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Backflow Repair Parts
- Ames
  
  1/4"
  3/8"
  1/2"
  3/4"
  1"
  1 1/4"
  1 1/2"
  2"
  2 1/2"
  3"
  4"
  6"
  8"
  10"
  12"
- Conbraco/Apollo
  
  1/4"
  3/8"
  1/2"
  3/4"
  1"
  1 1/4"
  1 1/2"
  2"
  2 1/2"
  3"
  4"
  6"
  8"
  10"
  12"
- Deringer
  
  2"
  2 1/2"
  3"
  4"
  6"
  8"
- Febco
  
  1/2"
  3/4"
  1"
  1 1/4"
  1 1/2"
  2"
  2 1/2"
  3"
  4"
  6"
  8"
  10"
- Hersey
  
  3/4"
  1"
  1 1/4"
  1 1/2"
  2"
  2 1/2"
  3"
  4"
  6"
  8"
  10"
- Watts
  
  1/4"
  1/2"
  3/4"
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  1 1/4"
  1 1/2"
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  2 1/2"
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  6"
  8"
  10"
  12"
- Wilkins
  
  1/2"
  3/4"
  1"
  1 1/4"
  1 1/2"
  2"
  2 1/2"
  3"
  4"
  6"
  8"
  10"
  12"
- Shop All Backflow Repair Parts
Backflow Devices
Installation Accessories
- Air Gaps
- Bypass Meters
- Valve Setters
  
  Ames
  Febco
  Watts
  Wilkins
- Enclosures
  
  Aluminum Enclosures
  Heat Wires
  Roof Heat Wires
  Insulated Pillows
  WattsBox
- Fire Thread Adaptors
- Strainers
  
  Ames
  Febco
  Watts
  Wilkins
- Flange Packs
- Test Cocks
- Tools & Accessories
- IOT Kits
- LF NPT Pipe Fittings
  
  Fittings
  Nipples
  Hose Bibbs
- Valve Stands
- Shop All Installation Accessories
- Pressure Reducing Valves
- Pressure Relief Valve
- Tamper Switch
Test Kits & Calibrations
- A'la Carte Calibrations
- Calibration Packages
  
  Silver
  Platinum
  Gold
- Backflow Test Kits & Accessories
  
  Arbiter
  Mid-West
  Watts
- Adapters
- Hoses
- Test Cocks
- Cases
- Flow Switches
- Shop All Test Kits & Calibrations
Shutoff Valves
- Ball Valves
  
  Ames
  Febco
  Watts
  Wilkins
  Matco Norca
- Butterfly Valves
  
  1"
  1 1/4"
  1 1/2"
  2"
  2 1/2"
  3"
  4"
  6"
  8"
  10"
- Gate Valves
  
  2 1/2"
  3"
  4"
  6"
  8"
  10"
  12"
- Gear Operated Ball Valves
- KV Repair Parts
  
  Cover O-Rings
  NRS Models
  OSY Models
  Packing Parts
  Packing Tools
- Pressure Reducing Valves
  
  Watts
  Wilkins
- Soft Seated Checks
  
  1/2"
  3/4"
  1"
  1 1/4"
  1 1/2"
  2"
- Test Cocks
- Shop All Shutoff Valves
Fire Products
PPE, First Aid & Tools
- Consumables
  
  Absorbent Materials
  Batteries
  Brushes
  Flashlights
  Lubricants, Cleaners & Chemicals
  Paper Products
  Pens, Paint & Markers
  Pest & Insect Control
  Sanitizer/Hand Cleader
  Wipes
  Zip Ties
- First Aid
  
  AED
  Bandages
  Eyewash
  Kits
  Other
- Personal Protective Equipment
  
  Coveralls
  Glasses
  Gloves
  Hard Hats & Accessories
  Hearing Protection
  Hi-Viz
  Other
  Sqwincher
  Sun & Heat Protection
  Hydration Solutions
- Tools & Storage
  
  Bins, Bags & Cases
  Cutting Tools
  Drills & Bits
  Extension Cords
  Hammers
  Jacks
  Locks
  Other
  Pipe Wrenches
  Pliers
  Screwdrivers
  Sockets
  Tape Measures
  Wrenches
  Tool Chests
  Extractors
  Pry Bars
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- Traffic Products
  
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  Other
  Traffic Cones
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- Shop All PPE, First Aid & Tools

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Backflow Devices
Watts
DCDA - Double Check Detector Assemblies

Collection: Backflow Devices - Watts - DCDA - Double Check Detector Assemblies

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209 products

Watts 3" 774DCDA Double Check Detector Assembly Backflow Preventer, OSY Shutoffs, No Meter, Short Lay Length

