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Home > Butterfly Valve > Wholesale Triple eccentric flanged butterfly valve hard seal WCB material Supplier, Factory
Wholesale Triple eccentric flanged butterfly valve hard seal WCB material Supplier, Factory
Wholesale Triple eccentric flanged butterfly valve hard seal WCB material Supplier, Factory
Wholesale Triple eccentric flanged butterfly valve hard seal WCB material Supplier, Factory
Wholesale Triple eccentric flanged butterfly valve hard seal WCB material Supplier, Factory
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Wholesale Triple eccentric flanged butterfly valve hard seal WCB material Supplier, Factory
Wholesale Triple eccentric flanged butterfly valve hard seal WCB material Supplier, Factory
Wholesale Triple eccentric flanged butterfly valve hard seal WCB material Supplier, Factory
Wholesale Triple eccentric flanged butterfly valve hard seal WCB material Supplier, Factory

Wholesale Triple eccentric flanged butterfly valve hard seal WCB material Supplier, Factory

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

The flange triple eccentric butterfly valve is a high-performance hard-seal butterfly valve featuring flange connection and a triple-eccentric structure. Its core advantages include frictionless opening and closing, bidirectional zero leakage, and resistance to high temperature and pressure. It is widely used for fluid cutoff and regulation in harsh working conditions.

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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
Butterfly Valve Technical Drawing

Characteristics

The flanged three eccentric butterfly valve adopts full flanged end connection for solid pipeline assembly. Uniform bolt distribution ensures stable pressure bearing and excellent tightness under high temperature and high pressure. Its triple-offset metal hard seal realizes friction-free operation and bidirectional bubble-tight shutoff with great resistance to abrasion and erosion. Available in WCB, 304 and 316, it is extensively used as main pipeline cut-off valve for heating steam, power plant piping, petrochemical oil, metallurgical hot air and desulfurization flue gas systems.

Valve Characteristics

Key Advantages

✔
Rigid Flanged Connection:

Integrated full-flange design ensures uniform stress distribution, high pressure resistance and excellent vibration stability for main pipeline installation.

✔
Friction-free Triple Eccentric Sealing:

No contact and no wear during opening and closing. Metal hard seal provides reliable bidirectional zero leakage with self-tightening sealing performance.

✔
Heavy-duty Performance:

Excellent resistance to high temperature, high pressure, abrasion and particle erosion, suitable for harsh industrial media.

✔
Easy Maintenance:

Flanged structure allows convenient disassembly and replacement without cutting pipes, greatly reducing maintenance difficulty.

Packing

Standard export wooden case packaging

Export Packing

Application Scenarios

The metal to metal flanged butterfly valve is widely used in power, petrochemical, metallurgy, central heating, water treatment, coal chemical and ship industries for steam, flue gas, hot oil, corrosive liquid and gas pipelines.

Application 1
Application 2
Application 3

Material Specification

Part Name Material Options
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

Technical Dimensions

Dimension Diagram
PN (MPa) DN (mm) L D D1 D2 Z-φd b f H H0
1.0 1501402852402118-φ22242385230
2001523402952668-φ22242471297
25016539535031912-φ22262533327
30017844540037012-φ22262606364
40021656551548016-φ26262757444

Frequently Asked Questions

What are the advantages of a triple eccentric design?
The triple eccentric (triple offset) design eliminates friction between the seat and the seal ring during operation, which significantly extends the valve's service life and ensures a bubble-tight shutoff.
Can this valve be used for high-temperature steam?
Yes, with a temperature range of -190°C to 700°C and a metal-to-metal hard seal, this valve is ideal for high-temperature steam and power plant applications.
Does the valve support bidirectional flow?
Yes, this flanged butterfly valve features a bidirectional sealing design, allowing it to maintain zero leakage regardless of the media flow direction.
What body materials are available?
We offer a variety of materials including WCB (carbon steel), Stainless Steel (304/316), QT450, and various alloy steels to suit different corrosive and pressure environments.
Is the flanged connection better than a wafer connection?
Flanged connections provide superior stability and uniform stress distribution, making them more suitable for large-diameter pipelines and high-pressure systems where vibration resistance is critical.
Is maintenance possible without removing the entire pipeline?
The flanged structure allows for easier disassembly and part replacement compared to welded valves, reducing downtime during industrial maintenance cycles.

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