Sizing & Performance
- IEC 60534-2-1 / ISA 75.01 Cv sizing; IEC 60534-8 noise/cavitation prediction
- Characteristics: equal-percentage, linear, quick-open; rangeability & resolution
- Seat leakage: FCI 70-2 (Classes I–VI)
Valve Families
- Globe (single/multi-stage, low-noise/cavitation trims)
- Ball (floating/trunnion, segment)
- Butterfly (double/triple-offset metal-seated)
- Angle & severe-service (anti-cavitation, anti-erosion)
Compliance & Options
- Fugitive emissions: ISO 15848-1, API 624
- Fire-safe: API 607 / ISO 10497
- Cryogenic: BS 6364; Clean service: FDA/USP VI materials (on request)
- Materials: WCB/LCB, CF8M/duplex/super duplex, alloys for chlorides/sour
Actuation & Positioners
- Pneumatic, electric, hydraulic; ISO 5211 mounting
- Digital positioners (HART/FF/Profibus), partial-stroke for ESD, tight shutoff options
RFQ Checklist (Control Valves)
Fluid, min/normal/max flow, ΔP & P/T envelope, line size/class, leakage class, emission spec, end connections, materials, actuator fail action, comms & diagnostics.