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Home > Butterfly Valve > OEM Renewable metal seat butterfly valve triple eccentric structure Supplier, Manufacturers
OEM Renewable metal seat butterfly valve triple eccentric structure Supplier, Manufacturers
OEM Renewable metal seat butterfly valve triple eccentric structure Supplier, Manufacturers
OEM Renewable metal seat butterfly valve triple eccentric structure Supplier, Manufacturers
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OEM Renewable metal seat butterfly valve triple eccentric structure Supplier, Manufacturers
OEM Renewable metal seat butterfly valve triple eccentric structure Supplier, Manufacturers
OEM Renewable metal seat butterfly valve triple eccentric structure Supplier, Manufacturers

OEM Renewable metal seat butterfly valve triple eccentric structure Supplier, Manufacturers

Type：Triple Eccentric

Series：D43H-150LB

Size: DN40-DN600/2”-24”

Pressure rating: PN6/PN10/PN16/5K/10K/150LB/300LB/600LB

Design standard: API/EN/JIS

Service: OEM&ODM

This removeable seat metal seal butterfly valve features modular replaceable seat which can be changed on line without valve removal. Stellite hardfacing creates metal-to-metal sealing; triple eccentric design ensures friction-free operation and self-tightening bidirectional tight shutoff. Solid flanged body is pressure-resistant and compatible with pneumatic actuator for high-temperature and abrasive medium service.

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Product Description

Valve Type Flange butterfly valve Structure Eccentric
Standard API/EN/JIS Workmanship Investment casting
Sealing direction Bidirectional Sealing grade Zero leakage
Temperature -190°C < T < 700°C Operation Handle
Valve Overview

Characteristics

This replaceable seat metal-to-metal butterfly valve adopts a triple eccentric structure with stellite hardfacing. The modular seat can be replaced on the pipeline without removing the whole valve to save maintenance costs. Featuring friction-free opening and self-tightening bidirectional zero leakage, it withstands high temperatures and particle erosion. Equipped with flanged ends and optional pneumatic actuator, it is widely used for steam, flue gas, and abrasive medium in power, heating, and chemical industries.

Triple Eccentric Structure

Advantages

1
Convenient maintenance and cost-effective repair: The renewable valve seat is modular and can be replaced individually without dismantling the entire valve or the pipeline, enabling quick on-site replacement and significantly reducing downtime and spare parts costs.
2
Metal hard seal, strong adaptability to working conditions: The metal to metal seat is resistant to high temperatures and dust particle erosion, free from rubber aging, featuring triple eccentricity with no friction, and achieving zero leakage in both directions under high pressure.
3
The flange structure is sturdy, and the drive selection is flexible: The integral flange is pressure-resistant and seismic-resistant, and can be equipped with pneumatic/electric actuators to achieve remote on/off control, suitable for automation pipelines across multiple industries.

Packing

Standard export wooden case packaging

Standard Export Packing

Application Scenarios

The replaceable seat eccentric butterfly valve is widely applied in power plant desulfurization ducts, heating high-temperature steam pipelines, metallurgical furnace flue gas pipes, petrochemical thermal oil lines and industrial wastewater piping with solid particles.

Application 1
Application 2
Application 3

Material Specifications

Part Name Material
Valve bodyWCB, QT450-10, Q235, Alloy steel, stainless steel, etc.
Valve stemAlloy steel, stainless steel
Seal ringStainless steel composite multi-level
PackingFlexible graphite or stuffing
Valve seatStainless steel, cobalt based hard alloy
Valve stemStainless steel

Dimension Reference

Dimension Drawing
PN (MPa)DN (mm)LDD1D2Z-ΦdbfHH0AB
1.01501402852402118-Φ2224238523066150
2001523402952668-Φ2224247129785170
25016539535031912-Φ2226253332785170
30017844540037012-Φ22262606364106205
1.61501402852402118-Φ2224238523066150
2001523402952668-Φ2224247129785170
25016539535031912-Φ2226253332785170
30017844540037012-Φ22322606364106205

Frequently Asked Questions

What are the advantages of a triple eccentric butterfly valve?
The triple eccentric design eliminates friction between the seat and the seal ring during the entire 90-degree stroke, significantly extending the valve life and ensuring bidirectional zero leakage even in high-pressure applications.
Can the valve seat be replaced on-site?
Yes, one of the primary features of this valve is its replaceable modular seat. It can be replaced directly on the pipeline without removing the entire valve body, which reduces maintenance time and costs.
What temperature range can this valve handle?
Due to its metal-to-metal stellite hardfacing structure, this valve is designed to operate reliably in extreme conditions, ranging from -190°C up to 700°C.
Is this valve suitable for media containing solid particles?
Absolutely. The metal hard seal and triple eccentricity make it highly resistant to particle erosion, making it ideal for industrial wastewater, flue gas, and abrasive media.
Does this valve support automated control?
Yes, the valve can be equipped with various drive options, including manual handles, pneumatic actuators, or electric actuators for remote on/off control in automated systems.
What industries is this valve typically used in?
It is widely used in power plants (desulfurization), metallurgical industries (furnace gas), petrochemical thermal oil lines, and urban heating steam systems.

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