Fonti industriali verificate
- Scheda tecnica per valvole industriali: API 594 covers flanged, lug, wafer and butt-welding-end check valves.
- Scheda tecnica per valvole industriali: A swing check valve uses a hinged disc that opens with forward flow and closes when flow reverses.
- Scheda tecnica per valvole industriali: Size, pressure class, minimum opening flow and transient closing performance must be verified for the specific model.