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$20.99
OTR Double Check Valve | New Check Valve-Double | OTR278614
FleetPride
$20.99
OTR Double Check Valve | New Check Valve-Double | OTR278614
FleetPride
$55.99
Power Products DC4 Type Double Way Check Valve | Dc4 Type Valve | 278598P
FleetPride
$55.99
Power Products DC4 Type Double Way Check Valve | Dc4 Type Valve | 278598P
FleetPride
$20.39
Power Products Double Check Valve | Double Check Valve 3-3/8" Npt Port | 278614P
FleetPride
$20.39
Power Products Double Check Valve | Double Check Valve 3-3/8" Npt Port | 278614P
FleetPride
$64.99
Sealco Check Valve | 2-Way Check Valve | 7200
FleetPride
$64.99
Sealco Check Valve | 2-Way Check Valve | 7200
FleetPride
$79.99
Haldex Brake Valve | Two-Way Check Valve-Shuttle Type | KN25110
FleetPride
$79.99
Haldex Brake Valve | Two-Way Check Valve-Shuttle Type | KN25110
FleetPride
$815.65
$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
47
Free shipping
$815.65
$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
$117.71
Watts Dual Check Valve: LF7, 1 in Pipe Size, FNPT X FNPT, 3.88 in Overall Lg, Copper Silicon Alloy Model: 1 LF7 U2-2
Grainger
$117.71
Watts Dual Check Valve: LF7, 1 in Pipe Size, FNPT X FNPT, 3.88 in Overall Lg, Copper Silicon Alloy Model: 1 LF7 U2-2
Grainger
$1,042.99
Zurn Wilkins 2-950XLT 2" Double Check Water Valve Backflow Preventer Assembly
Core & Main
$1,042.99
Zurn Wilkins 2-950XLT 2" Double Check Water Valve Backflow Preventer Assembly
Core & Main
$116.81
Watts Dual Check Valve: LF7, 3/4 in Pipe Size, FNPT X FNPT, 3.63 in Overall Lg, Copper Silicon Alloy Model: 3/4 LF7 U2-2
Grainger
$116.81
Watts Dual Check Valve: LF7, 3/4 in Pipe Size, FNPT X FNPT, 3.63 in Overall Lg, Copper Silicon Alloy Model: 3/4 LF7 U2-2
Grainger
$167.39
Watts LF7RU2-2 Dual Check Valve 1/2 Inch
Voomi Supply
30-day returns (most items)
$167.39
Watts LF7RU2-2 Dual Check Valve 1/2 Inch
Voomi Supply
$4,107.99
Zurn Wilkins 3-350OSY 3" Double Check Valve Water Backflow Preventer OSY Gate Valves FLG
Core & Main
$4,107.99
Zurn Wilkins 3-350OSY 3" Double Check Valve Water Backflow Preventer OSY Gate Valves FLG
Core & Main
$4,044.99
Zurn Wilkins 212-350ASTOSY 2 1/2" Water Double Check Backflow Valve Preventer Assembly Flanged End OSY Gate Valves
Core & Main
$4,044.99
Zurn Wilkins 212-350ASTOSY 2 1/2" Water Double Check Backflow Valve Preventer Assembly Flanged End OSY Gate Valves
Core & Main
$300.00
Stainless Steel Clamp Valves Wafer Duo Door Check Valve Non-Return One-Way Valve
eBay
$300.00
Stainless Steel Clamp Valves Wafer Duo Door Check Valve Non-Return One-Way Valve
eBay
$1,338.29
Double Check Valve Assembly Bronze Apollo 4ALF-100 Series - 1-1/2 Inch FNPT Connection
Pool Web
$1,338.29
Double Check Valve Assembly Bronze Apollo 4ALF-100 Series - 1-1/2 Inch FNPT Connection
Pool Web
$143.60
Watts Vacuum-Breaker Valves: Valve Type: Dual Check Vacuum Breaker, Body Material: Lead-Free Brass | Part 0792099
MSC Direct
25% Off*
$143.60
Watts Vacuum-Breaker Valves: Valve Type: Dual Check Vacuum Breaker, Body Material: Lead-Free Brass | Part 0792099
MSC Direct
