Procurement guide
How to Compare Butterfly Valves for an RFQ
Direct answer: Compare butterfly valves against the same requirement set: body and disc construction, seat and other material requirements, size, pressure rating, end connection, actuation, medium, temperature, installation constraints, and required documents. A type name alone is not enough to confirm a match.
Information to Compare
| Comparison field | What to state | Why it matters to the RFQ |
|---|---|---|
| Construction | State the required butterfly valve construction or describe the project function for confirmation. | Construction affects how the requested scope is compared. |
| Seat and disc | List specified seat, disc, stem, and body materials. | Material requirements should be checked against the operating medium and project specification. |
| Size and pressure | Provide DN or NPS and PN or pressure class. | Every quoted line should match the requested size and pressure fields. |
| Connection | State wafer, lug, flanged, or another required connection. | The valve connection must be coordinated with the adjoining piping. |
| Actuation | State lever, gearbox, pneumatic, electric, or another requested method. | Actuation changes the requested assembly and control information. |
| Service conditions | Provide medium, temperature, orientation, and installation constraints. | Service data helps identify fields that require confirmation before quotation. |
Buyer Questions
Is nominal size enough to compare butterfly valves?
No. Include pressure rating, connection, materials, actuation, medium, temperature, and project requirements with the size.
Why should the adjoining pipe connection be included?
It helps confirm that the requested valve connection and the piping interface are being compared on the same basis.
How should missing material details be handled?
State the known medium and operating conditions, mark the material field for confirmation, and avoid substituting an unverified material.
Prepare the Inquiry
Use the checklist to organize known requirements and mark missing fields for confirmation.
Send Your RFQ or BOM