ANSI-AWWA C515-01-Reduce-wall RS Gate Valve

API 594-2004 Check Valve Flanged Lug Wafer

BS5150 Cast iron gate valves

DIN 3352-1979 Gate Valves of Unalloyed and Low-alloyed Steel, with External Stem Thread

DIN EN 558.1-1995 FACE-TO-FACE AND CENTRE-TO FACE DIMENSIONS OF METAL INDUSTRIAL VALVES FOR USE IN FLANGED PIPE SYSTEMS

ISO 5208－1993 ISO 52081993 Industrial valves — Pressure testing of valves.PDF

ISO 7259 Predominantly key-operated cast iron gate valves for underground use

ISO 15761 Steel gate, globe and check valves for sizes DN 100 and smaller, for the petroleum and natural gas industries.