Watts 9D-M2 3/4 Dual Check Backflow Preventer Valve w/ Atmospheric Vent FNPT Union x FNPT Union

Watts 9D-M3 series dual check valves with atmospheric vent are intended to provide backflow and cross-contamination prevention in a variety of applications including hot water boilers etc.Size: 3/4 ;Connections: FNPT Union x FNPT Union;Operating Temperature Range: 33 - 250u00b0F;Max. Working Pressure: 175 psi;Minimum Pressure: 25 psi;Can be used under continuous pressure;Suitable for boilers lab equipment farm equipment (livestock drinking cups etc.) and many others;Brass body with stainless steel strainer internal parts & rubber check valve seal;Suitable for vertical installation;Made to ASSE 1012 & CSA B64 standards CSA certified NYC B.S.A. 104-75-SM;