Standard Specification for Envelope Dimensions for Butterfly Valves-NPS 2 to 24
MLA
ASTM International. Standard Specification for Envelope Dimensions for Butterfly Valves-NPS 2 to 24. West Conshohocken, PA ASTM International
APA
ASTM International. (0). Standard Specification for Envelope Dimensions for Butterfly Valves-NPS 2 to 24. West Conshohocken, PA ASTM International.
Chicago
ASTM International. Standard Specification for Envelope Dimensions for Butterfly Valves-NPS 2 to 24. West Conshohocken, PA ASTM International