CALEFFI FlowShield DuC-AV 573 Series Instruction Manual

FlowShield™ DuC-AV
Backflow preventer with intermediate atmospheric vent
© Copyright 2024 Caleffi
NSF/ANSI/CAN 372
C US
ASSE 1012
Technical specifications
Connections:
Materials: Body:
Filter:
Check valve:
Check valve stem:
Diaphragm:
Seals:
Meets the "lead free" requirement of Section 1417 of the Safe Drinking Water Act (SDWA).
This product has a weighted average lead content of less than 0.25% for its wetted surfaces contacted with consumable water.
Maximum working pressure:
Maximum working temperature:
Emergency back pressure temperature:
Medium:
Certifications:
1. ASSE 1012, UPC, IPC, IRC, and NPC compliance for use in accordance with U.S. and Canadian plumbing codes. Certified
and listed by ICC-ES, PMG File 1359.
2. CSA B64.3, Backflow Preventers - Dual Check Valve w/atmospheric port (DCAP). Listed and certified by CSA Group, File
Number 219199.
3. NSF/ANSI/CAN 372, US and Canadian Low-Lead and Lead-Free materials contents laws for drinking water
components. Certified by ICC-ES, PMG File 1360.
Function
The Caleffi Series 573 FlowShield™ DuC-AV is a dual check backflow
preventer with an intermediate atmospheric vent. It is designed to
protect drinking water systems from the backflow of contaminated
fluids, whether caused by backsiphonage or backpressure. In
backflow conditions, the valve discharges contaminated fluids
through its atmospheric vent.
The FlowShield DuC-AV complies with ASSE 1012 performance
standards and is certified by ICC-ES. It is listed and certified by CSA
Group to CSA standard B64.3. Additionally, it meets NSF/ANSI/CAN
372 requirements for low lead and lead-free materials, as certified by
ICC-ES. This product complies with the IPC, IRC, NPC, and UPC for
use in accordance with U.S. and Canadian plumbing codes, certified
by ICC-ES.
Product range
573 Series FlowShield DuC-AV
dual check backflow preventer with atmospheric vent
size 1/2"- 3/4" NPT female threaded connection with union
size 1/2" sweat connection with union
size 1/2" press connection with union
1
H0014607
www.caleffi.com
573 Series
1/2"- 3/4" NPT female with union
1/2" sweat with union
1/2" press with union
brass EN12165 CW617N
stainless steel
brass EN12165 CW724R
peroxide-cured EPDM
peroxide-cured EPDM
175 psi (12 bar)
210 °F (99 °C)
250 °F (121 °C)
system
PSU
water