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Valves by Design Standard

API 603 Corrosion Resistant Valves

Use this collection when the valve specification points to API 603 corrosion-resistant construction. The current product family focuses on gate valves with stainless steel, duplex and super duplex body options for corrosive-service projects.

API 603 / ASME B16.342–24 inClass 150 / 300 / 600SS / Duplex / Super Duplex
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API 603 Corrosion Resistant Valves product collection

Product Collections

API 603 Product Family

Open the gate valve collection to compare pressure class, material choices and end connections for the required service.

Buyer Selection Matrix

API 603 Material and RFQ Review

Body materialThe current range lists CF8, CF8M, CF3M, Duplex 2205 and Super Duplex 2507.
Pressure classThe current collection is organized in Class 150, Class 300 and Class 600.
Corrosion basisState fluid composition, concentration, temperature and any material restrictions in the project specification.
End connectionRF, RTJ and BW options are shown on the product family page.
Traceability / inspectionIdentify MTC, PMI, NDE and any special material verification or inspection hold points.

Selection Logic

Material Grade Must Follow the Actual Service

Corrosion-resistant does not mean one material works for every fluid. Stainless, duplex and super duplex grades should be selected from the project corrosion study, fluid chemistry, chloride level, temperature, pressure and approved material specification. The RFQ should state the required grade instead of asking for “stainless steel” only.

Valve type and line function
Size and pressure class
Body and trim material
End connection / facing
Service pressure and temperature
Testing, inspection and documents

Project Application

When to Use This Collection

This page is useful when procurement or engineering has already identified API 603 as the required design route and needs to move from a general corrosion-resistant valve request to a specific gate valve class and material configuration.

For final selection, use the project valve specification, piping material class, approved datasheet and service conditions as the controlling documents.

Factory & Quality Evidence

Review Supplier Evidence Before PO

Buyers can review YINKE VALVE factory information, quality certificates, sample inspection records and project references before technical and commercial confirmation.

Factory & ProductionQuality & CertificatesProject ReferencesSend RFQ

Buyer Questions

API 603 Corrosion Resistant Valves FAQ

What valve family is currently included under API 603?

The current site collection includes API 603 corrosion-resistant gate valves.

Which materials are listed on the product page?

CF8, CF8M, CF3M, Duplex 2205 and Super Duplex 2507 are listed as body material options.

What should be included in an API 603 RFQ?

Include size, pressure class, exact body and trim material, end connection, service fluid and temperature, quantity, test requirements and material verification/documentation needs.

RFQ Checklist

Information to Send for Review

Valve type / design standard
Nominal size and pressure class
Body, trim and seat materials
End connection and facing
Operation / actuator if required
Fluid, pressure and temperature
Quantity and delivery requirement
ITP, testing and document scope

Technical data is confirmed against the final quotation, approved drawings and project specification.

Need a Project Valve Quotation?

Send the valve list, datasheet or piping specification for technical and commercial review.

Send RFQ