Triple Offset Butterfly Valve
Metal-seated, zero-leakage design for high-temperature and high-pressure applications.
Technical Specifications
| Type | Triple Offset (Triple Eccentric) |
| Size Range | 3" to 48" (80 mm to 1200 mm) |
| Body Materials | Carbon Steel, Stainless Steel, Duplex |
| Disc Material | SS316, Duplex, Inconel clad |
| Seat Material | Metal to Metal (Stellite, SS316) |
| End Connections | Wafer, Lug, Double Flanged |
| Pressure Rating | PN16 / PN25 / PN40, Class 150 / 300 / 600 |
| Standards | API 609, API 598, BS 6755 |
Applications
Oil & gas, power plants, high-temperature steam, LNG
About the Triple Offset Butterfly Valve
The triple offset butterfly valve - also called triple eccentric butterfly valve - achieves tight shut-off (ANSI Class VI) with zero rubbing contact between disc and seat during the 90-degree stroking motion. The three offsets are: (1) the shaft is offset laterally from the centre of the seat bore so the disc clears the seat on opening; (2) the shaft is offset axially from the seat plane so the disc retreats away from the seat as it opens; and (3) the seat cone axis is angled relative to the pipe axis, giving a conical seating geometry that creates a single-point, tightening contact on closure.
This combined geometry means there is no rubbing, no friction, and no seat wear during the opening stroke - only a gentle cam-action contact at the last 1–2 degrees of closure. The result is a valve capable of providing bubble-tight metal-to-metal shut-off at full rated pressure across a temperature range from -196°C to +815°C, with a service life measured in decades. Fire-safe performance is inherent in the metal-seat design, and the valve meets API 609 Category B.
Vajra Industrial Solutions supplies triple offset butterfly valves in sizes 3" to 48" in Carbon Steel, Stainless Steel 316, Duplex, and Super Duplex body materials with Stellite- or SS316-faced seat rings. Pressure classes span PN16 to PN40 (Class 150 to 600). These valves are the go-to choice for refinery, LNG, power plant, and chemical plant applications where leakage to atmosphere or across seats is unacceptable.
Where It's Used
Key industries and applications for the Triple Offset Butterfly Valve
High-temperature steam and power plants
triple offset butterfly valves in WC9 or P91 alloy steel for main steam bypass, turbine admission, and extraction steam duties at temperatures up to 570°C
LNG and cryogenic service
SS316 / duplex triple offset butterfly valves for BOG (boil-off gas) headers, LNG transfer lines, and send-out headers at -196°C to +150°C
Refineries and petrochemical plants
fire-safe triple offset butterfly valves for crude oil, vacuum residue, hot oil heater bypasses, and vapour recovery units
Gas transmission
large-diameter Class 150/300 triple offset butterfly valves as compressor station block and bypass valves, offtake station metering, and town border stations
Chemical plants
SS316 or Hastelloy-trim triple offset butterfly valves for concentrated sulphuric acid, chlorine, and caustic services where elastomer-seated designs fail
How to Choose the Right Triple Offset Butterfly Valve
Specify a triple offset butterfly valve when: (a) the service requires ANSI Class IV–VI (metal-to-metal or bubble-tight) shut-off; (b) temperature exceeds 200°C where elastomer seats fail; (c) the fluid is a hydrocarbon, steam, or gas that requires fire-safe design per API 607; or (d) long service life with minimal maintenance is the priority. For low-pressure water, HVAC, or non-critical services below 150°C, a concentric rubber-seated butterfly valve is more economical.
Popular Configurations
Most commonly ordered specifications for the Triple Offset Butterfly Valve
Frequently Asked Questions
About Triple Offset Butterfly Valve - ordering, specs, delivery & compliance
What standards does the Triple Offset Butterfly Valve comply with?+
Our Triple Offset Butterfly Valve complies with API 609, API 598, BS 6755. All products are manufactured to international standards and come with full material test reports (MTR), dimensional inspection reports, and hydrostatic test certificates on request.
What materials are available for the Triple Offset Butterfly Valve?+
The Triple Offset Butterfly Valve is available in Carbon Steel, Stainless Steel, Duplex. Material selection depends on your process fluid, temperature, pressure, and corrosion requirements.
What is the delivery lead time for Triple Offset Butterfly Valve?+
Standard stock sizes are available for immediate dispatch from our Vadodara warehouse. Custom sizes and special materials typically have a lead time of 2–6 weeks depending on specifications. We serve customers across India within 1–7 business days and export to the Middle East, Southeast Asia, Europe, and the Americas with full export documentation.
Can I get a custom Triple Offset Butterfly Valve for a specific application?+
Yes. Vajra Industrial Solutions supplies custom-engineered butterfly valves for specific process conditions. Submit your technical requirements - including pressure class, temperature range, fluid type, end connections, and any special trim or coating needs - via our RFQ form or WhatsApp, and our engineering team will respond within 24 hours.
What pressure ratings are available for the Triple Offset Butterfly Valve?+
The Triple Offset Butterfly Valve is available in pressure ratings of PN16 / PN25 / PN40, Class 150 / 300 / 600. Higher-pressure classes are available for critical service applications in oil & gas, power generation, and chemical processing.
How do I request a quote for the Triple Offset Butterfly Valve?+
You can request a quote by clicking the "Request Quote" button on this page, filling out our RFQ form at vajravyuh.com/rfq, emailing us at sales@vajravyuh.com, or WhatsApping us directly at +91-9979774557. Please include quantity, size, pressure class, material grade, and end-connection type for the fastest response.
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Lug Type Butterfly Valve
Threaded lug design allowing removal of downstream piping without disturbing the system.
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Double Flanged Butterfly Valve
Heavy-duty flanged design for high-pressure and critical service applications.
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