Irrigation Devices

 
  A backflow prevention device is used to protect water supplies from contamination or pollution. Designed for installation on potable water lines to protect against both back siphonage and back pressure of contaminated water into the potable water supply. Backflow Assemblies provide protection where a potential health hazard exists.

Take a look at the top ten reviews for "BACKFLOW" devices. If you need any additional information, instillation or repairs just "CLICK ON" the "READ REVIEWS" or "BUY NOW!" button bellow and visit a certified irrigation contractor, manufatuerer or store near you.
 
     
     
 
       
  Pressure Vaccum Breaker Assembly Double Check Assembly Reduced Pressure Zone Assembly  
  Pressure Vacuum Breaker (PVB)assemblies shall be in stalled to withstand pressure for long periods and to prevent backflow of contaminated water into the potable water system in backsiphonage conditions. The Pressure Vacuum Breaker assembly shall consist of a single spring loaded check valve which closes tightly when water flow through the assembly drops to zero, and a single air relief valve that opens to break the siphon when pressure drops to 1psi.

The assembly shall include two resilient seated shut-offs and two resilient seated test cocks, considered integral to the assembly. Assemblies must be factory backflow tested. The check valve and air inlet valve must be constructed to allow in-line servicing of the assembly.
A double check valve or double check assembly (DCA) is a backflow prevention device designed to protect water supplies from contamination. It consists of two check valves assembled in series usually with a ball valve or gate valve installed at each end for isolation and testing. Often, test cocks (very small ball valves) are in place to attach test equipment for evaluating whether the double check assembly is still functional.

The double check valve assembly is suitable for prevention of back pressure and back siphonage, but is not suitable for high hazard applications. It is commonly used on lawn irrigation, fire sprinkler and combi-boiler systems.
A Reduced Pressure Zone Device (RPZD, RPZ or RPZ valve) is a type of backflow prevention device used to protect water supplies from contamination. RPZD may also be known as reduced pressure principle backflow prevention devices, reduced pressure zone assemblies.

Reduced Pressure Zone Assemblies are used to protect against high hazard (toxic) fluids in water services to industrial plants, hospitals, morgues, mortuaries, and chemical plants. They are also used in irrigation systems, boiler feed, water lines and other installations requiring maximum protection.
 
   
   
 
How to Install How to Choose
 
How to Install How to Choose
 
How to Install How to Choose
 
 
  Backflow Rating Scale  
  Manufacturer Febco Febco Febco Conbraco Conbraco  
  Model Number 765-100 850-100 860-100 CDC4V-505-02 CDC40-105-T2  
  Price Range $70 - $90 $90 - $125 $200 - $225      
               
  Assembly PVB DCA RPZ PVB DCA  
  Pressure Vaccum Breaker            
  Double Check            
  Reduced Preasure            
               
  Features & Benefits            
  Prevents Backsiphonage     Maximum Protection      
  Prevents Toxic Backflow            
  Prevents Objectional
Non-Toxic Polutants
           
  Reduces Backflow Pressure            
  Freeze Resistance Minimal Protection Minimal Protection Minimal Protection Minimal Protection Minimal Protection  
               
  Specifications            
  Max Working Preassure 150 PSI 175 PSI 175 PSI 175 PSI 175 PSI  
  Hydrostatic Test Pressure   350 PSI 350 PSI 350 PSI 350 PSI  
  Temperature Range 32F to 140F 32F to 140F 32F to 140F 33 to 180F 33 to 180F  
  End Connection NPT ANSI/ASME - ANSI B2.1 ANSI B2.1      
    B1.20.1          
               
