Series 573

FlowShield™ DuC-AV, Dual check with atmospheric vent backflow preventer 

573403A.png
573403A.png
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Product Description

Dual check with atmospheric vent backflow preventer 
Complete with:

  • Low lead/lead free DZR brass body 
  • Intermediate atmospheric vent 
  • Dual union connections

Connection Options:

  • Sizes: 1/2” - 3/4”
  • Connection Types: NPT female, press, sweat
     

Technical data

Material: DZR low lead brass
Medium temperature range: 32 – 210 °F
Maximum working pressure: 175 psi
Low Lead

Certifications

ES LOW LEAD
IPC
IRC
UPC
Buy American Act
California HSC 116875
Maryland HB372
United States S.3874
Vermont Act 193
NSF/ANSI/CAN 372
ASSE 1012

Drawings and specifications

Part number Inlet Connection Outlet Connection Actions
573403A 1/2" NPT female
union
1/2" NPT female
union
3D models
Tender text
CALEFFI, 573403A, FlowShield™ DuC-AV. Dual check backflow preventer with atmospheric vent Dual union for easy servicing and testing Protects potable water systems from backflow of contaminated fluids Inlet Connection: 1/2" NPT female, union. Outlet Connection: 1/2" NPT female, union. Maximum working pressure: 175 psi. Medium temperature range: 32 – 210 °F. Material: DZR low lead brass.
SCIP code
9d1be477-1621-493b-88dd-d779dfe00d24
573406A 1/2" Press
union
1/2" Press
union
3D models
Tender text
CALEFFI, 573406A, FlowShield™ DuC-AV. Dual check backflow preventer with atmospheric vent Dual union for easy servicing and testing Protects potable water systems from backflow of contaminated fluids Inlet Connection: 1/2" Press, union. Outlet Connection: 1/2" Press, union. Maximum working pressure: 175 psi. Medium temperature range: 32 – 210 °F. Material: DZR low lead brass.
573409A 1/2" Sweat
union
1/2" Sweat
union
3D models
Tender text
CALEFFI, 573409A, FlowShield™ DuC-AV. Dual check backflow preventer with atmospheric vent Dual union for easy servicing and testing Protects potable water systems from backflow of contaminated fluids Inlet Connection: 1/2" Sweat, union. Outlet Connection: 1/2" Sweat, union. Maximum working pressure: 175 psi. Medium temperature range: 32 – 210 °F. Material: DZR low lead brass.
573493A 1/2" Sweat
union
1/2" NPT female
union
3D models
Tender text
CALEFFI, 573493A, FlowShield™ DuC-AV. Dual check backflow preventer with atmospheric vent Dual union for easy servicing and testing Protects potable water systems from backflow of contaminated fluids Inlet Connection: 1/2" Sweat, union. Outlet Connection: 1/2" NPT female, union. Maximum working pressure: 175 psi. Medium temperature range: 32 – 210 °F. Material: DZR low lead brass.
573503A 3/4" NPT female
union
3/4" NPT female
union
3D models
Tender text
CALEFFI, 573503A, FlowShield™ DuC-AV. Dual check backflow preventer with atmospheric vent Dual union for easy servicing and testing Protects potable water systems from backflow of contaminated fluids Inlet Connection: 3/4" NPT female, union. Outlet Connection: 3/4" NPT female, union. Maximum working pressure: 175 psi. Medium temperature range: 32 – 210 °F. Material: DZR low lead brass.
SCIP code
ad49344d-6fe6-4a6d-baab-a1baf0a898b9
573100A 1" G (ISO 228-1A) M
union
1" G (ISO 228-1A) M
union
3D models
Tender text
CALEFFI, 573100A, FlowShield™ DuC-AV. Dual check backflow preventer with atmospheric vent Dual union for easy servicing and testing Protects potable water systems from backflow of contaminated fluids Inlet Connection: 1" G (ISO 228-1A) M, union. Outlet Connection: 1" G (ISO 228-1A) M, union. Maximum working pressure: 175 psi. Medium temperature range: 32 – 210 °F. Material: DZR low lead brass.

Applications

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