Backflow Prevention
Backflow prevention devices keep contaminated water from flowing back into potable water supplies. They're required by code wherever cross-connections exist, such as boiler feeds, irrigation, fire systems and process water.
Backflow Device Types
- Reduced pressure zone (RPZ) assemblies – high-hazard protection
- Double check valve assemblies – low-hazard protection
- Pressure vacuum breakers – irrigation
- Atmospheric vacuum breakers – simple point-of-use
- Repair kits and test kits – maintenance and annual testing
Choosing a Device
The hazard level and local code determine the device. Size for flow and pressure loss, and plan for annual testing access.
Centro supplies backflow prevention devices and repair kits.
Related categories: Process Equipment | Industrial Desiccant Dehumidifiers | Heat Exchanger Applications | Thermal Fluid Heater Systems | Pumps
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Engineered by Apollo, the 4ANLF70EC4 is an RP Detector Assembly. It is commonly found in plumbing, oil and gas, and marine applications. Apollo Valves is recognized globally for engineering products that meet strict performance standards. It is designed to comply with applicable NSF and FM requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF70EE4 is an RP Detector Assembly. Typical applications span commercial mechanical systems, fire protection, and industrial processing environments. Apollo Valves is recognized globally for engineering products that meet strict performance standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF70EG4 from Apollo is an RP Detector Assembly. This product serves professionals across plumbing, fire protection, and commercial mechanical systems sectors. Backed by Apollo's commitment to quality, the 4ANLF70EG4 is built to perform under real-world conditions. This product meets relevant NSF and ASME standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF70EC6 is an RP Detector Assembly. Typical applications span plumbing, industrial processing, and oil and gas environments. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. This product meets relevant ASME and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF70EE6 is an RP Detector Assembly. This product serves professionals across commercial mechanical systems, HVAC, and plumbing sectors. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. This product meets relevant ASME and UL standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF70EG6 from Apollo is an RP Detector Assembly. Typical applications span commercial mechanical systems, marine, and plumbing environments. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. This product meets relevant NSF and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF70EC10 from Apollo is an RP Detector Assembly. It is commonly found in industrial processing, plumbing, and marine applications. Backed by Apollo's commitment to quality, the 4ANLF70EC10 is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF70EE10 is an RP Detector Assembly. This product serves professionals across fire protection, industrial processing, and HVAC sectors. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. It is designed to comply with applicable UL and FM requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF70EG10 is an RP Detector Assembly. This product serves professionals across commercial mechanical systems, marine, and HVAC sectors. Backed by Apollo's commitment to quality, the 4ANLF70EG10 is built to perform under real-world conditions. This product meets relevant UL and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF72GE9 is an RP Detector Assembly 2nd Check. It is commonly found in commercial mechanical systems, industrial processing, and oil and gas applications. Apollo Valves is recognized globally for engineering products that meet strict performance standards. This product meets relevant NSF and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF72GC3 from Apollo is an RP Detector Assembly 2nd Check. This product serves professionals across fire protection, industrial processing, and commercial mechanical systems sectors. The 4ANLF72GC3 reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF72GE3 from Apollo is an RP Detector Assembly 2nd Check. Typical applications span industrial processing, plumbing, and marine environments. The 4ANLF72GE3 reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF72GG3 is an RP Detector Assembly 2nd Check. This product serves professionals across HVAC, oil and gas, and marine sectors. Apollo Valves is recognized globally for engineering products that meet strict performance standards. This product meets relevant ASME and NSF standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF72HC3 is an RP Detector Assembly 2nd Check. Typical applications span plumbing, oil and gas, and marine environments. Apollo Valves is recognized globally for engineering products that meet strict performance standards. This product meets relevant ASME and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF72HE3 from Apollo is an RP Detector Assembly 2nd Check. It is commonly found in commercial mechanical systems, fire protection, and industrial processing applications. Apollo Valves is recognized globally for engineering products that meet strict performance standards. This product meets relevant FM and ASME standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF729C9 from Apollo is an RP Detector Assembly 2nd Check. This product serves professionals across oil and gas, commercial mechanical systems, and industrial processing sectors. Apollo products are trusted by engineers and specifiers worldwide.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF729E9 is an RP Detector Assembly 2nd Check. Typical applications span HVAC, oil and gas, and marine environments. Apollo products are trusted by engineers and specifiers worldwide. It is designed to comply with applicable NSF and FM requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF729G9 from Apollo is an RP Detector Assembly 2nd Check. This product serves professionals across industrial processing, plumbing, and marine sectors. Apollo products are trusted by engineers and specifiers worldwide.