La valvola di non ritorno a molla viene fornita con molla Tantal Queste unità di iniezione vengono utilizzate dove è richiesta una pulizia regolare del tubo di iniezione

DDA 120-7 AR-PVC-L/V/C-F-31U3U The SMART Digital DDA is a compact positive displacement

DDA 17-7 FCM-PP/V/C-F-31U2U2FG The SMART Digital DDA is a compact positive displacement

air bubbles

DDA 30-4 AR-PVC/T/C-F-31U2U2FG The SMART Digital DDA is a compact positive displacement

sp 5a 6 ne 5221906 La valvola di non ritornoMultistage submersible pump designed for pumping of chemically polluted groundwater. The motor is a 3 phase motor with sand shield, mechanical shaft seal, liquid lubricated bearings and pressure equalising diaphragm. Pumpset delivered without motor cable. Motor cable to be ordered separately, EPR, Teflon or XLPE.