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Metal Seat Double Eccentric Flange Butterfly Valve

FYL is factory located in Tianjin China. Factory specialized in producing different type of valves. Metal seat double eccentric flange butterfly valve is one of major products. Our products has good quality and price advantage, also company available to make OEM products. Welcome inquiries from all over the world.

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Product Description

Our Metal Seat Double Eccentric Flange Butterfly Valve is engineered to overcome the limitations of traditional rubber-seated valves. By using a high-grade metal-to-metal sealing pair, we ensure that the valve remains functional even under extreme temperature and pressure fluctuations.

Brand: FYL (Tianjin Fuyaolai Technology Co., Ltd.)

Design Standard: ANSI, DIN, JIS, BS, GB

Sealing Type: Bi-directional or Uni-directional metal hard seal

Operating Temperature: -29°C to 425°C (depending on material)

Key Features of the FYL Metal Seat Double Eccentric Flange Butterfly Valve

Double Eccentric Design: The shaft is offset from the center of the seat and the center of the pipe. This "double offset" ensures that the disc leaves the seat immediately upon opening, reducing friction and preventing seat deformation.
Inclined Conical Sealing: The Metal Seat Double Eccentric Flange Butterfly Valve features an inclined conical seat surface. As the valve closes, the butterfly plate "wedges" into the seat, creating a tighter seal as pressure increases.
Easy Maintenance: One of the standout features of the FYL design is that the sealing ring can be replaced without fully disassembling the valve from the line, significantly reducing downtime.
Low Flow Resistance: The streamlined disc design ensures maximum flow capacity and minimal pressure drop.

Technical Specifications Table

Parameters	Specification Details
Product Name	Metal Seat Double Eccentric Flange Butterfly Valve
Nominal Diameter	DN50 - DN2400 (2" - 96")
Pressure Rating	PN10, PN16, PN25, PN40 / Class 150, 300
Body Material	WCB, CF8, CF8M, Ductile Iron, SS316L
Seat Material	Stainless Steel (SS304/316) + Stellite / Cr-Mo Steel
Connection Type	Double Flanged (RF, RTJ)
Operation	Manual Gear, Electric Actuator, Pneumatic, Hydraulic
Applicable Media	Water, Steam, Oil, Gas, Corrosive Chemicals

Why Choose FYL: Our Manufacturing Advantages

As a specialized factory located in Tianjin, China, FYL (Tianjin Fuyaolai Technology Co., Ltd.) has spent over 15 years perfecting the production of the Metal Seat Double Eccentric Flange Butterfly Valve .

Expert OEM/ODM Services: We don't just sell off-the-shelf parts. Our technicians can design customized Metal Seat Double Eccentric Flange Butterfly Valve solutions based on your specific torque requirements, media acidity, or installation space.
Rigorous Quality Control: Every Metal Seat Double Eccentric Flange Butterfly Valve undergoes high-pressure shell and seat leakage tests before leaving the factory to ensure 100% compliance with international standards.
Global Export Experience: From Europe to the Middle East, our products are trusted in diverse climates and infrastructure projects.

Industrial Applications

The versatility of the Metal Seat Double Eccentric Flange Butterfly Valve makes it the preferred choice for:

Water Treatment: High-volume drainage and supply systems.
Power Plants: Cooling water circulation and steam isolation.
Petrochemical: Handling crude oil and refined chemical transport.
Metallurgy: Gas and dust-laden air control in steel mills.