$205.56
Watts Dual Check Valve: SD-2, 3/8 in Pipe Size, Flare X Flare, 2.5 Gpm Flow Rate, 3 in Overall Lg Model: SD2-MF 3/8"
Grainger
$205.56
Watts Dual Check Valve: SD-2, 3/8 in Pipe Size, Flare X Flare, 2.5 Gpm Flow Rate, 3 in Overall Lg Model: SD2-MF 3/8"
Grainger
$127.49
Watts 0072206 1/2" X 1/2" LF7RU2-U2 Lead Free Dual Check Valve | Supplyhouse.Com
SupplyHouse.com
$127.49
Watts 0072206 1/2" X 1/2" LF7RU2-U2 Lead Free Dual Check Valve | Supplyhouse.Com
SupplyHouse.com
$175.09
Watts 0061952 9DS-M3 9D Series 1/2" Union X Union Dual Check Valve With Intermediate Atmospheric Vent
WebstaurantStore
$175.09
Watts 0061952 9DS-M3 9D Series 1/2" Union X Union Dual Check Valve With Intermediate Atmospheric Vent
WebstaurantStore
$31.54
Double Check Valve | DC-1 | 3/8 NTP
TruckSpring
90-day returns (most items)
$31.54
Double Check Valve | DC-1 | 3/8 NTP
TruckSpring
$135.94
Watts 88006062 1" X 1" LF7RU2L-2 Lead Free Dual Check Valve (FNPT X FNPT) | Supplyhouse.Com
SupplyHouse.com
$135.94
Watts 88006062 1" X 1" LF7RU2L-2 Lead Free Dual Check Valve (FNPT X FNPT) | Supplyhouse.Com
SupplyHouse.com
$120.73
Watts Dual Check Valve: LF7R, 1/2 in Pipe Size, FNPT X FNPT, 15.5 Gpm Flow Rate, 3.63 in Overall Lg Model: LF7RU2-2
Grainger
$120.73
Watts Dual Check Valve: LF7R, 1/2 in Pipe Size, FNPT X FNPT, 15.5 Gpm Flow Rate, 3.63 in Overall Lg Model: LF7RU2-2
Grainger
$402.21
Watts Dual Check Valve: SD-3, 3/8 in Pipe Size, FNPT X MNPT, 2.5 Gpm Flow Rate, 4.5 in Overall Lg Model: SD3-MF 3/8"
Grainger
$402.21
Watts Dual Check Valve: SD-3, 3/8 in Pipe Size, FNPT X MNPT, 2.5 Gpm Flow Rate, 4.5 in Overall Lg Model: SD3-MF 3/8"
Grainger
$115.99
WATTS Dual Check Valve, Brass, 1/2", 0072203
Zoro.com
30-day returns (most items)
$115.99
WATTS Dual Check Valve, Brass, 1/2", 0072203
Zoro.com
$110.10
$230.80
T&S 007842-45 Dual Check Valve Backflow Preventer, 1/2" NPT Female
KaTom Restaurant Supply, Inc.
1
52% off
$110.10
$230.80
T&S 007842-45 Dual Check Valve Backflow Preventer, 1/2" NPT Female
KaTom Restaurant Supply, Inc.
$175.09
Watts 0061952 1/2" 9DS-M3 Dual Check Valve | Supplyhouse.Com
SupplyHouse.com
$175.09
Watts 0061952 1/2" 9DS-M3 Dual Check Valve | Supplyhouse.Com
SupplyHouse.com
$101.84
WATTS 3/4" FNPT Bronze Dual Check Valve, 3/4 LF7 U2-2
Zoro.com
30-day returns (most items)
$101.84
WATTS 3/4" FNPT Bronze Dual Check Valve, 3/4 LF7 U2-2
Zoro.com
$575.13
Watts T063232 LF007M1-QT-FZ 1" Double Check Valve Assembly
WebstaurantStore
$575.13
Watts T063232 LF007M1-QT-FZ 1" Double Check Valve Assembly
WebstaurantStore
$111.59
WATTS 1" FNPT Bronze Dual Check Valve, 1 LF7 U2-2
Zoro.com
30-day returns (most items)
$111.59
WATTS 1" FNPT Bronze Dual Check Valve, 1 LF7 U2-2
Zoro.com
$108.99
Wilkins Dual Check Valve: 700XL, 1 in Pipe Size, FNPT X FNPT, 40 Gpm Flow Rate, 1 in Overall Lg, NPT Model: 1UFX1F-700XL
Grainger
1
$108.99
Wilkins Dual Check Valve: 700XL, 1 in Pipe Size, FNPT X FNPT, 40 Gpm Flow Rate, 1 in Overall Lg, NPT Model: 1UFX1F-700XL
Grainger
$2,008.11
Watts Double Check Valve Assembly: LF007, 2 in Pipe Size, FNPT X FNPT, 25.75 in Overall Lg, Plastic Model: 2 LF007M1-QT-S-FZ
