Caleffi 573403A Dual Check Backflow Preventer with Atmospheric Vent, 1/2″ NPT Female Inlet/Outlet
Dual check continuous pressure backflow preventer with atmospheric vent.
- Dual union for easy servicing and testing
- Protects potable water systems from backflow of contaminated fluids
- Connection: 1/2″ NPT female, union
- Maximum Operating Pressure: 175 psi
- Medium Temperature Range: 32 – 210 °F
- Material: DZR low lead brass
Compliance with the following codes: IPC, IRC and UPC for use in accordance with the U.S. and Canadian plumbing codes
Compliance with the following standards:
- ASSE 1012-2009
- NSF/ANSI 372 – 2016, Drinking Water System Components – Lead Content
- Reduction of Lead in Drinking Water Act, California Health and Safety Code 116875
- S.3874, Reduction of Lead in Drinking Water Act