Watts 3" 774DCDA Double Check Detector Assembly Backflow Preventer, OSY Shutoffs, No Meter, Short Lay Length

Regular price $10,977.00

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Item #: DDP0438138
Availability: Special Order
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Watts 2 1/2" 757DCDA Double Check Detector Assembly Backflow Preventer, OSY Shutoff Valves, Without Meter

Watts 2 1/2" 757DCDA Double Check Detector Assembly Backflow Preventer, OSY Shutoff Valves, Without Meter

Regular price $8,049.75

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Item #: DDP0111837
Availability: Special Order
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Watts 4" 757DCDA Double Check Detector Assembly Backflow Preventer, UL/FM Butterfly Valve Shutoffs, Cubic Feet Meter, N Pattern

Watts 4" 757DCDA Double Check Detector Assembly Backflow Preventer, UL/FM Butterfly Valve Shutoffs, Cubic Feet Meter, N Pattern

Regular price $13,727.25

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Item #: DDP0111578
Availability: Special Order
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Watts 4" 757DCDA Double Check Detector Assembly Backflow Preventer, UL/FM Butterfly Valve Shutoffs, Gallons/Minute Meter, N Pattern

Watts 4" 757DCDA Double Check Detector Assembly Backflow Preventer, UL/FM Butterfly Valve Shutoffs, Gallons/Minute Meter, N Pattern

Regular price $13,727.25

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Item #: DDP0111582
Availability: Special Order
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Watts 2 1/2" 757DCDA Double Check Detector Assembly Backflow Preventer, OSY Shutoff Valves, Gallons/Minute Meter

Watts 2 1/2" 757DCDA Double Check Detector Assembly Backflow Preventer, OSY Shutoff Valves, Gallons/Minute Meter

Regular price $8,215.50

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Item #: DDP0111550
Availability: Special Order
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Watts 2 1/2" 757DCDA Double Check Detector Assembly Backflow Preventer, UL/FM Butterfly Valve Shutoffs, Cubic Feet Meter

Watts 2 1/2" 757DCDA Double Check Detector Assembly Backflow Preventer, UL/FM Butterfly Valve Shutoffs, Cubic Feet Meter

Regular price $8,733.00

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Item #: DDP0111568
Availability: Special Order
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Watts 3" 757DCDA Double Check Detector Assembly Backflow Preventer, UL/FM Butterfly Valve Shutoffs, Without Meter, N Pattern

Watts 3" 757DCDA Double Check Detector Assembly Backflow Preventer, UL/FM Butterfly Valve Shutoffs, Without Meter, N Pattern

Regular price $11,643.00

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Item #: DDP0111855
Availability: Special Order
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Watts 3" 757DCDA Double Check Detector Assembly Backflow Preventer, OSY Shutoff Valve x Post Indicator Valve, Cubic Feet Meter

Watts 3" 757DCDA Double Check Detector Assembly Backflow Preventer, OSY Shutoff Valve x Post Indicator Valve, Cubic Feet Meter

Regular price $9,186.75

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Item #: DDP0111206
Availability: Special Order
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Watts 4" 757DCDA Double Check Detector Assembly Backflow Preventer, Post Indicator Valve x OSY Shutoff Valve, Gallons/Minute Meter

Watts 4" 757DCDA Double Check Detector Assembly Backflow Preventer, Post Indicator Valve x OSY Shutoff Valve, Gallons/Minute Meter

Regular price $9,300.75

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Item #: DDP0191613
Availability: Special Order
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Watts 4" 774DCDA Double Check Detector Assembly Backflow Preventer, Domestic OSY Shutoff, Cubic Feet Meter, Short Lay Length

Watts 4" 774DCDA Double Check Detector Assembly Backflow Preventer, Domestic OSY Shutoff, Cubic Feet Meter, Short Lay Length

Regular price $11,907.00

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Item #: DDP0439329
Availability: Special Order
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Watts 2 1/2" 774DCDA Double Check Detector Assembly Backflow Preventer, OSY Shutoff, Gallons/Minute Meter, Short Lay Length

Watts 2 1/2" 774DCDA Double Check Detector Assembly Backflow Preventer, OSY Shutoff, Gallons/Minute Meter, Short Lay Length

Regular price $9,152.25

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Item #: DDP0437705
Availability: Special Order
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Watts 3" 757DCDA Double Check Detector Assembly Backflow Preventer, OSY Shutoff Valves, Without Meter, N Pattern

Watts 3" 757DCDA Double Check Detector Assembly Backflow Preventer, OSY Shutoff Valves, Without Meter, N Pattern

