API 609 Triple Offset Butterfly Valve · WCB, CF8M, WCC, Duplex · SMD Flow Control Valve Engineering

Size: DN50-DN1200 (2"-48")
Rating: Class 150-900 / PN16-PN150
Temp: -29°C to +500°C
Design: API 609 Category B

API 609 Category B

Butterfly Valves

API 609 Triple Offset Butterfly Valve

Q: Which documentation is included in a standard EPC MDR package?

When specified: approved GA drawing, EN 10204 3.1 material certificates, hydrostatic/pneumatic test records to the applicable test standard, NDE reports required by the ITP, coating records if painted, and the ITP release note. CAD/STEP models and bilingual datasheets are issued after size, class and trim are frozen — they are not generic public downloads.

Q: Which design and test standards apply to the Triple Offset Butterfly Valve?

Design reference: API 609 Category B. Face-to-face: ASME B16.10 / ISO 5752. Pressure test / inspection: API 598. NACE, fire-safe or fugitive-emission clauses are quoted only when the purchase specification requires them.

Summary

Triple Offset Butterfly Valve is designed for compact flow isolation in water, HVAC and industrial piping. triple-eccentric geometry targets metal-seat shutoff with reduced seat wear. Duplex stainless balances chloride resistance and mechanical strength for offshore and chemical service. Confirm end connection, trim, actuation and inspection scope against the approved project data sheet.

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Features

Product features

End connection options start from Wafer, Lug, Double Flanged; confirm facing and rating with the line list.
Construction, trim and actuation are matched to the stated duty before GA and BOM release.

Advantages

Selection advantages

Select NPS and pressure class inside the published catalogue envelope; freeze the working size on the data sheet before GA release.
Design basis and face-to-face follow the standards shown in the technical grid; do not assume a single standard covers every option.

Plant application

Family plant duties. This SKU still uses the size, class, materials and tests listed on this page.

Water & wastewater large-bore isolation

Function: Isolation or modulating duty on large-diameter water lines.
Medium family: Raw water, potable water or wastewater — lining/seat material confirmed against the water chemistry.
Pressure & temperature: Typical concentric/double-offset ratings follow API 609. Large-bore supply is limited to 56 in / DN1400 site capability; SKU size still governs.
Applicable standards: API 609, EN 593, ISO 5752 and API 598 as applicable.
Send with RFQ: DN, pressure class, wafer/lug/flanged, seat material, operation and leakage class.

Related application

Chemical / process isolation

Function: On/off or limited control where a butterfly is accepted by the piping class.
Medium family: Process chemicals and utilities. Elastomer vs metal seat follows medium and temperature.
Pressure & temperature: Temperature and tightness class confirmed on the datasheet. Do not assume fire-safe or NACE unless specified.
Applicable standards: API 609 / ASME B16.34 / API 598. Project specification controls seat and leakage.
Send with RFQ: Medium, temperature, seat/disc material, ends, operation and test documents.

Related application

High-performance / triple-offset (when specified)

Function: Higher-temperature or tighter shutoff isolation when a triple-offset design is specified.
Medium family: Steam, hydrocarbons or utilities listed on the project datasheet.
Pressure & temperature: Offset geometry, class and leakage class are SKU-specific. Fire-safe testing only when specified.
Applicable standards: API 609 Category B, ASME B16.34 and the project fire-test specification when required.
Send with RFQ: Class, size, offset type, leakage class, fire-test flag, ends and actuator torque data.

Related application

Engineering hub

Technical data

Design & test

Design	API 609 Category B
Face-to-face	ASME B16.10 / ISO 5752
Testing	API 598
Testing	API 598 / ISO 5208 to the class stated on the ITP
Connection	Wafer, Lug, Double Flanged

Parts and materials

Material	WCB, CF8M, WCC, Duplex
Connection	Wafer, Lug, Double Flanged

End connection options start from Wafer, Lug, Double Flanged; confirm facing and rating with the line list.
Construction, trim and actuation are matched to the stated duty before GA and BOM release.

Product FAQ

Engineering answers

What size and pressure range is the Triple Offset Butterfly Valve supplied in?

The catalogue series is DN50-DN1200 (2"-48"), Class 150-900 / PN16-PN150. A single NPS/class line in the notes is a typical working-size snapshot for drawing discussion, not the series limit. Confirm NPS, class, bore and trim against the approved data sheet.

Which documentation is included in a standard EPC MDR package?

When specified: approved GA drawing, EN 10204 3.1 material certificates, hydrostatic/pneumatic test records to the applicable test standard, NDE reports required by the ITP, coating records if painted, and the ITP release note. CAD/STEP models and bilingual datasheets are issued after size, class and trim are frozen — they are not generic public downloads.

Which design and test standards apply to the Triple Offset Butterfly Valve?

Design reference: API 609 Category B. Face-to-face: ASME B16.10 / ISO 5752. Pressure test / inspection: API 598. NACE, fire-safe or fugitive-emission clauses are quoted only when the purchase specification requires them.

Project engineering

Need a custom bore, CRA overlay, or actuator sizing?

Request quote / 3D

Butterfly Valves

API 609 Triple Offset Butterfly Valve

Product features

Selection advantages

Plant application

Water & wastewater large-bore isolation

Chemical / process isolation

High-performance / triple-offset (when specified)

Technical data

Design & test

Parts and materials

Dimensions

Inspection, MTC and ITP

Engineering answers

Need a custom bore, CRA overlay, or actuator sizing?

Related Products

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Resilient Seated Butterfly Valve, API 609, EN 593, 2-96 Inch

Double Eccentric Butterfly Valve, API 609, WCB, 24 IN, CL150