Warranty

For additional product information, please visit www.zurn.com.
1717
BACKFLOW
PREVENTERS
BACKFLOW PREVENTERS
ACCESSORIES STRAINERS
AUTOMATIC
CONTROL VALVES
PRESSURE
REDUCING VALVES
FIRE
PROTECTION VALVES
THERMOSTATIC
MIXING VALVES RELIEF VALVES
MISCELLANEOUS
PLUMBING PRODUCTS REPAIR KITS
SIZE
LEAD-FREE
PART NUMBER
LEAD-FREE
LIST PRICE EA.
350ADA (GROOVED BODY): FLANGED OSY X FLANGED OSY
-” -ADA 4,176.10
” -ADA 4,380.50
” -ADA 5,438.10
” -ADA 7,851.60
” -ADA 13,469.30
” -ADA 18,339.10
For grooved options part number will be designated using
“GF” “FG” or “G” (eg -ADAFG -ADAGF -
ADAG)
350ADAPI (GROOVED BODY): FLANGED PI X FLANGED PI
-” -ADAPI 4,176.10
” -ADAPI 4,380.50
” -ADAPI 5,438.10
” -ADAPI 7,851.60
” -ADAPI 13,469.30
” -ADAPI 18,339.10
For grooved options part number will be designated using
“GF” “FG” or “G” (eg -ADAPIFG -ADAPIGF
-ADAPIG)
350ADABG (GROOVED BODY): GROOVED BG X GROOVED
BG (TAMPERED BUTTERFLY VALVES)
-” -ADABG 4,461.90
” -ADABG 4,774.20
” -ADABG 5,987.20
” -ADABG 8,644.40
” -ADABG 14,829.70
” -ADABG 20,466.00
350ADABF (GROOVED BODY): FLANGED BF X FLANGED BF
(TAMPERED BUTTERFLY VALVE)
-” -ADABF 4,581.00
” -ADABF 4,971.40
” -ADABF 6,244.00
” -ADABF 8,972.30
” -ADABF 15,173.70
” -ADABF 20,832.80
350ADABFG (GROOVED BODY): FLANGED BF X GROOVED
BG (TAMPERED BUTTERFLY VALVE)
-” -ADABFG 4,521.40
” -ADABFG 4,872.80
” -ADABFG 6,115.70
” -ADABFG 8,808.30
” -ADABFG 15,001.70
” -ADABFG 20,649.40
350ADA OSY & PI SHUT-OFF VALVE COMBINATIONS
-”-” Use OSY Pricing
For grooved options part number will be designated
using “GF” “FG” or “G” (eg -ADAPIOSYFG
-ADAOSYPIGF -ADAOSYPIG)
350ADAOSYBFG (GROOVED BODY): FLANGED OSY X
GROOVED BG (TAMPERED BUTTERFLY VALVE)
-” -ADAOSYBFG 4,319.00
” -ADAOSYBFG 4,577.40
” -ADAOSYBFG 5,765.70
” -ADAOSYBFG 8,324.00
” -ADAOSYBFG 14,280.50
” -ADAOSYBFG 19,402.60
350ADAPIBFG (GROOVED BODY): FLANGED PI X GROOVED
BG (TAMPERED BUTTERFLY VALVE)
-” -ADAPIBFG 4,319.00
” -ADAPIBFG 4,577.40
” -ADAPIBFG 5,765.70
” -ADAPIBFG 8,324.00
” -ADAPIBFG 14,280.50
” -ADAPIBFG 19,402.60
For grooved options part number will be designated
using “GF” “FG” or “G” (eg -ADAOSYBFG
-ADABOSYGF -ADAPIBG)
350ADAL (GROOVED BODY): LESS SHUT-OFF VALVES
-” -ADAL 2,418.70
” -ADAL 2,623.30
” -ADAL 3,680.70
” -ADAL 5,387.90
” -ADAL 9,610.90
” -ADAL 12,932.30
Part number will be designated using “L” (eg -ADAL
-ADALCFM -ADALSCFM)
300AR SERIES - REPLACEMENT BACKFLOW ASSEMBLY
(2-1/2” - 10”)
Custom length Double Check Valve Assembly for drop
in replacements Stainless steel grooved x grooved
spool installed between the backflow valve and the
outlet shut-o valve Can be used with  Series and
 Series grooved body models For replacement of
longer lay-length backflow preventers
ADAR list price adder to be added to list price of
the ADA to determine total list price
See order form and product specification sheet on the
website for details and options
SIZE
INLET X OUTLET
CONNECTIONS /
OPTIONS
LEAD-FREE LIST
PRICE ADDER EA.
-” Length Range “A” Up
to -”
428.80
” Length Range “A” Up
to -”
445.60
” Length Range “A” Up
to ”
516.60
” Length Range “B” Up
to -”
596.90
” Length Range “A” Up
to ”
690.20
” Length Range “B” Up
to -”
803.30
” Length Range “A” Up
to ”
922.80
” Length Range “B” Up
to ”
1,072.70
” Length Range “A” Up
to ”
1,118.80
” Length Range “B” Up
to ”
1,319.80
” Length Range “C” Up
to -”
1,519.60
Part number will be designated using “ADAR-X” where
X  the Length Range (eg -ADAR-A -ADAR-B
-ADAR-C)
APPLICATIONS
Ideal for fire protection applications. Epoxy coated,
ductile iron Zurn Wilkins 350 series Double Check Valve
Assembly with integral by-pass consisting of a water
meter in series with a double check backflow preventer.
FEATURES
• 350ADA: 2-1/2” - 10”
• 350DA: 2-1/2” - 12” [flanged body]
• 175 psi max
• 140°F max
• Resilient wedge OS&Y gate valves standard
• Epoxy-coated ductile iron body
• Modular check design
• Single access cover reduces maintenance down time
APPROVALS AND APPLICABLE
SPECIFICATIONS
• Approved by the Foundation for Cross-Connection
Control and Hydraulic Research at the University of
Southern California (2-1/2” – 10”)
• ASSE® Listed 1048, UL® Classified, C-UL® Classified,
FM® Approved, CSA® Classified, AWWA Compliant
• 12” UL classified (horizontal only)
• Certified to NSF/ANSI 61 and 372
ACCESSORIES
• OS&Y gate valve supervisory switch (OSY-40)
• Available with CFM water meter (5/8” x 3/4”)
TYPICAL INSTALLATION
See next page
350ADA/350DA SERIES – DOUBLE CHECK DETECTOR ASSEMBLY
SIZE
LEAD-FREE
PART NUMBER
LEAD-FREE
LIST PRICE EA.