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Gate Valves Trim in API 600 Latest Edition

Gate Valves Trim in API 600 Latest Edition

Gate Valves Trim in API 600 Latest Edition

(OP)
Hi,
In the latest edition of API 600 (Fifteenth Edition - 2015) in Table 8, the trims No. 1 (13Cr) and No. 2 (SS304) have become obsolete.

I would like to know if these trims are removed definitly from the manufacturing process or we can specify them (13Cr for example) for some non Hazardous services.

I will note that in an active edition of API 623 (First Edition - 2013) for globe valves, these trims are specified.

Best regards

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