BS 1655 50th Edition, July 12, 1950
Flanged automatic control valves - For the process control industry (face-to-face dimensions)
Includes all amendments and changes through Reaffirmation Notice , October 1, 2012
Additional Comments: INCLUDES AMENDMENT 2
Published By:British Standards Institution (BSI)
Valves of conventional pneumatic-diaphragm-operated single or double beat type. Recommendation that applies to other types of automatic control valve for process control industry.