Issuing body
BIS
Latest edition
2003 (R2018)
Region
India
Equipment items
1
Scope
Indian PRV / safety valve standard.
Key requirements (6)
- Specification for rising-stem pressure-relief valves.
- Indian counterpart of API 526 / API 520.
- Set pressure tolerance: ±3% (typical).
- Allowable accumulation: 10% (single), 16% (multiple), 21% (fire).
- Hydrotest and seat-tightness testing per IS 4733.
- Pressure ratings: PN 16 to PN 250.
Related standards (2)
Applied to 1 equipment item
Safety & Relief