购买 Back Flow Units

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$1,035.45
$1,863.00
Watts 2" 009M2 Backflow Preventer Reduced Pressure Zone Assembly RPZ 2 009M2-QT 0063010 63010
Amazon.com
15
Free shipping
折扣 44%
$1,035.45
$1,863.00
Watts 2" 009M2 Backflow Preventer Reduced Pressure Zone Assembly RPZ 2 009M2-QT 0063010 63010
Amazon.com
15
$1,381.49
$1,910.99
Zurn Wilkins 2-375XL 2" 375XL Reduced Pressure Principle Backflow Preventer
Amazon.com
123
Free shipping
折扣 27%
$1,381.49
$1,910.99
Zurn Wilkins 2-375XL 2" 375XL Reduced Pressure Principle Backflow Preventer
Amazon.com
123
$378.50
$491.99
Zurn Wilkins 1-350XL 1" 350XL Double Check Backflow Preventer
Amazon.com
123
Free shipping
折扣 23%
$378.50
$491.99
Zurn Wilkins 1-350XL 1" 350XL Double Check Backflow Preventer
Amazon.com
123
$694.32
Watts 800M4-QT Series 1-1/4" Bronze Anti-Siphon Pressure Backflow Preventer, Quarter Turn Shutoff, NPT Female Inlet X NPT Female Outlet, Freeze Sensor
Amazon.com
Free shipping
$694.32
Watts 800M4-QT Series 1-1/4" Bronze Anti-Siphon Pressure Backflow Preventer, Quarter Turn Shutoff, NPT Female Inlet X NPT Female Outlet, Freeze Sensor
Amazon.com
Free shipping
$200.48
$334.14
Watts 800M4-QT Series 1" Bronze Anti-Siphon Pressure Backflow Preventer, Quarter Turn Shutoff, NPT Female Inlet X NPT Female Outlet, Freeze Sensor,
Amazon.com
Free shipping
折扣 40%
$200.48
$334.14
Watts 800M4-QT Series 1" Bronze Anti-Siphon Pressure Backflow Preventer, Quarter Turn Shutoff, NPT Female Inlet X NPT Female Outlet, Freeze Sensor,
Amazon.com
Free shipping
$262.51
Zurn Wilkins 1-350 1" 350 Double Check Backflow Preventer
Amazon.com
62
Free shipping
$262.51
Zurn Wilkins 1-350 1" 350 Double Check Backflow Preventer
Amazon.com
62
$598.75
Febco 825Y Series 1" Bronze Reduced Pressure Zone Backflow Preventer Assembly, Quarter Turn Shutoff, NPT End Connections, Y Pattern, Flood Sensor With
Amazon.com
9
Free shipping
$598.75
Febco 825Y Series 1" Bronze Reduced Pressure Zone Backflow Preventer Assembly, Quarter Turn Shutoff, NPT End Connections, Y Pattern, Flood Sensor With
Amazon.com
9
$211.48
Zurn Wilkins 34-350 3/4" 350 Double Check Backflow Preventer
Amazon.com
70
Free shipping
$211.48
Zurn Wilkins 34-350 3/4" 350 Double Check Backflow Preventer
Amazon.com
70
$408.95
Watts 3/4" 009M3 Backflow Preventer Reduced Pressure Zone Assembly RPZ 3/4 009-QT 0063030 63030
Amazon.com
140
Free shipping
$408.95
Watts 3/4" 009M3 Backflow Preventer Reduced Pressure Zone Assembly RPZ 3/4 009-QT 0063030 63030
Amazon.com
140
$495.48
$616.00
Watts SD-3 Series 3/8" Stainless Steel Dual Check Valve Backflow Preventer For Beverage Machine, Male NPT Inlet X Male NPT Outlet, Atmospheric Vent,
Amazon.com
Free shipping
折扣 19%
$495.48
$616.00
Watts SD-3 Series 3/8" Stainless Steel Dual Check Valve Backflow Preventer For Beverage Machine, Male NPT Inlet X Male NPT Outlet, Atmospheric Vent,
Amazon.com
Free shipping
$835.65
$905.09
Watts LF007 Series 2" Lead-Free Copper Silicon Alloy Double Check Valve Backflow Preventer Assembly, Quarter Turn Shutoff, Single Top Entry, NPT
Amazon.com
1
Free shipping
$835.65