Regular price $11,101.50

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Item #: DDP0111844
Availability: Special Order
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Watts 3" 757DCDA Double Check Detector Assembly Backflow Preventer, Domestic OSY Shutoff Valves, Gallons/Minute Meter

Watts 3" 757DCDA Double Check Detector Assembly Backflow Preventer, Domestic OSY Shutoff Valves, Gallons/Minute Meter

Regular price $9,887.25

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Item #: DDP0113015
Availability: Special Order
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Watts 3" 757DCDA Double Check Detector Assembly Backflow Preventer, UL/FM Butterfly Valve Shutoffs, Cubic Feet Meter, N Pattern

Watts 3" 757DCDA Double Check Detector Assembly Backflow Preventer, UL/FM Butterfly Valve Shutoffs, Cubic Feet Meter, N Pattern

Regular price $11,811.75

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Item #: DDP0111577
Availability: Special Order
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Watts 4" 757DCDA Double Check Detector Assembly Backflow Preventer, Domestic OSY Shutoff Valves, Cubic Feet Meter

Watts 4" 757DCDA Double Check Detector Assembly Backflow Preventer, Domestic OSY Shutoff Valves, Cubic Feet Meter

Regular price $10,505.25

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Item #: DDP0113012
Availability: Special Order
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Watts 4" 757DCDA Double Check Detector Assembly Backflow Preventer, OSY Shutoff Valves, Flanged Inlet x Groove Outlet, Cubic Feet Meter

Watts 4" 757DCDA Double Check Detector Assembly Backflow Preventer, OSY Shutoff Valves, Flanged Inlet x Groove Outlet, Cubic Feet Meter

Regular price $9,300.75

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Item #: DDP0191597
Availability: Special Order
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Watts 4" 757DCDA Double Check Detector Assembly Backflow Preventer, OSY Shutoff Valve x Post Indicator Valve, Gallons/Minute Meter

Watts 4" 757DCDA Double Check Detector Assembly Backflow Preventer, OSY Shutoff Valve x Post Indicator Valve, Gallons/Minute Meter

Regular price $9,762.00

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Item #: DDP0111212
Availability: Special Order
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Watts 6" 757DCDA Double Check Detector Assembly Backflow Preventer, OSY Shutoff Valves, Gallons/Minute Meter, N Pattern

Watts 6" 757DCDA Double Check Detector Assembly Backflow Preventer, OSY Shutoff Valves, Gallons/Minute Meter, N Pattern

Regular price $18,313.50

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Item #: DDP0111565
Availability: Special Order
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Watts 4" 774DCDA Double Check Detector Assembly Backflow Preventer, No Shutoff, No Meter, Short Lay Length

Watts 4" 774DCDA Double Check Detector Assembly Backflow Preventer, No Shutoff, No Meter, Short Lay Length

Regular price $8,887.50

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Item #: DDP0438132
Availability: Special Order
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Watts 6" 757DCDA Double Check Detector Assembly, UL/FM Butterfly Valve Shutoffs, Cubic Feet Meter

Watts 6" 757DCDA Double Check Detector Assembly, UL/FM Butterfly Valve Shutoffs, Cubic Feet Meter

Regular price $12,602.25

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Item #: DDP0111571
Availability: Special Order
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Watts 6" 757DCDA Double Check Detector Assembly Backflow Preventer, UL/FM Butterfly Valve Shutoffs, Cubic Feet Meter, N Pattern

Watts 6" 757DCDA Double Check Detector Assembly Backflow Preventer, UL/FM Butterfly Valve Shutoffs, Cubic Feet Meter, N Pattern

Regular price $18,872.25

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Item #: DDP0111579
Availability: Special Order
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Watts 6" 757DCDA Double Check Detector Assembly Backflow Preventer, OSY Shutoff Valves, Gallons/Minute Meter

Watts 6" 757DCDA Double Check Detector Assembly Backflow Preventer, OSY Shutoff Valves, Gallons/Minute Meter

Regular price $12,071.25

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Item #: DDP0111553
Availability: Special Order
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Watts 12" 774DCDA Double Check Detector Assembly Backflow Preventer, OSY Shutoff, Gallons/Minute Meter, Short Lay Length

Watts 12" 774DCDA Double Check Detector Assembly Backflow Preventer, OSY Shutoff, Gallons/Minute Meter, Short Lay Length

Regular price $48,099.75

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Item #: DDP0438085
Availability: Special Order
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Watts 4" 757DCDA Double Check Detector Assembly Backflow Preventer, OSY Shutoff Valves, Without Meter

Watts 4" 757DCDA Double Check Detector Assembly Backflow Preventer, OSY Shutoff Valves, Without Meter

Regular price $9,140.25

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Item #: DDP0111839
Availability: Special Order
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