Historical
ANSI/IAS NGV 4.6-1999/CSA 12.56-M1999 (R2009)
ANSI/IAS NGV4.6-99/CSA 12.56-M99(R09) - Manually Operated Valves for Natural Gas Dispensing Systems
1. Scope
1.1.1 These requirements apply to manually operated valves for high pressure natural gas.1.1.2 These requirements do not apply to cylinder shut-off valves.
1.1.3 A valve that complies with the requirements for a Class A valve may be used for a Class B valve application, however, a Class B valve may not be substituted for a Class A valve.
CONTENT PROVIDER
CSA America, Inc. [csa]
CSA America, Inc. [csa]