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Backflow Valve(492)
Uses item details. Price when purchased online
Merrill mfg BVBADNL75 Brass Vacuum Breaker Valve, 3/4 inch, Backflow Preventor for Drain Pipes $16.00

Sponsored
$1600
current price $16.00Merrill mfg BVBADNL75 Brass Vacuum Breaker Valve, 3/4 inch, Backflow Preventor for Drain Pipes
44.8 out of 5 Stars. 4 reviews
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Merrill Mfg CVNL100 No Lead Brass Check Valve for Well, 1", 700 Series $20.00

Sponsored
$2000
current price $20.00Merrill Mfg CVNL100 No Lead Brass Check Valve for Well, 1", 700 Series
94.9 out of 5 Stars. 9 reviews
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VEVOR Anti-Siphon Frost-Proof Sillcock, 12" Freeze Proof Outdoor Faucet Bib with Backflow Preventer, 1/2" Push-to-Fit Connector X 3/4" Hose Bibb, No Lead Frost-free Spigot for PEX Copper CPVC Pipes $30.99

Sponsored
$3099
current price $30.99VEVOR Anti-Siphon Frost-Proof Sillcock, 12" Freeze Proof Outdoor Faucet Bib with Backflow Preventer, 1/2" Push-to-Fit Connector X 3/4" Hose Bibb, No Lead Frost-free Spigot for PEX Copper CPVC Pipes
DANSPEED 1/2" Stainless Steel Vertical Check Valve NPT Spring Loaded In-line From $12.49

Sponsored
From$1249
DANSPEED 1/2" Stainless Steel Vertical Check Valve NPT Spring Loaded In-line
25 out of 5 Stars. 2 reviews
3/4 in. Bronze Double Check Valve Backflow Preventer Assembly Quarter Turn Shutoff with Freeze Sensor $249.77

$24977
current price $249.773/4 in. Bronze Double Check Valve Backflow Preventer Assembly Quarter Turn Shutoff with Freeze Sensor
Merrill mfg BVBADNL75 Brass Vacuum Breaker Valve, 3/4 inch, Backflow Preventor for Drain Pipes $16.00

$1600
current price $16.00Merrill mfg BVBADNL75 Brass Vacuum Breaker Valve, 3/4 inch, Backflow Preventor for Drain Pipes
44.8 out of 5 Stars. 4 reviews
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Backflow Preventer Valve for Shower & Floor Drains | One-Way Sewer Drain Valve | Prevents Water Backflow & Odors | Metal + PC Construction | 1-Piece Set From $6.17
From$617
Backflow Preventer Valve for Shower & Floor Drains | One-Way Sewer Drain Valve | Prevents Water Backflow & Odors | Metal + PC Construction | 1-Piece Set
Midline Valve PVC Inline Check Valve for Backflow Prevention; 1'' Solvent Connections; White Plastic From $8.87

4 options
Available in additional 4 optionsFrom$887
Midline Valve PVC Inline Check Valve for Backflow Prevention; 1'' Solvent Connections; White Plastic
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Apollo Valves Dual Check Backflow Preventer,3/8 in 4C10202A $133.88

$13388
current price $133.88Apollo Valves Dual Check Backflow Preventer,3/8 in 4C10202A
Watts 1 in. D X 1 in. D FNPT x FNPT Brass Backflow Preventer Double Check Valve $284.95

$28495
current price $284.95Watts 1 in. D X 1 in. D FNPT x FNPT Brass Backflow Preventer Double Check Valve
KFFKFF 12" Frost-Proof Outdoor Faucet with Anti-Siphon and Backflow Prevention, 1/2" Push-to-Fit Connector x 3/4" Hose Bibb, Lead-Free Spigot for PEX, Copper, and CPVC Pipes $24.99

Sponsored
$2499
current price $24.99KFFKFF 12" Frost-Proof Outdoor Faucet with Anti-Siphon and Backflow Prevention, 1/2" Push-to-Fit Connector x 3/4" Hose Bibb, Lead-Free Spigot for PEX, Copper, and CPVC Pipes
15 out of 5 Stars. 1 reviews
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KFFKFF 12-Inch Frost-Free Sillcock, 1/2" PTC x 3/4" MHT Hose Bibb, Lead-Free Brass Anti-Siphon Valve, Push-to-Connect Plumbing Fitting, Works with PEX, Copper, and CPVC Pipes $22.90

