Double Offset Butterfly Valve manufacturers in Ahmedabad are progressively offering high-performance valves to industrial clients, EPC contractors, and exporters globally. Ahmedabad has become a key hub for valve manufacturing in India. MNC VALVES, Ahmedabad, is a dependable partner for projects requiring tight shut-off, low torque operation, and long service life because of its manufacturing strength, stringent quality standards, and export-ready production lines.
What is a Double Offset Butterfly Valve?
A quarter-turn valve with two offset axes is known as a Double Offset butterfly valve.
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The shaft is moved away from the sealing surface’s centerline by the first offset.
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The shaft is moved away from the bore’s centerline by the second offset.
In order to reduce rubbing between the seat and the disc and enable a metal or robust seat to close with little wear, these offsets induce the disc to have a cam action during operation. The end product is a valve that is perfect for demanding industrial applications because it offers dependable bubble-tight shut-off with lower operating torque and a longer service life.
Working Principle
The disc of a double offset butterfly valve rotates 90 degrees from open to closed.
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When the disc is in the open position, it provides less resistance by aligning with the flow.
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The double-offset shape reduces friction and stops continual rubbing by lifting the disc slightly away from the seat during initial movement as the valve shuts.
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Tight shut-off is ensured by the disc compressing against the seat during final closure.
For EPC contractors and large purchasers, this cam-like action guarantees reliable sealing and low torque actuation, which reduces actuator dimensions and running costs.
Key Advantages
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Tight Shut-off: Perfect for systems that need dependable isolation, it is made to reach leakage class VI (as detailed below).
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Low Torque Operation: By lowering friction and torque, double offset geometry enables the use of smaller actuators and lowers capital costs.
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Long Service Life: Less contact wear between the seat and disc prolongs the life of both parts and reduces maintenance downtime.
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Compact & Lightweight: Because butterfly valves are lighter and occupy less space than gate or globe valves, they are helpful for retrofitting and installations with limited space.
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Quick Operation: Quarter-turn motion allows for quick opening and closing, which is helpful for automated control loops and emergency isolation.
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Versatile Sealing Options: To accommodate different media kinds, pressures, and temperatures, metal or elastomer-lined seats are available.
Applications & Major Industries
Heavy industries make extensive use of double offset butterfly valves. Important application domains consist of:
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Oil and Gas: Pigging stations, loading arms, pipeline isolation, gas distribution, and utility isolation valves. When appropriately designed and coated, it is appropriate for both onshore and offshore facilities.
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Power Plants: Steam balancing lines, cooling water systems, feed water, and suction/discharge lines are examples of systems where low leakage and dependable shut-off are essential.
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Water & Wastewater Treatment:Wafer-style compact installation is advantageous for applications such as chemical dosing lines, pump isolation, sludge handling, and intake/outfall isolation.
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Chemical and petrochemical: Use the appropriate lining alternatives (PTFE, HNBR, metal seats) for abrasive and corrosive services.
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HVAC & Building Services: AHU isolation, chilled water, and hot water when low torque and fast, reliable operation are advantages.
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Steel and cement are high-temperature, abrasive systems that provide heavy-duty structure and unique coatings.
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Infrastructure Projects: Large-scale industrial parks, municipal water distribution, and tunneling drainage all need standardized, export-ready valve solutions.
Technical Specifications (standard offering)
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Pressure Rating: PN 16
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Testing Standard: API 598
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Size Range: 40NB to 1200NB
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Leakage Class: Class VI (bubble-tight leakage performance)
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Wafer-style end connection that works with ANSI B16.5 (150#) flanges
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Body Type: Wafer / Lug / Double Flange options available on request
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Materials: Cast/ductile iron, carbon steel, stainless steel options; elastomers and PTFE for seats and linings depending on media
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Actuation: Manual gearbox, electric, pneumatic, or hydraulic actuators per project requirements
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Coatings & Finishes: Epoxy, fusion-bonded coatings, or specialized anti-corrosive paints for export and harsh environments
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Optional Features: Fire-safe design, anti-static devices, bi-directional sealing, extended necks for insulation, customized OEM markings
Strength in Quality, Testing, and Manufacturing—MNC VALVES, Ahmedabad
MNC VALVES in Ahmedabad places a strong emphasis on quality systems designed for exporters, EPC contractors, and industrial buyers:
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Manufacturing Capacity: modern foundry and CNC machining to guarantee dimensional precision over the entire size range (40NB–1200NB).
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Material Traceability: Complete material traceability from raw material inspection, meeting export and international procurement regulations.
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Testing Regimen: Hydrostatic and seat leakage testing are performed at the factory in accordance with API 598. To satisfy EPC requirements, additional third-party inspections and certifications (such as Mill Test Reports and NDT reports) are available upon request.
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Quality Management: Consistent product output and adherence to buyer specifications are guaranteed by documented quality control procedures and inspection checkpoints.
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Customization & Engineering Support: End-user and EPC customizations are supported by in-house engineering, from flange and face-to-face dimension changes for retrofit projects to specific linings for corrosive media.
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Export Readiness: MNC VALVES is a reliable exporter because to its packaging, electrostatic leak testing, and shipment paperwork tailored to international logistics and customs compliance.
Why EPC Contractors & Exporters Choose Ahmedabad Manufacturers
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Competitive Pricing: Ahmedabad’s local production efficiency result in competitive cost without compromising quality.
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Responsiveness: Concentrated production clusters result in shorter lead times for bulk orders and prototypes.
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Technical Support: engineering teams with knowledge of international standards and project specifications, offering on-site assistance and documentation as needed.
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After-sales Service: Long-term operations and warranties are supported by spares, repair kits, and retrofitting services.
Enquiries & Quotations
To request a technical datasheet, tender-compliant quotation, or factory visit, contact MNC VALVES Sales & Engineering:
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Email: sales@mncvalves.com
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Website: www.mncvalves.com
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Address: MNC VALVES, Ahmedabad, Gujarat, India
