API (American Petrolium Institute) Spec 6D - Specification for pipeline valves

[Qualiman]

Does any one know where can i find this standard (Specification for pipeline valves)
?

Thank you anyway

QQQQQualiman

 

[gmac]

this can be ordered from API Phone (202) 682-8375 or check out their web site at www.api.org API 6D is currently at the 21st edition

 

[mani.venkatesh]

API provides complimentary copy of the standard, provided you apply for a registration of the same.