Watts Backflow Preventers

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Safe Water Starts with Prevention

Shop high-quality backflow prevention products engineered to ensure clean, safe water in every system.

Popular Backflow Preventer Types

Reduced Pressure Zone Assembly Reduced Pressure Zone Assembly
Reduced Pressure Detector Assembly Reduced Pressure Detector Assembly
Double Check Detector Assembly Double Check Detector Assembly
Double Check Valve Assembly Double Check Valve Assembly

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111 Products

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111 Products
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2 in. Cast Copper Silicon Alloy FPT Reduced Pressure Zone Assembly with Quarter Turn Shutoff Valves and Flood Sensor
Watts Series LF009

2 in. Cast Copper Silicon Alloy FPT Reduced Pressure Zone Assembly with Quarter Turn Shutoff Valves and Flood Sensor
Part #WLF009M2QTFSK
Item #9880568
Mfr. Part #88004115
5 out of 5 Customer Rating
  • Requires Certification

  • Lead Law Compliant

 Points
EACH
Requires Certification
How to get it:
  • Pick Up
    0  Available
    Available Nearby
    Pick Up  Not Available
    Not available in OH
  • Shipping
    Available
    Shipping Not Available
    Not available in OH
3/8 in. Stainless Steel FPT Dual Check Valve with Atmospheric Vent and Strainer
Watts Series SD-3

3/8 in. Stainless Steel FPT Dual Check Valve with Atmospheric Vent and Strainer
Part #WSD3FNC
Item #2980261
Mfr. Part #0061667
4.5 out of 5 Customer Rating
  • Requires Certification

  • Lead Law Compliant

 Points
EACH
Requires Certification
How to get it:
  • Pick Up
    4  Available
    Available Nearby
    Pick Up  Not Available
    Not available in OH
  • Shipping
    Available
    Shipping Not Available
    Not available in OH
3/4 in Brass Union Double Check Valve with Strainer
Watts Series 9D

3/4 in Brass Union Double Check Valve with Strainer
Part #W9DM2F
Item #18004
Mfr. Part #0061888
4.4 out of 5 Customer Rating
  • Requires Certification

  • Not Compliant, Approved for Non-Potable Water Applications

 Points
EACH
Requires Certification
How to get it:
  • Pick Up
    1  Available
    Available Nearby
    Pick Up  Not Available
    Not available in OH
  • Shipping
    Available
    Shipping Not Available
    Not available in OH
3/4 in. Cast Copper Silicon Alloy FPT Reduced Pressure Zone Assembly with Quarter Turn Shutoff Valves and Flood Sensor
Watts Series LF009

3/4 in. Cast Copper Silicon Alloy FPT Reduced Pressure Zone Assembly with Quarter Turn Shutoff Valves and Flood Sensor
Part #WLF009M3QTFSF
Item #9880565
Mfr. Part #88004111
5 out of 5 Customer Rating
  • Requires Certification

  • Lead Law Compliant

 Points
EACH
Requires Certification
How to get it:
  • Pick Up
    0  Available
    Available Nearby
    Pick Up  Not Available
    Not available in OH
  • Shipping
    Available
    Shipping Not Available
    Not available in OH
1 in. Stainless Steel Double Check Valve Assembly with Quarter-Turn Ball Valve
Watts SS007 Series

1 in. Stainless Steel Double Check Valve Assembly with Quarter-Turn Ball Valve
Part #W1SS007M1QTFZ
Item #10248748
Mfr. Part #T062692
4.9 out of 5 Customer Rating
  • Requires Certification

Points
EACH
Requires Certification
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How to get it:
  • Pick Up
    0  Available
    0 nearby
    Pick Up  Not Available
    Not available in OH
  • Shipping
    Not Available
    Shipping Not Available
    Not available in OH
1/2 in. Stainless Steel FPT Reduced Pressure Zone Assembly with Quarter Turn Shutoff Valves and Flood Sensor
Watts Series SS009

