Caleffi 573503A 3/4" NPT female Inlet/Outlet Dual Check Backflow Preventer 56056 Full size with deep knurling

Full size with deep knurling for easy handling

mm:  48 - 114

The ultra-slick Black I

C162D9A-1C

CES0110057-01

Caleffi 573503A 3/4" NPT female Inlet/Outlet Dual Check Backflow Preventer 56056 Full size with deep knurlingCaleffi 573503A 3 4" NPT Female Inlet Outlet Dual Check Backflow Preventer Dual check continuous pressure backflow preventer with atmospheric vent. DZR low lead brass body. Max working pressure: 175 psi Working temp range: 32 210F Emergency backpressure temp: 250F 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