellent sealing performance in both low and high-temperature conditions, with corrosion resistance and a long service life.

• The sealing surface of the butterfly plate is overlay-welded with cobalt-based hard alloy, making it highly wear-resistant and long-lasting.

• Large-sized butterfly plates use a trunnion structure, providing high strength, large flow area, and low flow resistance.

• The metal hard sealing butterfly valve has bi-directional sealing functionality, and its installation is not restricted by the flow direction of the medium or space orientation. It can be installed in any direction.

• The actuator can be installed in multiple positions (90° or 180° rotation), making it convenient for user operation.

Product Parameters

Parameter

Size	DN15 - DN2000 (1/2″ - 80″)
Pressure	PN6 - PN25 (Class 150 - Class 300)
Temperature	-40°C to +200°C
Material	Carbon Steel, Stainless Steel, Cast Iron, etc.
Media	Water, Steam, Oil, Gas, Corrosive Media, etc.
Operation	Handle, Gear, Electric, Pneumatic

Detailed Photos