1/2 in. Stainless Steel FPT Reduced Pressure Zone Assembly with Quarter Turn Shutoff Valves and Flood Sensor
Part #WSS009M3QTFSD
Item #9888831
Mfr. Part #88004045
3.2 out of 5 Customer Rating
  • Requires Certification

Points
EACH
Requires Certification
How to get it:
  • Pick Up
    0  Available
    0 nearby
    Pick Up  Not Available
    Not available in OH
  • Shipping
    Available
    Shipping Not Available
    Not available in OH
3 in. Stainless Steel Flanged 175 psi Backflow Preventer
Watts Series 757

3 in. Stainless Steel Flanged 175 psi Backflow Preventer
Part #W757NRSM
Item #1845369
Mfr. Part #0111523
3.3 out of 5 Customer Rating
  • Requires Certification

  • Lead Law Compliant

 Points
EACH
Requires Certification
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How to get it:
  • Pick Up
    0  Available
    0 nearby
    Pick Up  Not Available
    Not available in OH
  • Shipping
    Available
    Shipping Not Available
    Not available in OH
1/2 in. Cast Copper Silicon Alloy FPT Reduced Pressure Zone Assembly with Quarter Turn Shutoff Valves and Flood Sensor
Watts Series LF009

1/2 in. Cast Copper Silicon Alloy FPT Reduced Pressure Zone Assembly with Quarter Turn Shutoff Valves and Flood Sensor
Part #WLF009QTFSD
Item #9880567
Mfr. Part #88004110
5 out of 5 Customer Rating
  • Requires Certification

  • Lead Law Compliant

 Points
EACH
Requires Certification
How to get it:
  • Pick Up
    1  Available
    0 nearby
    Pick Up  Not Available
    Not available in OH
  • Shipping
    Available
    Shipping Not Available
    Not available in OH
1/2 in. x 1/2 in. Brass Union x FPT Dual Check Valve
Watts Series LF7R

1/2 in. x 1/2 in. Brass Union x FPT Dual Check Valve
Part #WLF7RU22D
Item #4378311
Mfr. Part #0072203
3.4 out of 5 Customer Rating
  • Requires Certification

  • Lead Law Compliant

 Points
EACH
Requires Certification
How to get it:
  • Pick Up
    1  Available
    Available Nearby
    Pick Up  Not Available
    Not available in OH
  • Shipping
    Available
    Shipping Not Available
    Not available in OH
2-1/2 in. Cast Iron Flanged 175 psi Backflow Preventer
Watts Series LF909-FS

2-1/2 in. Cast Iron Flanged 175 psi Backflow Preventer
Part #WLF909NRSFSL
Item #9767403
Mfr. Part #88009307
3.3 out of 5 Customer Rating
  • Requires Certification

  • Lead Law Compliant

 Points
EACH
Requires Certification
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How to get it:
  • Pick Up
    0  Available
    0 nearby
    Pick Up  Not Available
    Not available in OH
  • Shipping
    Not Available
    Shipping Not Available
    Not available in OH
1/2 in. Forged Brass Union Dual Check Valve with Intermediate Atmospheric Vent
Watts Series LF9D

1/2 in. Forged Brass Union Dual Check Valve with Intermediate Atmospheric Vent
Part #WLF9DD
Item #8431764
Mfr. Part #88006822
4 out of 5 Customer Rating
  • Requires Certification

  • Lead Law Compliant

 Points
EACH
Requires Certification
How to get it:
  • Pick Up
    1  Available
    0 nearby
    Pick Up  Not Available
    Not available in OH
  • Shipping
    Available
    Shipping Not Available
    Not available in OH
2 in Cast Copper Silicon Alloy FPT Double Check Detector Assembly with Quarter-Turn Ball Valves and Strainer
Watts Series LF719

