EV250BW 10,12,18 & 22 with assisted lift can operate from 0-10 bar differential pressure. This 2/2-way valve program is especially to use in applications with low differential pressure, but demanding moderate flow rates. This valve type is designed with EPDM seal, lead free dezincification resistant Eco brass for drinking water applications: for water supply, houses and large apartments, kitchens and bathrooms, commercial buildings, industrial buildings, zoning, laundry, dishwashing, main inlet valves, machine and food processing