IS 9866 : 1981 Marking system for valves

1 Scope

Covers the mandatory and optional marking of industrial valvesand states the manner of applying the marking, namely, on the body,on the flange and on an identification plate. Markings on the bodymay be integral with the body or on a plate distinct from theidentification plate mentioned above and securely fixed to thebody.

These specified markings serve to identify the manufacturer andthe valve, as well as to assist in proper application.