2 in Cast Copper Silicon Alloy FPT Double Check Detector Assembly with Quarter-Turn Ball Valves and Strainer
Part #WLF719QTSK
Item #4525840
Mfr. Part #0065312
4.5 out of 5 Customer Rating
  • Requires Certification

  • Lead Law Compliant

 Points
EACH
Requires Certification
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How to get it:
  • Pick Up
    0  Available
    0 nearby
    Pick Up  Not Available
    Not available in OH
  • Shipping
    Not Available
    Shipping Not Available
    Not available in OH
1/2 Copper Silicon Alloy FPT Double Check Valve Assembly with Freeze Sensor, Quarter-Turn Ball Valve and Strainer
Watts LF007 Series

1/2 Copper Silicon Alloy FPT Double Check Valve Assembly with Freeze Sensor, Quarter-Turn Ball Valve and Strainer
Part #WLF007QTSFZD
Item #10248745
Mfr. Part #T122601
4.6 out of 5 Customer Rating
  • Requires Certification

  • Lead Law Compliant

 Points
EACH
Requires Certification
How to get it:
  • Pick Up
    0  Available
    0 nearby
    Pick Up  Not Available
    Not available in OH
  • Shipping
    Available
    Shipping Not Available
    Not available in OH
2-1/2 in. Cast Iron Flanged Backflow Preventer
Watts Series LF909-FS

2-1/2 in. Cast Iron Flanged Backflow Preventer
Part #WLF909DNRSFS212L
Item #9776560
Mfr. Part #88009319
4.7 out of 5 Customer Rating
  • Requires Certification

Points
EACH
Requires Certification
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How to get it:
  • Pick Up
    0  Available
    0 nearby
    Pick Up  Not Available
    Not available in OH
  • Shipping
    Not Available
    Shipping Not Available
    Not available in OH
3/8 in Stainless Steel FPT Double Check Valve with Strainer
Watts Model SD-3

3/8 in Stainless Steel FPT Double Check Valve with Strainer
Part #WSD3FNLSC
Item #4083771
Mfr. Part #0061673
3.7 out of 5 Customer Rating
  • Requires Certification

  • Lead Law Compliant

 Points
EACH
Requires Certification
How to get it:
  • Pick Up
    0  Available
    0 nearby
    Pick Up  Not Available
    Not available in OH
  • Shipping
    Available
    Shipping Not Available
    Not available in OH
1/2 x 1/2 in. Bronze Union Sweat x Socket Weld Dual Check Valve with Atmospheric Vent
Watts Series 9D

1/2 x 1/2 in. Bronze Union Sweat x Socket Weld Dual Check Valve with Atmospheric Vent
Part #W9DSM3D
Item #543292
Mfr. Part #0061952
4.4 out of 5 Customer Rating
  • Requires Certification

  • Not Compliant, Approved for Non-Potable Water Applications

 Points
EACH
Requires Certification
How to get it:
  • Pick Up
    0  Available
    0 nearby
    Pick Up  Not Available
    Not available in OH
  • Shipping
    Available
    Shipping Not Available
    Not available in OH
3/8 in. Stainless Steel MPT Dual Check Valve with Atmospheric Vent and Strainer
Watts Model SD-3

3/8 in. Stainless Steel MPT Dual Check Valve with Atmospheric Vent and Strainer
Part #WSD3MFC
Item #1222720
Mfr. Part #0061657
4.3 out of 5 Customer Rating
  • Requires Certification

  • Lead Law Compliant

 Points
EACH
Requires Certification
How to get it:
  • Pick Up
    3  Available
    Available Nearby
    Pick Up  Not Available
    Not available in OH
  • Shipping
    Available
    Shipping Not Available
    Not available in OH
3/8 in. Stainless Steel FPT Dual Check Valve
Watts Model SD-2

3/8 in. Stainless Steel FPT Dual Check Valve
Part #WSD2FN
Item #2475553
Mfr. Part #0061663
4.8 out of 5 Customer Rating
  • Requires Certification

