Triple Offset Butterfly Valves: API 609 Category B, Metal seated. Get quotes from verified suppliers on MetalMitra.
- Triple Offset Butterfly Valves
- Butterfly Valves
- API 609 Category B
- Metal seated
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Specifications
| Standard | API 609 Category B, API 598 |
|---|---|
| Body Material | WCB, CF8M, duplex, LCC |
| Size | 3" to 72" |
| Class | 150, 300, 600 |
| Seat | Laminated metal / graphite |
| Ends | Wafer, lug, double flanged, buttweld |
Grades & standards
- Stainless Steel 316
Chemical composition & mechanical properties
| C | Mn | P | S | Si | Cr | Ni | Mo | N |
|---|---|---|---|---|---|---|---|---|
| 0.08 | 2.00 | 0.045 | 0.030 | 0.75 | 16.0–18.0 | 10.0–14.0 | 2.00–3.00 | 0.10 |
| Tensile strength, min | 515 MPa |
|---|---|
| Yield strength (0.2%), min | 205 MPa |
| Elongation in 50 mm, min | 40% |
| Hardness, max | 217 HBW |
Single values are maximums unless marked min. Values per ASTM A240 (plate, sheet and strip); always confirm against the purchase specification and the mill test certificate.
Source Triple Offset Butterfly Valves from verified manufacturers, mills and stockists on MetalMitra. Metal-seated triple offset butterfly valves for zero-leakage shut-off in high-temperature and high-pressure service.
Share your size, grade, quantity and delivery location once, and compare offers from suppliers who stock or manufacture Triple Offset Butterfly Valves to API 609 Category B.
What you can source
- Wafer Butterfly Valves — Fitted between flanges with through-bolts.
- Lug Butterfly Valves — Threaded lugs for dead-end service.
- Double Flanged Valves — For large-diameter water mains.
- Triple Offset Valves — Metal-seated, zero-leakage valves for critical service.
Key properties
- Leak-Tight Sealing — Tested to API 598 for reliable shut-off.
- Wide Material Choice — WCB, A105, CF8M, LCC, duplex and alloy options.
- Compact & Light — Short face-to-face and low weight for large sizes.
- Multiple End Connections — Flanged, buttweld, socket weld and threaded ends.
Applications & industries
- Oil & Gas
- Refineries
- Petrochemical Plants
- Power Plants
- Water Treatment
- Chemical Plants
- Marine
- General Utilities
Testing & documentation
Inspection and documentation for Triple Offset Butterfly Valves follow API 609 Category B, API 598 plus any extra requirements in your PO.
- Shell hydrostatic test
- Seat leak test to API 598
- Back-seat test as applicable
- Visual & dimensional inspection
- Material certificates for body and trim
- EN 10204 3.1 Test Certificate
Why source on MetalMitra
- Verified suppliers — Mills, manufacturers and stockists are reviewed by the MetalMitra team before they list.
- One RFQ, several quotes — Share size, grade and quantity once and compare offers side by side.
- Full traceability — Heat numbers, test certificates and third-party inspection on request.
- Delivered worldwide — Export-worthy packing and shipping to India, the Middle East, Africa, Europe and the Americas.
Request pricing
Post an RFQ for Triple Offset Butterfly Valves with your drawing or specification and receive quotes from verified suppliers.
Technical note: Values on this page are for reference. Always confirm against the governing standard, your purchase specification and the test certificate.
Applications & industries
- Oil & Gas
- Refineries
- Petrochemical Plants
- Power Plants
- Water Treatment
- Chemical Plants
- Marine
- General Utilities
- Oil & Gas
- Petrochemical & Refining
- Power Generation
- Chemical Processing
- Water & Wastewater
- Marine & Shipbuilding
Testing & documents
Ask for the documents you need in your requirement — suppliers confirm them in their quotation:
- Mill test certificate to EN 10204 3.1, or 3.2 with third-party witness
- Third-party inspection (TPI) by SGS, Bureau Veritas, TÜV or your nominated agency
- Tests as the standard or your order requires: hydro, PMI, IGC, NDT, hardness or impact tests
FAQs
Wafer valves are clamped between flanges; lug valves have threaded lugs so one side can be removed while the line stays pressurised.
A metal-seated design with three offsets that gives bubble-tight shut-off at high temperature and pressure.
API 609, EN 593 and AWWA C504 are common.
Need Triple Offset Butterfly Valves?
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