Home / Blog / WCB Ball Valve Class 600 — RFQ Specification
WCB Ball Valve Class 600 — RFQ Specification
Updated 2026-10-30 · Supreme Valves India Engineering
BOQ language
Typical line: BALL VALVE 4 INCH CL600 RF ASTM A216 WCB SS316 TRIM RPTFE FIRE SAFE GEAR OPERATED. Include FB or RB, operator, and document set.
Specification checklist
NPS / DN and quantity
ASME Class 600 RF (or RTJ if specified)
Full bore or reduced bore
Seat: RPTFE / metal; fire-safe API 607 yes/no
Gear or actuator (ISO 5211)
API 598 test; EN 10204 3.1 MTC
FAQ
Class 600 vs Class 300 ball?
Follow the pipe class. Class 600 costs more and has different face-to-face / flanges.
Is fire-safe automatic?
No — call out API 607 / fire-safe on the RFQ.