Knowledge
Reference Library
Standards, codes and recommended practices used by the selection logic. Always cross-check against your project specification and the latest published revision.
Engineering Decision Support Tool - Screening / Internal Review Use unless independently validated.
This app references standards by name and short citation only. It is not an official standards publication and does not replace ASME, API, IEC, ISA, ISO, MSS, NACE, ASTM, or other licensed standards. Users must validate all final selections against licensed/current standards and project specifications.
ASME B16.34
Valves — Flanged, Threaded and Welding End
Pressure-temperature ratings, materials, dimensions, testing.
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ASME B16.5
Pipe Flanges and Flanged Fittings (NPS ½ – 24)
Flange dimensions, materials, P-T ratings up to CL2500.
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ASME B16.10
Face-to-Face / End-to-End Dimensions of Valves
Standard valve length envelopes for piping layout.
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API 600
Steel Gate Valves — Flanged & Butt-Welding Ends, Bolted Bonnets
Heavy-duty gate valves for petroleum & natural-gas industries.
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API 602
Compact Steel Gate, Globe and Check Valves
Small-bore valves ≤ NPS 4 in process plants.
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API 6D
Pipeline and Piping Valves
Ball, plug, gate and check valves for pipeline service.
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API 607 / ISO 10497
Fire Test for Quarter-Turn Valves
Soft-seated valve fire-safe certification.
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API 6FA
Fire Test for Valves
Fire-safe testing for API 6A / 6D valves.
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API 598
Valve Inspection and Testing
Hydrostatic shell & seat tests, leakage allowances.
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FCI 70-2 / IEC 60534-4
Control Valve Seat Leakage
Class I–VI shut-off classification for control valves.
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NACE MR0175 / ISO 15156
Materials for Sour Service
Hardness, alloy and processing limits for H₂S service.
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API 941
Steels for Hydrogen Service at Elevated Temperature & Pressure
Nelson curves; HIC / SSC mitigation for hydrogen service.
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ASME B31.3
Process Piping
Design, materials, fabrication, inspection of process piping.
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BS 6364
Specification for Valves for Cryogenic Service
Test & material requirements for cryogenic isolation.
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Engineering Decision Support Tool - Screening / Internal Review Use unless independently validated.
Outputs are generated for engineering screening and decision support only. Final responsibility for standards compliance, engineering judgment, specification verification, and approved project use remains with the user organization and qualified reviewing engineer.