Design & Pressure Standards
- ASME B16.34 (design), pressure classes 150–2500
- End connections: ASME B16.5 (flanged), B16.47 (LD flanges), B16.25 (BW), B16.11 (SW/THD)
Valve Families & Application Standards
- Gate: API 600 (steel), API 602 (compact) – isolation
- Globe: API 623 – throttling
- Ball: API 6D (pipeline), API 608 (general) – low torque, quick shutoff
- Butterfly: API 609 – large diameter/low ΔP (double/triple offset)
- Check: API 594, API 6D – backflow protection
- Relief/Safety: API 520/526, ISO 4126 – overpressure protection
Compliance Options
- Fugitive emissions: ISO 15848-1, API 624
- Fire-safe: API 607 / ISO 10497
- Cryogenic: BS 6364
- Sour service: NACE MR0175/ISO 15156
Common Materials
- Bodies: WCB/WCC, LCB/LCC (LT), CF8/CF8M, duplex A995 4A/5A, alloys for chloride/acid media
- Trims: 13Cr, 316, Stellited seats; elastomers per media/temperature
Actuation & Accessories
- Pneumatic/electric/hydraulic actuators (ISO 5211), gear operators
- Digital positioners (HART/FF/Profibus), limit switches, solenoids, PST for ESD
Valves RFQ Checklist
Type/standard, size & Class, end connection, body/trim MOC, service data (P/T/media), leakage class (FCI 70-2), emissions/fire-safe, actuation & comms, test & docs.
