Concentric Butterfly Valves
Class 150 Concentric Butterfly Valve is configured for standard industrial isolation and general process service. Available materials, end connections, operation and inspection options can be matched to the project specification.
Technical Specifications
| Pressure Class | ASME Class 150 |
|---|---|
| Design Standard | API 609 / ASME B16.34 |
| Size Range | 2–48 in |
| Body Materials | Ductile Iron, WCB, CF8M |
| Connections | Wafer, Lug |
| Application Focus | Utility, water and general process isolation |
Selection Guide
Class 150 is used for standard industrial isolation and general process service. Often selected where the line does not require a higher pressure class, while material and temperature still control the final rating. For this valve design, buyers should also review disc offset, seat design, shaft arrangement and operator sizing.
Final pressure-temperature limits, dimensions, operating torque and test values are confirmed against the applicable standard, approved drawing and project specification.
Download a PDF summary with the Class-specific product range, materials, end connections, selection notes and RFQ checklist.
Download PDF DatasheetMaterial Selection
Typical project materials include Ductile Iron, WCB, CF8M. The correct grade depends on corrosion, minimum and maximum design temperature, toughness, hardness limits and the project material specification.
End Connections
Rf flanges are common; other ends depend on the piping class and project specification. Available connection families for this product include Wafer, Lug.
Design & Engineering
For Class 150, focus on material compatibility, shutoff requirement, dimensions and practical operation. Also confirm offset design, seat material, body/disc material, end pattern, operator and shutoff requirement.
Process, water, cooling, utilities, power, lng and large-bore isolation. Final suitability depends on the actual fluid, design temperature, corrosion conditions, cycling frequency and project specification.
Testing & Inspection
Confirm material certificates, shell/seat testing and project documentation before release.
RFQ Checklist
Use this checklist to prepare a complete enquiry and reduce technical clarification during quotation.
01 · Basic Data
Confirm nominal size, Class 150, quantity, design standard and required delivery basis.
02 · Construction
State body material, trim or seat requirement and the approved end connection: Wafer, Lug.
03 · Project Requirements
Include process fluid, design temperature, applicable project specifications, inspection level and certification requirements.
Buyer Questions
Provide valve size, Class 150, design standard, body and trim material, end connection, operation, quantity, service fluid, design temperature and inspection requirements.
Typical project options include Ductile Iron, WCB, CF8M. Final material selection must follow the approved piping class and service conditions.
This product family includes Wafer, Lug. The correct connection depends on the line class, flange facing or weld preparation in the project specification.
Where the design allows it, gear, pneumatic, electric or hydraulic operation can be evaluated after operating torque, fail action and project requirements are confirmed.
Related Products
Compare other pressure classes in the same valve family or return to the full product range.
