Transcription of API 600 TRIM NUMBER CHART & SERVICE COVERAGE
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API 600 TRIM NUMBER CHART & SERVICE COVERAGE
API 600/603/623/594/602 trim NUMBER CHARTSTANDARD trim CONFIGURATIONSThe following table details standard trim materials available for Gate, globe & check valves . Including Nominal Seating Surface, Stem and Backseat Bushing or Weld-deposit Materials and Hardness (where applicable).API trim NumberNominal TrimTrim codeStem (or hinge pin) + B/S bushing PDisc/Wedge Surface JSeat surfaceSeating Surface Hardness (HB) MinimumSeat Surface Material TypeSeat Surface Typical Specification GuideStem/BushingTrim Material GradeCastForgedWeldedMaterial TypeTypical Specifications TypeStem Hardness (HB)Backseat Bushing Hardness (HB)1410F6410 (13Cr) (200-275 HBN)F6 (13Cr) (200 HBN)F410 (13Cr)250 C 13-CrASTM A217 (CA15)ASTM A182 (F6a)13 CrASTM A276 T410 or T420200 min 275 max250 (18Cr-8Ni)F304 (18Cr-8Ni)Note18Cr-8 NiN/AASTM A182 (F304)AWS ER30418Cr-8 NiASTM - Hard faced304 HFS304F304 (18Cr-8Ni)F304 (18Cr-8Ni)
Special Bronze Bronze 410 (CR13) ... 1 API lists as obsolete but still used in the valve industry. (Trim# 1 is still used for API600 gates as well as globe & check valves). Trim #4 replaces Trim #1. Also, even though API no longer references trim# 2, for API603 gate, globe & check, (and in some commodity API600 gate valves in lower classes and ...
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