Fonti industriali verificate
- Scheda tecnica per valvole industriali: Valve-trim materials must be selected for corrosion, erosion, temperature, hardness differential and galling resistance.
- Scheda tecnica per valvole industriali: Product standards impose different requirements on stems, seats, discs, packing and fasteners.
- Scheda tecnica per valvole industriali: Replacement parts require the original valve manufacturer, model, serial number, drawing or verified dimensional survey data.