- Size
- DN50-DN1200 (2"-48")
- Rating
- Class 150 / PN10-PN16
- Temp
- -20°C to +150°C
- Design
- API 609 Category A
Alloy Valves
API 609 904L Butterfly Valve
Summary
904L Butterfly Valve is designed for compact flow isolation in water, HVAC and industrial piping. Confirm end connection, trim, actuation and inspection scope against the approved project data sheet.
Features
Product features
- End connection options start from Wafer, Lug, 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.
Engineering hub
Technical data
Design & test
| Design | API 609 Category A |
|---|---|
| Face-to-face | ISO 5752 / EN 558 |
| Testing | API 598 |
| Testing | API 598 / ISO 5208 to the class stated on the ITP |
| Connection | Wafer, Lug, Flanged |
Parts and materials
| Material | 904L (UNS N08904) |
|---|---|
| Connection | Wafer, Lug, Flanged |
- End connection options start from Wafer, Lug, Flanged; confirm facing and rating with the line list.
- Construction, trim and actuation are matched to the stated duty before GA and BOM release.
Dimensions
Catalogue series DN50-DN1200 (2"-48")，Class 150 / PN10-PN16. Face-to-face follows ISO 5752 / EN 558. A complete Class 150/300/600/900 × 2″–24″ matrix is not published here; NPS, class, bore and weight are issued on the approved drawing.
Request the approved GA drawing for face-to-face, height and weight at the specified NPS and class.
Inspection, MTC and ITP
Documents are issued against the purchase specification. Certificate numbers and generic public STEP/PDF files are not published on this page.
- Pressure test: API 598
- EN 10204 3.1 material certificates when specified; EN 10204 3.2 witness by agreement.
- NDE (RT, UT, PT, MT) and PMI only when the ITP requires them.
Product FAQ
Engineering answers
What size and pressure range is the 904L Butterfly Valve supplied in?
The catalogue series is DN50-DN1200 (2"-48"), Class 150 / PN10-PN16. 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 904L Butterfly Valve?
Design reference: API 609 Category A. Face-to-face: ISO 5752 / EN 558. Pressure test / inspection: API 598. NACE, fire-safe or fugitive-emission clauses are quoted only when the purchase specification requires them.
Project engineering