Sponsored
$2290
current price $22.90KFFKFF 12-Inch Frost-Free Sillcock, 1/2" PTC x 3/4" MHT Hose Bibb, Lead-Free Brass Anti-Siphon Valve, Push-to-Connect Plumbing Fitting, Works with PEX, Copper, and CPVC Pipes
yaaqii PVC Check Valve Backflow Prevention Valve Backflow Water Valve Prevent Backflow From $16.73

2 options
Available in additional 2 optionsFrom$1673
yaaqii PVC Check Valve Backflow Prevention Valve Backflow Water Valve Prevent Backflow
PVC Check Valve 1/2 Inch - 3 Pack - Backflow Preventer, FNPT Threaded, NSF Certified - Water, Irrigation, Well Pump, HVAC $58.14

$5814
current price $58.14PVC Check Valve 1/2 Inch - 3 Pack - Backflow Preventer, FNPT Threaded, NSF Certified - Water, Irrigation, Well Pump, HVAC
Brass Backflow Ball Valve 1 in. FPT | BBVB-100$$Plumbing & HVAC $50.92

$5092
current price $50.92Brass Backflow Ball Valve 1 in. FPT | BBVB-100$$Plumbing & HVAC
1-1/2inch CV-150 Sump Pump Check Valve, Spring Loaded Flapper for Backflow Prevention, Silent Check Silver & Black Plastic $18.91 Was $21.20

Now$1891
current price Now $18.91, Was $21.20$21.20
1-1/2inch CV-150 Sump Pump Check Valve, Spring Loaded Flapper for Backflow Prevention, Silent Check Silver & Black Plastic
15 out of 5 Stars. 1 reviews
1/2 NPT. Backflow Preventer And Boiler Fill Valve $147.13 Was $163.69

Now$14713
current price Now $147.13, Was $163.69$163.69
1/2 NPT. Backflow Preventer And Boiler Fill Valve
Cosmostar 1/4" NPT Stainless Steel 316 In-Line Ball Check Valve 6000 PSI One Way Spring Check Valve for Water, Oil & Gas, Anti-Corrosion Backflow Preventer with Viton O-Ring, Male x Female(NRVN02) $65.98

$6598
current price $65.98Cosmostar 1/4" NPT Stainless Steel 316 In-Line Ball Check Valve 6000 PSI One Way Spring Check Valve for Water, Oil & Gas, Anti-Corrosion Backflow Preventer with Viton O-Ring, Male x Female(NRVN02)
Dreamhall Pvc Check Valve Backflow Prevention Valve Backflow Water Valve Prevent Backflow,B

2 options
Available in additional 2 optionsDreamhall Pvc Check Valve Backflow Prevention Valve Backflow Water Valve Prevent Backflow,B
Reduced price WeiLaiKeQi PVC Drainage Pipe Floor Drain Backflow Preventer Valve for Plumbing Fixtures M From $11.99

4 options
Available in additional 4 optionsFrom$1199
WeiLaiKeQi PVC Drainage Pipe Floor Drain Backflow Preventer Valve for Plumbing Fixtures M
KFFKFF 12-Inch Frost-Free Sillcock, 1/2" PTC x 3/4" MHT Hose Bibb, Lead-Free Brass Anti-Siphon Valve, Push-to-Connect Plumbing Fitting, Works with PEX, Copper, and CPVC Pipes $24.90 Was $27.99

Sponsored
Now$2490
current price Now $24.90, Was $27.99$27.99
KFFKFF 12-Inch Frost-Free Sillcock, 1/2" PTC x 3/4" MHT Hose Bibb, Lead-Free Brass Anti-Siphon Valve, Push-to-Connect Plumbing Fitting, Works with PEX, Copper, and CPVC Pipes
25 out of 5 Stars. 2 reviews
VEVOR 12-Inch Frost-Free Sillcock, 1/2" PTC x 3/4" MHT Hose Bibb, Anti-Siphon Lead-Free Brass Valve, Push-to-Connect Brass Plumbing Fitting, Compatible with PEX, Copper, CPVC Pipes $31.99