  • Lead Law Compliant

 Points
EACH
Requires Certification
How to get it:
  • Pick Up
    0  Available
    0 nearby
    Pick Up  Not Available
    Not available in OH
  • Shipping
    Available
    Shipping Not Available
    Not available in OH
3 in. Stainless Steel Flanged 175 psi Backflow Preventer
Watts Series 994

3 in. Stainless Steel Flanged 175 psi Backflow Preventer
Part #W994OSYFSM
Item #10001423
Mfr. Part #F437805
5 out of 5 Customer Rating
  • Requires Certification

Points
EACH
Requires Certification
Log in or Create an Account to see product availability.
How to get it:
  • Pick Up
    0  Available
    0 nearby
    Pick Up  Not Available
    Not available in OH
  • Shipping
    Not Available
    Shipping Not Available
    Not available in OH
3/4 in. Forged Brass Union Dual Check Valve with Intermediate Atmospheric Vent
Watts Series LF9D

3/4 in. Forged Brass Union Dual Check Valve with Intermediate Atmospheric Vent
Part #WLF9DF
Item #8431761
Mfr. Part #88006832
3.7 out of 5 Customer Rating
  • Requires Certification

  • Lead Law Compliant

 Points
EACH
Requires Certification
How to get it:
  • Pick Up
    0  Available
    0 nearby
    Pick Up  Not Available
    Not available in OH
  • Shipping
    Available
    Shipping Not Available
    Not available in OH
1/2 Cast Copper Silicon Alloy FPT Double Check Valve Assembly with Freeze Sensor and Quarter-Turn Ball Valve
Watts LF007 Series

1/2 Cast Copper Silicon Alloy FPT Double Check Valve Assembly with Freeze Sensor and Quarter-Turn Ball Valve
Part #WLF007QTFZD
Item #10248744
Mfr. Part #T063230
3.5 out of 5 Customer Rating
  • Requires Certification

  • Lead Law Compliant

 Points
EACH
Requires Certification
How to get it:
  • Pick Up
    0  Available
    0 nearby
    Pick Up  Not Available
    Not available in OH
  • Shipping
    Available
    Shipping Not Available
    Not available in OH
2-1/2 in. Stainless Steel Flanged 175 psi Backflow Preventer
Watts Series 957-FS

2-1/2 in. Stainless Steel Flanged 175 psi Backflow Preventer
Part #W957NRSFSL
Item #9997630
Mfr. Part #F111602
5 out of 5 Customer Rating
  • Requires Certification

Points
EACH
Requires Certification
Log in or Create an Account to see product availability.
How to get it:
  • Pick Up
    0  Available
    0 nearby
    Pick Up  Not Available
    Not available in OH
  • Shipping
    Available
    Shipping Not Available
    Not available in OH
3/8 in. Stainless Steel Flare 150 psi Backflow Preventer
Watts Model SD-3

3/8 in. Stainless Steel Flare 150 psi Backflow Preventer
Part #WSD3FFC
Item #2980068
Mfr. Part #0061665
4 out of 5 Customer Rating
  • Requires Certification

  • Lead Law Compliant

 Points
EACH
Requires Certification
Out of Stock
How to get it:
  • Pick Up
    0  Available
    0 nearby
    Pick Up  Not Available
    Not available in OH
  • Shipping
    Not Available
    Shipping Not Available
    Not available in OH
3/8 in. Cast Copper Silicon Alloy FPT Dual Check Valve
Watts Series LF7

3/8 in. Cast Copper Silicon Alloy FPT Dual Check Valve
Part #WLF7C
Item #3953637
Mfr. Part #0792076
3.3 out of 5 Customer Rating
  • Requires Certification

  • Lead Law Compliant

 Points
EACH
Requires Certification
How to get it:
  • Pick Up
    0  Available
    Available Nearby
    Pick Up  Not Available
    Not available in OH
  • Shipping
    Available
    Shipping Not Available
    Not available in OH