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.
Features:
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
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