Warranty

For additional product information, please visit www.zurn.com.
4444
BACKFLOW
PREVENTERS
BACKFLOW PREVENTERS
ACCESSORIESSTRAINERS
AUTOMATIC
CONTROL VALVES
PRESSURE
REDUCING VALVES
FIRE
PROTECTION VALVES
THERMOSTATIC
MIXING VALVESRELIEF VALVES
MISCELLANEOUS
PLUMBING PRODUCTSREPAIR KITS
SIZE
LEAD-FREE
PART NUMBER
LEAD-FREE
LIST PRICE EA.
740: SAE 45 X SAE 45, STAINLESS STEEL
” - 152.90
740F: FNPT X FNPT, STAINLESS STEEL
” -F 152.90
APPLICATIONS
The Model 740 is designed for installation in vending
machine water supply lines to prevent backflow of
carbon dioxide and carbonated water into the potable
supply.
FEATURES
• 3/8”
• 150 psi max
• 130°F max
• SAE J513 flare fitting threads inlet and outlet
• All stainless steel construction
• Silicon rubber check valve discs
APPROVALS AND APPLICABLE
SPECIFICATIONS
• ASSE® Listed 1022
• Certified to NSF/ANSI 372
TYPICAL INSTALLATION
The Model 740 can be installed in the horizontal or
vertical position. Under certain conditions the Model
740 may discharge water from the vent port. Provisions
must be made to ensure that discharge will not damage
surrounding property or equipment. Copper tubing shall
not be used downstream of the Model 740.
TYPICAL INSTALLATION
2
CO
Gas
Carbonator
Carbonated
Beverage
Dispenser
Backflow Preventer
Model 740
Water
Supply
Filter
Pump
Safe Drain
Beverage
Dispenser
Supply
Water
Backflow Preventer
Model 740
Safe Drain
Carbonated Beverage SystemNon-Carbonated Beverage System
SIZE
LEAD-FREE EXEMPT
PART NUMBER
LEAD-FREE
EXEMPT
LIST PRICE EA.
760: FNPT X FNPT
” - 106.20
” - 106.30
760C: FEMALE CU SWT X FEMALE CU SWT
” -C 106.20
” -C 106.30
APPLICATIONS
The 760 provides low hazard protection against
backflow from a residential boiler.
FEATURES
• 1/2”, 3/4”
• 175 psi max
• 210°F max
• Continuous pressure type backflow preventer with
threaded atmospheric vent drain
• Brass body construction
• Integral stainless steel screen
• Union connections both ends; available with FNPT or
copper connections
APPROVALS AND APPLICABLE
SPECIFICATIONS
• ASSE® Listed 1012, CSA® Certified
ACCESSORIES
• Fast fill regulator (80CI)
• Hydronic expansion tank (HXT)
• Pressure relief valve (P1000AXL or P3000BR)
TYPICAL INSTALLATION
Under certain conditions, the Model 760 will spill
water from the vent port. WARNING: Provisions must
be made to collect this spillage through an air gap or
other means. The vent port should never be directly
piped into a drainage ditch, sewer or pump. Under
no circumstances should the vent port or drain line
be plugged. Local codes shall govern installation
requirements. To be installed in accordance with the
manufacturers’ instructions and the latest edition of the
Uniform Plumbing Code. The installation shall be made
so that no part of the unit can be submerged.
INLET SHUT-OFF
MODEL 850XL
MODEL 760
MODEL 80CI
FAST FILL VALVE
OUTLET
RETURN
SAFE DRAIN
DIRECTION OF FLOW
MODEL P1000AXL
PRESSURE RELIEF VALVE
BOILER
WILKINS
SAFE DRAIN
TYPICAL INSTALLATION
760 SERIES – DUAL CHECK WITH ATMOSPHERIC VENT
740 SERIES – BACKFLOW PREVENTER FOR VENDING MACHINE WATER SUPPLY