Fonti industriali verificate
- Scheda tecnica per valvole industriali: API 609 covers double-flanged, lug-type and wafer-type butterfly valves.
- Scheda tecnica per valvole industriali: The media compatibility of a concentric resilient-seated design depends on the seat material and design temperature.
- Scheda tecnica per valvole industriali: Size, seat construction, bidirectional sealing and flange compatibility must be verified against the supplier data sheet.