Grainger
$2,008.11
Watts Double Check Valve Assembly: LF007, 2 in Pipe Size, FNPT X FNPT, 25.75 in Overall Lg, Plastic Model: 2 LF007M1-QT-S-FZ
Grainger
$568.68
Watts 0122592 1-1/4" LF07S-U2-3 Dual Check Valve Backflow Preventer, Residential Fire Sprinkler System, Union FNPT Inlet X MNPT | Supplyhouse.Com
SupplyHouse.com
$568.68
Watts 0122592 1-1/4" LF07S-U2-3 Dual Check Valve Backflow Preventer, Residential Fire Sprinkler System, Union FNPT Inlet X MNPT | Supplyhouse.Com
SupplyHouse.com
$174.61
Watts 0072207 1" X 3/4" LF7R10-U2L Dual Check Valve, 4-1/2" Length, Lead Free (Female Meter X FNPT) | Supplyhouse.Com
SupplyHouse.com
$174.61
Watts 0072207 1" X 3/4" LF7R10-U2L Dual Check Valve, 4-1/2" Length, Lead Free (Female Meter X FNPT) | Supplyhouse.Com
SupplyHouse.com
$106.99
Wilkins Dual Check Valve: 700XL, 3/4 in Pipe Size, FNPT X FNPT, 25 Gpm Flow Rate, 4.5 in Overall Lg Model: 34UFX34F-700XL
Grainger
$106.99
Wilkins Dual Check Valve: 700XL, 3/4 in Pipe Size, FNPT X FNPT, 25 Gpm Flow Rate, 4.5 in Overall Lg Model: 34UFX34F-700XL
Grainger
$165.53
Watts Dual Check W Atmospheric Vent: 9D, 1/2 in Pipe Size, FNPT X FNPT, 18.7 Gpm Flow Rate, Brass Model: 9D-M3-1/2"
Grainger
$165.53
Watts Dual Check W Atmospheric Vent: 9D, 1/2 in Pipe Size, FNPT X FNPT, 18.7 Gpm Flow Rate, Brass Model: 9D-M3-1/2"
Grainger
$61.99
Bendix 3/8" NPT Male DC-4 Double Check Valve | Dbl Check Valve | 278598N
FleetPride
$61.99
Bendix 3/8" NPT Male DC-4 Double Check Valve | Dbl Check Valve | 278598N
FleetPride
$167.58
$328.00
Watts 0061935 9D-M3 9D Series 1/2" FNPT Union X FNPT Union Dual Check Valve With Intermediate Atmospheric Vent
WebstaurantStore
Affordable price · Works well · brass
48% off
$167.58
$328.00
Watts 0061935 9D-M3 9D Series 1/2" FNPT Union X FNPT Union Dual Check Valve With Intermediate Atmospheric Vent
WebstaurantStore
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    Shop duo check valve

    Sponsored
    About our ads
    $20.99
    OTR Double Check Valve | New Check Valve-Double | OTR278614
    FleetPride
    $20.99
    OTR Double Check Valve | New Check Valve-Double | OTR278614
    FleetPride
    $55.99
    Power Products DC4 Type Double Way Check Valve | Dc4 Type Valve | 278598P
    FleetPride
    $55.99
    Power Products DC4 Type Double Way Check Valve | Dc4 Type Valve | 278598P
    FleetPride
    $20.39
    Power Products Double Check Valve | Double Check Valve 3-3/8" Npt Port | 278614P
    FleetPride
    $20.39
    Power Products Double Check Valve | Double Check Valve 3-3/8" Npt Port | 278614P
    FleetPride
    $64.99
    Sealco Check Valve | 2-Way Check Valve | 7200
    FleetPride
    $64.99
    Sealco Check Valve | 2-Way Check Valve | 7200
    FleetPride
    $79.99
    Haldex Brake Valve | Two-Way Check Valve-Shuttle Type | KN25110
    FleetPride
    $79.99
    Haldex Brake Valve | Two-Way Check Valve-Shuttle Type | KN25110
    FleetPride
    $815.65
    $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
    47
    Free shipping
    $815.65
    $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