$905.09
Watts LF007 Series 2" Lead-Free Copper Silicon Alloy Double Check Valve Backflow Preventer Assembly, Quarter Turn Shutoff, Single Top Entry, NPT
Amazon.com
1
$5,125.99
Zurn Wilkins 4-375A 4" Reduced Pressure Principle Water Backflow Preventer Assembly
Core & Main
$5,125.99
Zurn Wilkins 4-375A 4" Reduced Pressure Principle Water Backflow Preventer Assembly
Core & Main
$4,833.99
Zurn Wilkins 4-350ASTOSY 4" Double Check Water Backflow Preventer Flanged End OSY Gate Valves
Core & Main
$4,833.99
Zurn Wilkins 4-350ASTOSY 4" Double Check Water Backflow Preventer Flanged End OSY Gate Valves
Core & Main
$1,442.99
Zurn 2-950XL3 2" 950XL3 Double Check Backflow Preventer | Totalrestroom.Com
Total Restroom
$1,442.99
Zurn 2-950XL3 2" 950XL3 Double Check Backflow Preventer | Totalrestroom.Com
Total Restroom
$8,543.99
Zurn Wilkins 6-350DA 6" Double Check Valve Water Backflow Preventer Assembly
Core & Main
$8,543.99
Zurn Wilkins 6-350DA 6" Double Check Valve Water Backflow Preventer Assembly
Core & Main
$392.66
$733.50
FEBCO T683040 LF850-QT-FZ 1" Double Check Valve Backflow Preventer Assembly
WebstaurantStore
36
折扣 46%
$392.66
$733.50
FEBCO T683040 LF850-QT-FZ 1" Double Check Valve Backflow Preventer Assembly
WebstaurantStore
36
$178.49
$337.00
Fisher 2932-0002 Backflow Preventer For Fisher Pre-Rinse Units
WebstaurantStore
1
折扣 47%
$178.49
$337.00
Fisher 2932-0002 Backflow Preventer For Fisher Pre-Rinse Units
WebstaurantStore
1
$768.99
$1,115.00
Zurn Elkay 34-975XL 3/4" Reduced Pressure Principle Backflow Assembly - 175 PSI
WebstaurantStore
442
折扣 31%
$768.99
$1,115.00
Zurn Elkay 34-975XL 3/4" Reduced Pressure Principle Backflow Assembly - 175 PSI
WebstaurantStore
442
$258.49
$607.00
Zurn Elkay 1-950XL 1" Wye Pattern Double Check Valve Backflow Preventer
WebstaurantStore
8
折扣 57%
$258.49
$607.00
Zurn Elkay 1-950XL 1" Wye Pattern Double Check Valve Backflow Preventer
WebstaurantStore
8
$2.35
DIG - 3/4' Backflow Preventer, Grey (FHT X MPT) - 18-002
Cheap Sprinklers
1
$2.35
DIG - 3/4' Backflow Preventer, Grey (FHT X MPT) - 18-002
Cheap Sprinklers
1
$362.95
Watts 63231 007M3QT-3/4 Bronze Double Check Valve Backflow Preventer
1877ForParts.com
1
$362.95
Watts 63231 007M3QT-3/4 Bronze Double Check Valve Backflow Preventer
1877ForParts.com
1
$789.00
$1,396.00
FEBCO T683041 LF850-QT-FZ 1 1/4" Double Check Valve Backflow Preventer Assembly
WebstaurantStore
2
折扣 43%
$789.00
$1,396.00
FEBCO T683041 LF850-QT-FZ 1 1/4" Double Check Valve Backflow Preventer Assembly
WebstaurantStore
2
$729.21
Watts Reduced Pressure Zone Backflow Preventer: 009, With Strainer, Bronze, 3/4 in Pipe Size, NPT Model: 009M2QTS-3/4"
Grainger
$729.21
Watts Reduced Pressure Zone Backflow Preventer: 009, With Strainer, Bronze, 3/4 in Pipe Size, NPT Model: 009M2QTS-3/4"
Grainger
$1,674.99
$2,431.00
Zurn Elkay 2-975XL 2" Reduced Pressure Principle Backflow Assembly - 175 PSI
WebstaurantStore
折扣 31%
$1,674.99
$2,431.00
Zurn Elkay 2-975XL 2" Reduced Pressure Principle Backflow Assembly - 175 PSI
WebstaurantStore
$698.45
Febco 765 2 in. PVB Backflow Preventer
Amazon.com
Free shipping
$698.45
