Issuing body
BIS
Latest edition
1991 (R2018)
Region
India
Equipment items
1
Scope
Indian control valve standard.
Key requirements (6)
- Specification for diaphragm-operated control valves.
- Indian counterpart of ISA 75 / IEC 60534 family.
- Cv calculation, leakage classes (I–VI), inherent characteristics.
- Hydrotest per IS 4733 / API 598.
- Pressure classes per IS 4853 (PN 16 to PN 250 typical).
- Used for compliance in Indian refineries and process plants.