Water • Backflow preventers ZOPT
Double check valve — type EC is applied for backflow prevention of fluids in categories 1 and 2 (drinking water and water with reduced esthetic quality). It is installed on the main water meter lines of apartments in residential-commercial buildings, commercial spaces, public institutions, and on hydrant networks. We distinguish between: DN20 - DN40 threaded and DN50 — DN300 flanged.