Febco 765 2 in. PVB Backflow Preventer
Amazon.com
Free shipping
$419.99
$607.00
Zurn Elkay 1-950XLT 1" Backflow Preventer
WebstaurantStore
5
折扣 30%
$419.99
$607.00
Zurn Elkay 1-950XLT 1" Backflow Preventer
WebstaurantStore
5
$553.85
Febco LF860 Series 1" Lead-Free Bronze Reduced Pressure Zone Backflow Preventer Assembly, Quarter Turn Shutoff, Small Diameter, Spring-Loaded Check
Amazon.com
4
Free shipping
$553.85
Febco LF860 Series 1" Lead-Free Bronze Reduced Pressure Zone Backflow Preventer Assembly, Quarter Turn Shutoff, Small Diameter, Spring-Loaded Check
Amazon.com
4
$6,401.99
Wilkins Reduced Pressure Zone Backflow Preventer: 375A, Std Configuration, Ductile Iron, Flange Model: 4-375A
Grainger
$6,401.99
Wilkins Reduced Pressure Zone Backflow Preventer: 375A, Std Configuration, Ductile Iron, Flange Model: 4-375A
Grainger
$5,507.99
Wilkins Reduced Pressure Zone Backflow Preventer: 375A, Std Configuration, Ductile Iron, Flange Model: 212-375A
Grainger
$5,507.99
Wilkins Reduced Pressure Zone Backflow Preventer: 375A, Std Configuration, Ductile Iron, Flange Model: 212-375A
Grainger
$351.37
$657.00
FEBCO T683039 LF850-QT-FZ 3/4" Double Check Valve Backflow Preventer Assembly
WebstaurantStore
2
折扣 46%
$351.37
$657.00
FEBCO T683039 LF850-QT-FZ 3/4" Double Check Valve Backflow Preventer Assembly
WebstaurantStore
2
$791.27
Wilkins Backflow Preventer: 975XL, 3/4 in Pipe Size, MNPT, Bronze, For Water Media, Male, NPT Model: 34-975XLD
Grainger
$791.27
Wilkins Backflow Preventer: 975XL, 3/4 in Pipe Size, MNPT, Bronze, For Water Media, Male, NPT Model: 34-975XLD
Grainger
$648.92
$1,268.00
Watts T122593 LF007M3-QT-S-FZ 3/4" Double Check Valve Backflow Preventer Assembly With Strainer
WebstaurantStore
折扣 48%
$648.92
$1,268.00
Watts T122593 LF007M3-QT-S-FZ 3/4" Double Check Valve Backflow Preventer Assembly With Strainer
WebstaurantStore
$73.67
Watts LF288A 1/2" Lead-Free Brass Anti-Siphon Vacuum Breaker Backflow Preventer, Female NPT Inlet And Outlet, Silicone Disc Seat, Chrome Hood,
Amazon.com
269
Free shipping
$73.67
Watts LF288A 1/2" Lead-Free Brass Anti-Siphon Vacuum Breaker Backflow Preventer, Female NPT Inlet And Outlet, Silicone Disc Seat, Chrome Hood,
Amazon.com
269
$382.99
Zurn 34-950XLT 3/4" 950XLT Double Check Backflow Preventer | Totalrestroom.Com
Total Restroom
$382.99
Zurn 34-950XLT 3/4" 950XLT Double Check Backflow Preventer | Totalrestroom.Com
Total Restroom
$337.51
Hobart 00-975656 OEM Back Flow Preventer
WebstaurantStore
$337.51
Hobart 00-975656 OEM Back Flow Preventer
WebstaurantStore
$269.85
$314.99
Watts LF007 Series 3/4" Lead-Free Copper Silicon Alloy Double Check Valve Backflow Preventer Assembly, Quarter Turn Shutoff, Single Top Entry, NPT
Amazon.com
1
Free shipping
折扣 14%
$269.85
$314.99
Watts LF007 Series 3/4" Lead-Free Copper Silicon Alloy Double Check Valve Backflow Preventer Assembly, Quarter Turn Shutoff, Single Top Entry, NPT
Amazon.com
1
Fan Basics: Air Flow, Static Pressure, and Impedance
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Fan Basics: Air Flow, Static Pressure, and Impedance
2021年10月26日
orientalmotor.com
Backflow
1:56