    $117.71
    Watts Dual Check Valve: LF7, 1 in Pipe Size, FNPT X FNPT, 3.88 in Overall Lg, Copper Silicon Alloy Model: 1 LF7 U2-2
    Grainger
    $117.71
    Watts Dual Check Valve: LF7, 1 in Pipe Size, FNPT X FNPT, 3.88 in Overall Lg, Copper Silicon Alloy Model: 1 LF7 U2-2
    Grainger
    $1,042.99
    Zurn Wilkins 2-950XLT 2" Double Check Water Valve Backflow Preventer Assembly
    Core & Main
    $1,042.99
    Zurn Wilkins 2-950XLT 2" Double Check Water Valve Backflow Preventer Assembly
    Core & Main
    $116.81
    Watts Dual Check Valve: LF7, 3/4 in Pipe Size, FNPT X FNPT, 3.63 in Overall Lg, Copper Silicon Alloy Model: 3/4 LF7 U2-2
    Grainger
    $116.81
    Watts Dual Check Valve: LF7, 3/4 in Pipe Size, FNPT X FNPT, 3.63 in Overall Lg, Copper Silicon Alloy Model: 3/4 LF7 U2-2
    Grainger
    $167.39
    Watts LF7RU2-2 Dual Check Valve 1/2 Inch
    Voomi Supply
    30-day returns (most items)
    $167.39
    Watts LF7RU2-2 Dual Check Valve 1/2 Inch
    Voomi Supply
    $4,107.99
    Zurn Wilkins 3-350OSY 3" Double Check Valve Water Backflow Preventer OSY Gate Valves FLG
    Core & Main
    $4,107.99
    Zurn Wilkins 3-350OSY 3" Double Check Valve Water Backflow Preventer OSY Gate Valves FLG
    Core & Main
    $4,044.99
    Zurn Wilkins 212-350ASTOSY 2 1/2" Water Double Check Backflow Valve Preventer Assembly Flanged End OSY Gate Valves
    Core & Main
    $4,044.99
    Zurn Wilkins 212-350ASTOSY 2 1/2" Water Double Check Backflow Valve Preventer Assembly Flanged End OSY Gate Valves
    Core & Main
    $300.00
    Stainless Steel Clamp Valves Wafer Duo Door Check Valve Non-Return One-Way Valve
    eBay
    $300.00
    Stainless Steel Clamp Valves Wafer Duo Door Check Valve Non-Return One-Way Valve
    eBay
    $1,338.29
    Double Check Valve Assembly Bronze Apollo 4ALF-100 Series - 1-1/2 Inch FNPT Connection
    Pool Web
    $1,338.29
    Double Check Valve Assembly Bronze Apollo 4ALF-100 Series - 1-1/2 Inch FNPT Connection
    Pool Web
    $143.60
    Watts Vacuum-Breaker Valves: Valve Type: Dual Check Vacuum Breaker, Body Material: Lead-Free Brass | Part 0792099
    MSC Direct
    25% Off*
    $143.60
    Watts Vacuum-Breaker Valves: Valve Type: Dual Check Vacuum Breaker, Body Material: Lead-Free Brass | Part 0792099
    MSC Direct
    $205.56
    Watts Dual Check Valve: SD-2, 3/8 in Pipe Size, Flare X Flare, 2.5 Gpm Flow Rate, 3 in Overall Lg Model: SD2-MF 3/8"
    Grainger
    $205.56
    Watts Dual Check Valve: SD-2, 3/8 in Pipe Size, Flare X Flare, 2.5 Gpm Flow Rate, 3 in Overall Lg Model: SD2-MF 3/8"
    Grainger
    $127.49
    Watts 0072206 1/2" X 1/2" LF7RU2-U2 Lead Free Dual Check Valve | Supplyhouse.Com
    SupplyHouse.com
    $127.49
    Watts 0072206 1/2" X 1/2" LF7RU2-U2 Lead Free Dual Check Valve | Supplyhouse.Com
    SupplyHouse.com
    $175.09
    Watts 0061952 9DS-M3 9D Series 1/2" Union X Union Dual Check Valve With Intermediate Atmospheric Vent
    WebstaurantStore
    $175.09
    Watts 0061952 9DS-M3 9D Series 1/2" Union X Union Dual Check Valve With Intermediate Atmospheric Vent
    WebstaurantStore