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The Manual Double Eccentric Butterfly Valve is a high-performance flow control device engineered for demanding industrial applications. Featuring a double-offset (double eccentric) disc design, this valve minimizes friction during operation, significantly improving sealing integrity and service life. The manual operation via hand lever or gearbox ensures precise flow regulation, while its robust flanged construction makes it ideal for high-pressure, high-temperature, and corrosive environments. Widely used in water treatment, oil & gas, chemical plants, and power generation, this valve combines durability with operational efficiency.
Double Eccentric Design:
First Offset: Shifts the disc axis from the pipe centerline, reducing friction during rotation.
Second Offset: Tilts the disc seat axis, enabling tight sealing with minimal wear.
High-Pressure & Temperature Resistance:
Operates in temperatures up to 600°C (with metal seats) and pressures up to PN40/Class 300.
Bubble-Tight Sealing:
Utilizes stainless steel, PTFE, or graphite seats for zero leakage (ANSI Class VI standards).
Corrosion & Abrasion Resistance:
Body materials include carbon steel (WCB), stainless steel (316L), or duplex steel with epoxy coatings.
Manual Operation Flexibility:
Equipped with ergonomic hand levers or gear operators for precise torque control.
Extended Lifespan: Reduced disc-seat contact minimizes wear, even in high-cycle applications.
Cost-Effective: Lower maintenance and replacement costs compared to gate or globe valves.
Versatile Compatibility: Suitable for liquids, gases, and abrasive slurries.
Safety Compliance: Meets API 609, ISO 5752, and PED 2014/68/EU standards.
Water & Wastewater Treatment: Controls flow in pumping stations and sludge pipelines.
Oil & Gas: Manages crude oil, natural gas, and refined products in high-pressure pipelines.
Chemical Plants: Handles corrosive acids, alkalis, and solvents.
Power Generation: Regulates steam, cooling water, and fly ash in boilers and turbines.
Marine Systems: Resists saltwater corrosion in ballast and fuel oil systems.
| Parameter | Details |
|---|---|
| Size Range | DN50–DN2000 (2"–80") |
| Pressure Rating | PN10–PN40 / ANSI Class 150–300 |
| Temperature Range | -29°C to 600°C (dependent on seat material) |
| Connection Type | Flanged (ASME B16.5, EN 1092-1, JIS B2220) |
| Disc & Seat Materials | Stainless steel, PTFE, Graphite, or Super Duplex |
| Operation Torque | 20–800 Nm (adjustable via gear operator) |
Regular Lubrication: Apply high-temperature grease to the stem and bearings every 6–12 months.
Seal Inspection: Check seat and disc alignment annually for wear or deformation.
Corrosion Prevention: Clean valve surfaces and reapply anti-corrosion coatings in harsh environments.
Gearbox Maintenance: Inspect gear teeth for wear and ensure smooth manual operation.
Keyword Integration: Use keywords in headers, meta descriptions, and alt text for images.
Technical Content: Publish blogs on niche applications (e.g., “Double Eccentric Valves in LNG Plants”).
Certification Highlighting: Emphasize compliance with API 609 and PED to target oil & gas industries.
Visual SEO: Include exploded-view diagrams and maintenance tutorial videos to boost user engagement.
Backlink Building: Collaborate with industrial forums and certification bodies for authoritative links.
By aligning with these strategies, the Manual Double Eccentric Butterfly Valve will achieve higher search visibility, improved rankings, and increased lead generation on Google.
The Manual Double Eccentric Butterfly Valve is a high-performance flow control device engineered for demanding industrial applications. Featuring a double-offset (double eccentric) disc design, this valve minimizes friction during operation, significantly improving sealing integrity and service life. The manual operation via hand lever or gearbox ensures precise flow regulation, while its robust flanged construction makes it ideal for high-pressure, high-temperature, and corrosive environments. Widely used in water treatment, oil & gas, chemical plants, and power generation, this valve combines durability with operational efficiency.
Double Eccentric Design:
First Offset: Shifts the disc axis from the pipe centerline, reducing friction during rotation.
Second Offset: Tilts the disc seat axis, enabling tight sealing with minimal wear.
High-Pressure & Temperature Resistance:
Operates in temperatures up to 600°C (with metal seats) and pressures up to PN40/Class 300.
Bubble-Tight Sealing:
Utilizes stainless steel, PTFE, or graphite seats for zero leakage (ANSI Class VI standards).
Corrosion & Abrasion Resistance:
Body materials include carbon steel (WCB), stainless steel (316L), or duplex steel with epoxy coatings.
Manual Operation Flexibility:
Equipped with ergonomic hand levers or gear operators for precise torque control.
Extended Lifespan: Reduced disc-seat contact minimizes wear, even in high-cycle applications.
Cost-Effective: Lower maintenance and replacement costs compared to gate or globe valves.
Versatile Compatibility: Suitable for liquids, gases, and abrasive slurries.
Safety Compliance: Meets API 609, ISO 5752, and PED 2014/68/EU standards.
Water & Wastewater Treatment: Controls flow in pumping stations and sludge pipelines.
Oil & Gas: Manages crude oil, natural gas, and refined products in high-pressure pipelines.
Chemical Plants: Handles corrosive acids, alkalis, and solvents.
Power Generation: Regulates steam, cooling water, and fly ash in boilers and turbines.
Marine Systems: Resists saltwater corrosion in ballast and fuel oil systems.
| Parameter | Details |
|---|---|
| Size Range | DN50–DN2000 (2"–80") |
| Pressure Rating | PN10–PN40 / ANSI Class 150–300 |
| Temperature Range | -29°C to 600°C (dependent on seat material) |
| Connection Type | Flanged (ASME B16.5, EN 1092-1, JIS B2220) |
| Disc & Seat Materials | Stainless steel, PTFE, Graphite, or Super Duplex |
| Operation Torque | 20–800 Nm (adjustable via gear operator) |
Regular Lubrication: Apply high-temperature grease to the stem and bearings every 6–12 months.
Seal Inspection: Check seat and disc alignment annually for wear or deformation.
Corrosion Prevention: Clean valve surfaces and reapply anti-corrosion coatings in harsh environments.
Gearbox Maintenance: Inspect gear teeth for wear and ensure smooth manual operation.
Keyword Integration: Use keywords in headers, meta descriptions, and alt text for images.
Technical Content: Publish blogs on niche applications (e.g., “Double Eccentric Valves in LNG Plants”).
Certification Highlighting: Emphasize compliance with API 609 and PED to target oil & gas industries.
Visual SEO: Include exploded-view diagrams and maintenance tutorial videos to boost user engagement.
Backlink Building: Collaborate with industrial forums and certification bodies for authoritative links.
By aligning with these strategies, the Manual Double Eccentric Butterfly Valve will achieve higher search visibility, improved rankings, and increased lead generation on Google.