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已浏览 17.3万 次2019年9月27日
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2:23
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已浏览 7.3万 次2018年3月28日
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已浏览 9.1万 次2019年2月28日
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12:20
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4:30
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已浏览 1.7万 次2021年3月18日
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7:04
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已浏览 6.4万 次2021年4月28日
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4:47
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已浏览 2240 次2017年5月24日
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3:27
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已浏览 10.8万 次2019年11月1日
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7:09
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已浏览 6169 次2019年8月14日
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13:59
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4:13
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已浏览 28.7万 次2020年5月9日
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已浏览 11.4万 次2018年7月13日
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已浏览 17.4万 次2013年2月28日
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已浏览 3725 次2019年9月30日
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购买 Back Flow Units

广告
关于我们的广告
$1,035.45
$1,863.00
Watts 2" 009M2 Backflow Preventer Reduced Pressure Zone Assembly RPZ 2 009M2-QT 0063010 63010
Amazon.com
15
Free shipping
折扣 44%
$1,035.45
$1,863.00
Watts 2" 009M2 Backflow Preventer Reduced Pressure Zone Assembly RPZ 2 009M2-QT 0063010 63010
Amazon.com
15
$1,381.49
$1,910.99
Zurn Wilkins 2-375XL 2" 375XL Reduced Pressure Principle Backflow Preventer
Amazon.com
123
Free shipping
折扣 27%
$1,381.49
$1,910.99
Zurn Wilkins 2-375XL 2" 375XL Reduced Pressure Principle Backflow Preventer
Amazon.com
123
$378.50
$491.99
Zurn Wilkins 1-350XL 1" 350XL Double Check Backflow Preventer
Amazon.com
123
Free shipping
折扣 23%
$378.50
$491.99
Zurn Wilkins 1-350XL 1" 350XL Double Check Backflow Preventer
Amazon.com
123
$694.32
Watts 800M4-QT Series 1-1/4" Bronze Anti-Siphon Pressure Backflow Preventer, Quarter Turn Shutoff, NPT Female Inlet X NPT Female Outlet, Freeze Sensor
Amazon.com
Free shipping
$694.32
Watts 800M4-QT Series 1-1/4" Bronze Anti-Siphon Pressure Backflow Preventer, Quarter Turn Shutoff, NPT Female Inlet X NPT Female Outlet, Freeze Sensor
Amazon.com
Free shipping
$200.48
$334.14
Watts 800M4-QT Series 1" Bronze Anti-Siphon Pressure Backflow Preventer, Quarter Turn Shutoff, NPT Female Inlet X NPT Female Outlet, Freeze Sensor,
Amazon.com
Free shipping
折扣 40%
$200.48
$334.14
Watts 800M4-QT Series 1" Bronze Anti-Siphon Pressure Backflow Preventer, Quarter Turn Shutoff, NPT Female Inlet X NPT Female Outlet, Freeze Sensor,
Amazon.com
Free shipping
$262.51
Zurn Wilkins 1-350 1" 350 Double Check Backflow Preventer
Amazon.com
62
Free shipping
$262.51
