API 602 vs BS 5352 Forged Valve Standards
Technical guide · Supreme Valves India · Updated 2026-10-28
Direct answer: API 602 and BS 5352 both cover compact forged steel gate, globe and check valves for small-bore, high-pressure service. They overlap heavily. Put the governing standard from the piping class on the RFQ and confirm it on the quotation datasheet.
What buyers need to know
| Topic | Practical note |
|---|---|
| Product scope | Forged gate / globe / check, typically Class 800 / 1500 |
| Ends | SW, NPT, BW — same field language on both |
| Body materials | A105, F11, F22, F316, etc. |
| Testing | Usually API 598 referenced on RFQs regardless |
RFQ wording
API 602— most common on our Saudi/India forged linesBS 5352— appears on some UK/Commonwealth packages- List class, ends, trim, OS&Y, bolted bonnet explicitly either way
Manufacturer page: API 602 forged gates. Pattern RFQ: A105 Class 800.
Frequently asked questions
Can one valve meet both API 602 and BS 5352?
Many forged compact steel valves are designed to satisfy the overlapping requirements of both. State the governing standard on the PO and confirm on the datasheet which standard is certified.
Which standard should Saudi RFQs cite?
Follow the piping specification. API 602 is common on oil & gas packages; BS 5352 appears on some UK-influenced specs. If both are listed, ask which is governing for inspection.
Does the standard change Class 800 SW dimensions?
End preparation still follows ASME B16.11 for SW and ASME B1.20.1 for NPT. Face-to-face and design details follow the named valve standard and manufacturer drawings.