Main external and connection dimension

Main Parameter

Diameter DN		Main Size				Dand n-Ød
Diameter DN		Main Size				1.0MPa			1.6MPa			2.5MPa
mm	in	Short L	Long L	H1	H	D	D1	n-Ød	D	D1	n-Ød	D	D1	n-Ød
50	2	108	150	350	112	165	125	4-Ø18	165	125	4-Ø18	165	125	4-Ø18
65	2.5	112	170	370	115	185	145	4-Ø18	185	145	4-Ø19	185	145	8-Ø18
80	3	114	180	380	120	200	160	8-Ø18	200	160	8-Ø19	200	160	8-Ø18
100	4	127	190	420	138	220	180	8-Ø18	220	180	8-Ø19	235	190	8-φ22
125	5	140	200	460	164	250	210	8-Ø18	250	210	8-Ø19	270	220	8-Ø26
150	6	140	210	555	175	285	240	8-Ø22	285	240	8-φ22	300	250	8-Ø26
200	8	152	230	760	200	340	295	8-Ø22	340	295	12-Ø23	360	310	12-Ø26
250	10	165	250	830	243	395	350	12-Ø22	405	355	12-Ø26	425	370	12-Ø30
300	12	178	270	895	250	445	400	12-Ø22	460	410	12-Ø26	485	430	16-Ø30
350	14	190	290	950	280	505	460	16-Ø22	520	470	16-Ø26	555	490	16-Ø33
400	16	216	310	1190	305	565	515	16-Ø26	580	525	16-Ø31	620	550	16-Ø36
450	18	222	330	1255	350	615	565	20-Ø26	640	585	20-Ø31	670	600	20-Ø36
500	20	229	350	1305	380	670	620	20-Ø26	715	650	20-Ø34	730	660	20-Ø36
600	24	267	390	1340	445	780	725	20-Ø30	840	770	20-Ø37	845	770	20-Ø39
700	28	292	430	1520	480	895	840	24-Ø30	910	840	24-Ø37	960	875	24-Ø42
800	32	318	470	1710	530	1015	950	24-Ø33	1025	950	24-Ø41	1085	990	24-Ø48
900	36	330	510	1810	580	1115	1050	32-Ø33	1125	1050	28-Ø41	1185	1090	28-Ø48
1000	40	410	550	1960	650	1230	1160	32-Ø36	1255	1170	28-Ø43	1320	1210	28-Ø56
1200	48	470	630	2250	760	1455	1380	32-Ø39	1485	1390	32-Ø49	1530	1420	32-Ø56
1400	56	530	710	2435	850	1675	1590	36-Ø42	1685	1590	36-Ø49	1755	1640	36-Ø62
1600	64	600	790	2780	1030	1915	1820	40-Ø48	1930	1820	40-Ø56	1975	1860	40-Ø62
1800	72	670	870	3020	1230	2115	2020	44-Ø48	2130	2020	44-Ø56	2195	2070	44-Ø70
2000	80	760	950	3270	1350	2325	2230	48-Ø48	2345	2230	48-Ø62	2425	2300	48-Ø70

Addressing Buyer Concerns (FAQ)

Q: Can your Metal Seat Double Eccentric Flange Butterfly Valve handle high-temperature steam?A: Yes. By selecting high-chromium stainless steel or Stellite-faced seats, our valves can safely operate in temperatures exceeding 400°C.

Q: How does the "Double Eccentric" design affect the valve's lifespan?A: Standard valves suffer from constant friction. Our double offset design ensures the disc only touches the seat at the final point of closure, reducing wear by up to 70%.

Q: Do you provide support for international tenders?A: Absolutely. FYL provides full technical data sheets, 3D drawings, and material certificates (MTC) to support your procurement or bidding process.

Our Professional Service CommitmentPre-sales Service

We offer 7×24 technical consultation. Whether you need an urgent quote for a small batch or a complex solution for a major project, our team provides product display and specific design simulations for the Metal Seat Double Eccentric Flange Butterfly Valve .

In-sale Service

Transparency is key. We provide regular updates on the production progress of your order, including photos and testing videos, ensuring you stay informed from the foundry to the final coat of paint.

After-sales Service

Our relationship doesn't end at delivery. We assist with installation guidance and troubleshooting for every Metal Seat Double Eccentric Flange Butterfly Valve . If a component is damaged during operation, we provide rapid-response spare parts to keep your pipeline running.

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