Z103 Dual Outlet Flyer - SupplyHouse.com
WILKINS
Model ZWFR
Freeze Prevention Valve
Features and Benefits
Backup Freeze Protection • Ideal for regions where occasional/unexpected freezes occur, yet winterization (blow-out) is not common • Hassle free, simple mechanical operating principle requires no periodic maintenance • Corrosion resistant, rugged bronze body • Ideally suited for double check and reduced pressure assemblies, vacuum breakers, and detector assemblies on large backflow products
Freeze Valve installed on 975XL Backflow Preventer
Field Retrofit Ready • ¼” MPT inlet port installs on all major brands of backflow preventer • Compact size and shape allow for ease of installation • Can be installed without system drain or shutdown Freeze Valve Installed on 420XL Vacuum Breaker
Model ZWFR Freeze Prevention Valve
FEATURES
APPLICATION: Designed to prevent freeze damage to backflow preventers installed above ground in geographical regions subject to occasional freezing. The model ZWFR senses water temperature and opens at 35°F to discharge near freezing water from the backflow device and draw warmer supply water through the valve. The model ZWFR closes when water temperature reaches 40°F.
Sizes: 1/4" Maximum working water pressure . . . . . . . . . . . . . . . . .175 PSI Maximum working water temperature . . . . . . . . . . . . . . .140°F Inlet connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1/4" MNPT Nominal opening temperature . . . . . . . . . . . . . . . . . . . . . . .35°F Nominal closing temperature . . . . . . . . . . . . . . . . . . . . . . .40°F Test cock . . . . . . . . . . . . . . . . . . . . . . . .1/8" MNPT X 1/4" FNPT
STANDARDS COMPLIANCE IAPMO LISTED - IGC 163-2001r1
TYPICAL INSTALLATION
MATERIALS Body O-rings Spring Internals
Cast Bronze, ASTM B 584 Buna Nitrile (FDA approved) Stainless steel, 300 series Brass, ASTM B16 Correct Installations
A
175 PSI
WILKINS WILKINS
WILKINS 175 PSI
Down
WILKINS
Side
WILKINS
Incorrect Installation
Up
DIMENSIONS AND WEIGHTS (do not include pkg.) Dimensions (approximate) Part Number 14-ZWFR
Side
175 PSI
B
175 PSI
C
175 PSI
The Model ZWFR should be installed on the downstream test cock or downstream attached piping of any backflow device installed above ground where freezing is a concern. NOTICE: If the Model ZWFR is installed on a test cock, the test cock must be left in the open position to allow the ZWFR to function properly. The device is best suited to be installed in the vertical down position, but may also be installed at any orientation up to horizontal ranging from side (horizontal) to down. Orientations above horizontal may cause an ice dam during operation and impair valve function. The device is not intended to replace the standard winterization process. WARNING: Under freezing conditions the Model ZWFR will discharge water from the outlet port. Provisions must be made to ensure that discharge will not damage surrounding property or equipment.
A
B
Weight
C
Inlet Size
in.
mm
in.
mm
in.
mm
lbs.
kg
1/4 NPT
1
24
2 37/64
65.3
2
50.1
0.5
.23
Model 720A W/ZWFR
Model 975XL W/ZWFR
150PSI
9
W 75 XL I ZU LKI R NS N
WILKINS
175 PSI
Direction of Flow
WILKINS a Zurn company, 1747 Commerce Way, Paso Robles, CA 93446 Phone: 855-ONE-ZURN (855-663-9876) Fax: 805-238-5766 In Canada: ZURN INDUSTRIES LIMITED, 3544 Nashua Dr., Mississauga, Ontario L4V 1L2 Phone: 905-405-8272 Fax: 905-405-1292 Product Support Help Line: 877-BACKFLO (877-222-5356) • www.zurn.com
Form No. ZMKTG480-56, Rev. 9/12
Model ZWFR
Freeze Prevention Valve
Features and Benefits
Backup Freeze Protection • Ideal for regions where occasional/unexpected freezes occur, yet winterization (blow-out) is not common • Hassle free, simple mechanical operating principle requires no periodic maintenance • Corrosion resistant, rugged bronze body • Ideally suited for double check and reduced pressure assemblies, vacuum breakers, and detector assemblies on large backflow products
Freeze Valve installed on 975XL Backflow Preventer
Field Retrofit Ready • ¼” MPT inlet port installs on all major brands of backflow preventer • Compact size and shape allow for ease of installation • Can be installed without system drain or shutdown Freeze Valve Installed on 420XL Vacuum Breaker
Model ZWFR Freeze Prevention Valve
FEATURES
APPLICATION: Designed to prevent freeze damage to backflow preventers installed above ground in geographical regions subject to occasional freezing. The model ZWFR senses water temperature and opens at 35°F to discharge near freezing water from the backflow device and draw warmer supply water through the valve. The model ZWFR closes when water temperature reaches 40°F.
Sizes: 1/4" Maximum working water pressure . . . . . . . . . . . . . . . . .175 PSI Maximum working water temperature . . . . . . . . . . . . . . .140°F Inlet connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1/4" MNPT Nominal opening temperature . . . . . . . . . . . . . . . . . . . . . . .35°F Nominal closing temperature . . . . . . . . . . . . . . . . . . . . . . .40°F Test cock . . . . . . . . . . . . . . . . . . . . . . . .1/8" MNPT X 1/4" FNPT
STANDARDS COMPLIANCE IAPMO LISTED - IGC 163-2001r1
TYPICAL INSTALLATION
MATERIALS Body O-rings Spring Internals
Cast Bronze, ASTM B 584 Buna Nitrile (FDA approved) Stainless steel, 300 series Brass, ASTM B16 Correct Installations
A
175 PSI
WILKINS WILKINS
WILKINS 175 PSI
Down
WILKINS
Side
WILKINS
Incorrect Installation
Up
DIMENSIONS AND WEIGHTS (do not include pkg.) Dimensions (approximate) Part Number 14-ZWFR
Side
175 PSI
B
175 PSI
C
175 PSI
The Model ZWFR should be installed on the downstream test cock or downstream attached piping of any backflow device installed above ground where freezing is a concern. NOTICE: If the Model ZWFR is installed on a test cock, the test cock must be left in the open position to allow the ZWFR to function properly. The device is best suited to be installed in the vertical down position, but may also be installed at any orientation up to horizontal ranging from side (horizontal) to down. Orientations above horizontal may cause an ice dam during operation and impair valve function. The device is not intended to replace the standard winterization process. WARNING: Under freezing conditions the Model ZWFR will discharge water from the outlet port. Provisions must be made to ensure that discharge will not damage surrounding property or equipment.
A
B
Weight
C
Inlet Size
in.
mm
in.
mm
in.
mm
lbs.
kg
1/4 NPT
1
24
2 37/64
65.3
2
50.1
0.5
.23
Model 720A W/ZWFR
Model 975XL W/ZWFR
150PSI
9
W 75 XL I ZU LKI R NS N
WILKINS
175 PSI
Direction of Flow
WILKINS a Zurn company, 1747 Commerce Way, Paso Robles, CA 93446 Phone: 855-ONE-ZURN (855-663-9876) Fax: 805-238-5766 In Canada: ZURN INDUSTRIES LIMITED, 3544 Nashua Dr., Mississauga, Ontario L4V 1L2 Phone: 905-405-8272 Fax: 905-405-1292 Product Support Help Line: 877-BACKFLO (877-222-5356) • www.zurn.com
Form No. ZMKTG480-56, Rev. 9/12