Zurn Wilkins 1-350 1" 350 Double Check Backflow Preventer
Amazon.com
62
$598.75
Febco 825Y Series 1" Bronze Reduced Pressure Zone Backflow Preventer Assembly, Quarter Turn Shutoff, NPT End Connections, Y Pattern, Flood Sensor With
Amazon.com
9
Free shipping
$598.75
Febco 825Y Series 1" Bronze Reduced Pressure Zone Backflow Preventer Assembly, Quarter Turn Shutoff, NPT End Connections, Y Pattern, Flood Sensor With
Amazon.com
9
$211.48
Zurn Wilkins 34-350 3/4" 350 Double Check Backflow Preventer
Amazon.com
70
Free shipping
$211.48
Zurn Wilkins 34-350 3/4" 350 Double Check Backflow Preventer
Amazon.com
70
$408.95
Watts 3/4" 009M3 Backflow Preventer Reduced Pressure Zone Assembly RPZ 3/4 009-QT 0063030 63030
Amazon.com
140
Free shipping
$408.95
Watts 3/4" 009M3 Backflow Preventer Reduced Pressure Zone Assembly RPZ 3/4 009-QT 0063030 63030
Amazon.com
140
$495.48
$616.00
Watts SD-3 Series 3/8" Stainless Steel Dual Check Valve Backflow Preventer For Beverage Machine, Male NPT Inlet X Male NPT Outlet, Atmospheric Vent,
Amazon.com
Free shipping
折扣 19%
$495.48
$616.00
Watts SD-3 Series 3/8" Stainless Steel Dual Check Valve Backflow Preventer For Beverage Machine, Male NPT Inlet X Male NPT Outlet, Atmospheric Vent,
Amazon.com
Free shipping
$835.65
$905.09
Watts LF007 Series 2" Lead-Free Copper Silicon Alloy Double Check Valve Backflow Preventer Assembly, Quarter Turn Shutoff, Single Top Entry, NPT
Amazon.com
1
Free shipping
$835.65
$905.09
Watts LF007 Series 2" Lead-Free Copper Silicon Alloy Double Check Valve Backflow Preventer Assembly, Quarter Turn Shutoff, Single Top Entry, NPT
Amazon.com
1
$5,125.99
Zurn Wilkins 4-375A 4" Reduced Pressure Principle Water Backflow Preventer Assembly
Core & Main
$5,125.99
Zurn Wilkins 4-375A 4" Reduced Pressure Principle Water Backflow Preventer Assembly
Core & Main
$4,833.99
Zurn Wilkins 4-350ASTOSY 4" Double Check Water Backflow Preventer Flanged End OSY Gate Valves
Core & Main
$4,833.99
Zurn Wilkins 4-350ASTOSY 4" Double Check Water Backflow Preventer Flanged End OSY Gate Valves
Core & Main
$1,442.99
Zurn 2-950XL3 2" 950XL3 Double Check Backflow Preventer | Totalrestroom.Com
Total Restroom
$1,442.99
Zurn 2-950XL3 2" 950XL3 Double Check Backflow Preventer | Totalrestroom.Com
Total Restroom
$8,543.99
Zurn Wilkins 6-350DA 6" Double Check Valve Water Backflow Preventer Assembly
Core & Main
$8,543.99
Zurn Wilkins 6-350DA 6" Double Check Valve Water Backflow Preventer Assembly
Core & Main
$392.66
$733.50
FEBCO T683040 LF850-QT-FZ 1" Double Check Valve Backflow Preventer Assembly
WebstaurantStore
36
折扣 46%
$392.66
$733.50
FEBCO T683040 LF850-QT-FZ 1" Double Check Valve Backflow Preventer Assembly
WebstaurantStore
36
$178.49
$337.00
Fisher 2932-0002 Backflow Preventer For Fisher Pre-Rinse Units
WebstaurantStore
1
折扣 47%
$178.49
$337.00
Fisher 2932-0002 Backflow Preventer For Fisher Pre-Rinse Units
WebstaurantStore
1
$768.99
$1,115.00
Zurn Elkay 34-975XL 3/4" Reduced Pressure Principle Backflow Assembly - 175 PSI
WebstaurantStore
442
折扣 31%
$768.99
$1,115.00
Zurn Elkay 34-975XL 3/4" Reduced Pressure Principle Backflow Assembly - 175 PSI
WebstaurantStore
442