  Customer Feedback            
  Number of Reviews 6 2 1 1 0  
  5 Stars / 2 Reviews 5 Stars / 2 Reviews 5 Stars / 1 Reviews 5 Stars / 1 Reviews 5 Stars / 0 Reviews  
  4 Stars / 3 Reviews 4 Stars / 0 Reviews 4 Stars / 0 Reviews 4 Stars / 0 Reviews 4 Stars / 0 Reviews  
  3 Stars / 1 Reviews 3 Stars / 0 Reviews 3 Stars / 0 Reviews 3 Stars / 0 Reviews 3 Stars / 0 Reviews  
  2 Stars / 0 Reviews 2 Stars / 0 Reviews 2 Stars / 0 Reviews 2 Stars / 0 Reviews 2 Stars / 0 Reviews  
  1 Star / 0 Reviews 1 Star / 0 Reviews 1 Star / 0 Reviews 1 Star / 0 Reviews 1 Star / 0 Reviews  
               
  Star Review Totals 25 10 5 5 0  
  Max Review Stars 30 10 5 5 0  
               
  Star Review Summary 30 out of 30 Stars 30 out of 30 Stars 5 out of 5 Stars 5 out of 5 Stars 5 out of 5 Stars  
  Review Summary 83% 100% 100% 100% 0%  
 
  Products Available at: Sprinkler Warehouse Sprinkler Warehouse Sprinkler Warehouse Sprinkler Warehouse Sprinkler Warehouse  
               
               
               
               
               
 
  Backflow Rating Scale  
  Manufacturer Conbraco Watts Wilkins Wilkins Wilkins  
  Model Number CDC40-205-T2 800M-4QT-100 720A-100 950XLT-100 975XL-100  
  Prince Range $200 - $250 $100 - $120 $60 - $80 $95 - $115 $175 - $200  
               
  Assembly RPZ PVB PVB DCA RPZ  
  Pressure Vaccum Breaker            
  Double Check            
  Reduced Pressure            
               
  Features & Benefits            
  Prevents Backsiphonage Maximum Protection       Maximum Protection  
  Prevents Toxic Backflow            
  Prevents Objectional
Non-Toxic Polutants
           
  Reduces Backflow Pressure            
  Free Resistance Minimal Protection Minimal Protection Minimal Protection Minimal Protection Minimal Protection  
               
  Specifications            
  Max Working Pressure 175 PSI 150 PSI 150 PSI 175 PSI 175 PSI  
  Hydostatic Test Pressure 350 PSI   300PSI 350 PSI 350 PSI  
  Temperature Range 33F to 188F 33F to 140F 33F to 140F Max 180F 33F to 188F  
  End Connection       ANSI B1.20.1    
               
               
  Customer Feedback            
  Number of Reviews 1 0 4 2 0  
  5 Stars / 1 Reviews 5 Stars / 0 Reviews 5 Stars / 4 Reviews 5 Stars / 2 Reviews 5 Stars / 0 Reviews  
  4 Stars / 0 Reviews 4 Stars / 0 Reviews 4 Stars / 0 Reviews 4 Stars / 0 Reviews 4 Stars / 0 Reviews  
  3 Stars / 0 Reviews 3 Stars / 0 Reviews 3 Stars / 0 Reviews 3 Stars / 0 Reviews 3 Stars / 0 Reviews  
  2 Stars / 0 Reviews 2 Stars / 0 Reviews 2 Stars / 0 Reviews 2 Stars / 0 Reviews 2 Stars / 0 Reviews  
  1 Star / 0 Reviews 1 Star / 0 Reviews 1 Star / 0 Reviews 1 Star / 0 Reviews 1 Star / 0 Reviews  
               
  Star Review Totals 5 0 20 10 0  
  Max Review Stars 5 0 20 10 0  
               
  Star Review Summary 5 out of 5 Stars 0 out of 0 Stars 20 out of 20 Stars 10 out of 10 Stars 0 out of 0 Stars  
  Review Summary 100% 0% 100% 100% 0%  
 
  Products Available at: Sprinkler Warehouse Sprinkler Warehouse Sprinkler Warehouse Sprinkler Warehouse Sprinkler Warehouse