Sponsored
$3199
current price $31.99VEVOR 12-Inch Frost-Free Sillcock, 1/2" PTC x 3/4" MHT Hose Bibb, Anti-Siphon Lead-Free Brass Valve, Push-to-Connect Brass Plumbing Fitting, Compatible with PEX, Copper, CPVC Pipes
15 out of 5 Stars. 1 reviews
IPW Industries Inc. | SMC 6850090 Inline Poppet Backflow Preventer Check Valve for Home Improvement, Water Pump System, Kitchen Plumbing & Irrigation $21.99

$2199
current price $21.99IPW Industries Inc. | SMC 6850090 Inline Poppet Backflow Preventer Check Valve for Home Improvement, Water Pump System, Kitchen Plumbing & Irrigation
Midline Valve PVC Inline Check Valve for Backflow Prevention; 1/2'' FIP; White Plastic From $8.87

6 options
Available in additional 6 optionsFrom$887
Midline Valve PVC Inline Check Valve for Backflow Prevention; 1/2'' FIP; White Plastic
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Tineasur PVC One Way Check Valve White ABS Rubber Anti Backflow Valve for Home Plumbing $18.99

$1899
current price $18.99Tineasur PVC One Way Check Valve White ABS Rubber Anti Backflow Valve for Home Plumbing
Midline Valve Swing Check Valve, Backflow Prevention, Led-Free, 1 in. Sweat Connections, Cast Brass From $39.93

8 options
Available in additional 8 optionsFrom$3993
Midline Valve Swing Check Valve, Backflow Prevention, Led-Free, 1 in. Sweat Connections, Cast Brass
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Rain ASVF Series Electric Irrigation Valve 3/4", 24 VAC, Flow Control & Backflow Preventer $41.13

$4113
current price $41.13Rain ASVF Series Electric Irrigation Valve 3/4", 24 VAC, Flow Control & Backflow Preventer
TOP-MAX 3/4" (20mm)-G1/2" Female Or Male Thread Backflow Prevention Valve One-Way Backflow Prevention Hose Valve From $6.76

5 options
Available in additional 5 optionsFrom$676
TOP-MAX 3/4" (20mm)-G1/2" Female Or Male Thread Backflow Prevention Valve One-Way Backflow Prevention Hose Valve
Midline Valve Inline Spring Loaded Check Valve, Backflow Prevention, Led-Free, 1 in. Sweat Connections, Cast Brass From $31.82

4 options
Available in additional 4 optionsFrom$3182
Midline Valve Inline Spring Loaded Check Valve, Backflow Prevention, Led-Free, 1 in. Sweat Connections, Cast Brass
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Midline Valve Swing Check Valve, Backflow Prevention, Lead-Free, 1/2 in. Sweat Connections, Cast Brass From $11.42

9 options
Available in additional 9 optionsFrom$1142
Midline Valve Swing Check Valve, Backflow Prevention, Lead-Free, 1/2 in. Sweat Connections, Cast Brass
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findmall 7 Spool Hydraulic Directional Control Valve 11gpm,40L,2 Joystick,BSPP Interface $104.49

Sponsored
$10449
current price $104.49findmall 7 Spool Hydraulic Directional Control Valve 11gpm,40L,2 Joystick,BSPP Interface
18.5-10.3-19.5mm Silicone One-Way Valve Silicone Duckbill Valve Duckbill Valve Check Valve Prevent Liquid Gas Backflow 10PCS $28.06
$2806
current price $28.0618.5-10.3-19.5mm Silicone One-Way Valve Silicone Duckbill Valve Duckbill Valve Check Valve Prevent Liquid Gas Backflow 10PCS
Reduced price Uxcell Check Valve, Single Union Check Valve Slip Swing No-return Valve for Backflow Prevention 1" From $12.99

4 options
Available in additional 4 optionsFrom$1299
Uxcell Check Valve, Single Union Check Valve Slip Swing No-return Valve for Backflow Prevention 1"
4F Flood Guard Float Model, 4-Inch Small - Sewer Backflow Preventer, Drain Check Valve, Basement Flood Protection, Easy Install $29.46 Was $35.87

Now$2946
current price Now $29.46, Was $35.87$35.87
4F Flood Guard Float Model, 4-Inch Small - Sewer Backflow Preventer, Drain Check Valve, Basement Flood Protection, Easy Install
Apollo Valves Reduced Pressure Zone Backflow Preventer 4ALF208T2F $1,187.81 Was $1,278.09

