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TRIM number chart

Nominal seating surface materials

Acc. to API 600 (gate valves), API 623 (globe valves) & API 602 (compact gate valves).

* HB is the symbol for the Brinell hardness as per ASTM E10. 
** Co-Cr A. This alloy classification includes such trademarked materials as Stellite 6™, Stoody 6™ and Wallex 6™.
Note: Cr = Chromium; Ni = Nickel; Co = Cobalt; Cu = Copper; Mo = Molybdenum; n/a = not applicable; Mfr. Std = manufacturer’s standard.

Typical service

IMPORTANT NOTICE: Data provided for informational purpose only. Please, always consult latest API specifications to check Trim data.
We recommend our customers to analyse the service requirements and specify the materials they consider adapted to their actual service conditions.