Now$1,18781
current price Now $1,187.81, Was $1,278.09$1,278.09
Apollo Valves Reduced Pressure Zone Backflow Preventer 4ALF208T2F
Legend Valve 115-104NL Dual Check Backflow Preventer Valve 3/4 in FNPT $58.68

$5868
current price $58.68Legend Valve 115-104NL Dual Check Backflow Preventer Valve 3/4 in FNPT
Apollo Valves Backflow Valve,Forged Brass,1/2" Size 4ALF4A33AM $94.32

$9432
current price $94.32Apollo Valves Backflow Valve,Forged Brass,1/2" Size 4ALF4A33AM
1/2 Inch 9D-M3 Backflow Preventer Brass Dual Check Valve with Intermediate Atmospheric Vent,1/2 Inch,Female Union Inlet and Outlet,190T012,Replacement for Watts$$Plumbing & HVAC $79.98

$7998
current price $79.981/2 Inch 9D-M3 Backflow Preventer Brass Dual Check Valve with Intermediate Atmospheric Vent,1/2 Inch,Female Union Inlet and Outlet,190T012,Replacement for Watts$$Plumbing & HVAC
Clearance BAOPAI One Way Drain Valve Backflow Preventer for Floor Drains - Blocks Odors and Backflow, Easy to Install in Showers and Sinks Was $5.99

BAOPAI One Way Drain Valve Backflow Preventer for Floor Drains - Blocks Odors and Backflow, Easy to Install in Showers and Sinks
1/2inch A10-3050 Transparent Vacuum Breaker Check Valve Replace B & B Model 571 RV Black Tank Flush Anti Backflow Valve $17.31

$1731
current price $17.311/2inch A10-3050 Transparent Vacuum Breaker Check Valve Replace B & B Model 571 RV Black Tank Flush Anti Backflow Valve
Apollo Valves Reduced Pressure Zone Backflow Preventer 4ALF206T2F $960.43 Was $1,033.42

Now$96043
current price Now $960.43, Was $1,033.42$1,033.42
Apollo Valves Reduced Pressure Zone Backflow Preventer 4ALF206T2F
Apollo Valves Reduced Pressure Zone Backflow Preventer 4ALF205A2F $567.65 $567.65/1

$56765
current price $567.65$567.65/1
Apollo Valves Reduced Pressure Zone Backflow Preventer 4ALF205A2F
Silents Check Valves with Clamps Sump Pump Check Valves for Backflow Prevention From $19.87

2 options
Available in additional 2 optionsFrom$1987
Silents Check Valves with Clamps Sump Pump Check Valves for Backflow Prevention
5-2.2-10mm Silicone One-Way Valve Silicone Duckbill Valve Duckbill Valve Check Valve Prevent Liquid Gas Backflow 10PCS $26.83
$2683
current price $26.835-2.2-10mm Silicone One-Way Valve Silicone Duckbill Valve Duckbill Valve Check Valve Prevent Liquid Gas Backflow 10PCS
None Return Air Valves Backflow Preventer Exhaust Duct Check Valves Plastic Inline Backdrafts Damper for Kitchen Bathroom From $8.69
From$869
None Return Air Valves Backflow Preventer Exhaust Duct Check Valves Plastic Inline Backdrafts Damper for Kitchen Bathroom
Anti-backflow Floor Drain,magnetic Levitation Smell Proof,shower Sink Check Valve,one Way Sewer Seal Plug $28.90

$2890
current price $28.90Anti-backflow Floor Drain,magnetic Levitation Smell Proof,shower Sink Check Valve,one Way Sewer Seal Plug
WATTS Backflow Check Relief Valve, 550000 Btu $116.90

$11690
current price $116.90WATTS Backflow Check Relief Valve, 550000 Btu
NIAIZEK Stainless Steel Automatic Silent Check Valve for Kitchen Range Hood Exhaust, Prevents Smoke Backflow and $8.11

$811
current price $8.11NIAIZEK Stainless Steel Automatic Silent Check Valve for Kitchen Range Hood Exhaust, Prevents Smoke Backflow and
(Price/Each)Honeywell 50043683-001 Backflow Prevention Valve For Truesteam Replaces 50030142-001 $103.55

$10355
current price $103.55(Price/Each)Honeywell 50043683-001 Backflow Prevention Valve For Truesteam Replaces 50030142-001
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