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF729C3 is an RP Detector Assembly 2nd Check. Typical applications span HVAC, oil and gas, and industrial processing environments. Apollo Valves is recognized globally for engineering products that meet strict performance standards. This product meets relevant ASME and UL standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF729E3 from Apollo is an RP Detector Assembly 2nd Check. This product serves professionals across HVAC, plumbing, and industrial processing sectors. The 4ANLF729E3 reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF729G3 is an RP Detector Assembly 2nd Check. It is commonly found in HVAC, industrial processing, and commercial mechanical systems applications. The 4ANLF729G3 reflects Apollo's long-standing reputation for quality and innovation. It is designed to comply with applicable ASME and NSF requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF729E7 is an RP Detector Assembly 2nd Check. This product serves professionals across fire protection, marine, and HVAC sectors. Apollo Valves is recognized globally for engineering products that meet strict performance standards. It is designed to comply with applicable UL and FM requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF729C7 from Apollo is an RP Detector Assembly 2nd Check. Typical applications span fire protection, industrial processing, and marine environments. Backed by Apollo's commitment to quality, the 4ANLF729C7 is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF729G7 is an RP Detector Assembly 2nd Check. This product serves professionals across industrial processing, marine, and commercial mechanical systems sectors. Apollo Valves is recognized globally for engineering products that meet strict performance standards. It is designed to comply with applicable UL and FM requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF70EC4 is an RP Detector Assembly. It is commonly found in plumbing, oil and gas, and marine applications. Apollo Valves is recognized globally for engineering products that meet strict performance standards. It is designed to comply with applicable NSF and FM requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF70EE4 is an RP Detector Assembly. Typical applications span commercial mechanical systems, fire protection, and industrial processing environments. Apollo Valves is recognized globally for engineering products that meet strict performance standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF70EG4 from Apollo is an RP Detector Assembly. This product serves professionals across plumbing, fire protection, and commercial mechanical systems sectors. Backed by Apollo's commitment to quality, the 4ANLF70EG4 is built to perform under real-world conditions. This product meets relevant NSF and ASME standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF70EC6 is an RP Detector Assembly. Typical applications span plumbing, industrial processing, and oil and gas environments. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. This product meets relevant ASME and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF70EE6 is an RP Detector Assembly. This product serves professionals across commercial mechanical systems, HVAC, and plumbing sectors. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. This product meets relevant ASME and UL standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF70EG6 from Apollo is an RP Detector Assembly. Typical applications span commercial mechanical systems, marine, and plumbing environments. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. This product meets relevant NSF and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF70EC10 from Apollo is an RP Detector Assembly. It is commonly found in industrial processing, plumbing, and marine applications. Backed by Apollo's commitment to quality, the 4ANLF70EC10 is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF70EE10 is an RP Detector Assembly. This product serves professionals across fire protection, industrial processing, and HVAC sectors. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. It is designed to comply with applicable UL and FM requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF70EG10 is an RP Detector Assembly. This product serves professionals across commercial mechanical systems, marine, and HVAC sectors. Backed by Apollo's commitment to quality, the 4ANLF70EG10 is built to perform under real-world conditions. This product meets relevant UL and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF72GE9 is an RP Detector Assembly 2nd Check. It is commonly found in commercial mechanical systems, industrial processing, and oil and gas applications. Apollo Valves is recognized globally for engineering products that meet strict performance standards. This product meets relevant NSF and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF72GC3 from Apollo is an RP Detector Assembly 2nd Check. This product serves professionals across fire protection, industrial processing, and commercial mechanical systems sectors. The 4ANLF72GC3 reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF72GE3 from Apollo is an RP Detector Assembly 2nd Check. Typical applications span industrial processing, plumbing, and marine environments. The 4ANLF72GE3 reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF72GG3 is an RP Detector Assembly 2nd Check. This product serves professionals across HVAC, oil and gas, and marine sectors. Apollo Valves is recognized globally for engineering products that meet strict performance standards. This product meets relevant ASME and NSF standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF72HC3 is an RP Detector Assembly 2nd Check. Typical applications span plumbing, oil and gas, and marine environments. Apollo Valves is recognized globally for engineering products that meet strict performance standards. This product meets relevant ASME and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF72HE3 from Apollo is an RP Detector Assembly 2nd Check. It is commonly found in commercial mechanical systems, fire protection, and industrial processing applications. Apollo Valves is recognized globally for engineering products that meet strict performance standards. This product meets relevant FM and ASME standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF729C9 from Apollo is an RP Detector Assembly 2nd Check. This product serves professionals across oil and gas, commercial mechanical systems, and industrial processing sectors. Apollo products are trusted by engineers and specifiers worldwide.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF729E9 is an RP Detector Assembly 2nd Check. Typical applications span HVAC, oil and gas, and marine environments. Apollo products are trusted by engineers and specifiers worldwide. It is designed to comply with applicable NSF and FM requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF729G9 from Apollo is an RP Detector Assembly 2nd Check. This product serves professionals across industrial processing, plumbing, and marine sectors. Apollo products are trusted by engineers and specifiers worldwide.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF729C3 is an RP Detector Assembly 2nd Check. Typical applications span HVAC, oil and gas, and industrial processing environments. Apollo Valves is recognized globally for engineering products that meet strict performance standards. This product meets relevant ASME and UL standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF729E3 from Apollo is an RP Detector Assembly 2nd Check. This product serves professionals across HVAC, plumbing, and industrial processing sectors. The 4ANLF729E3 reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF729G3 is an RP Detector Assembly 2nd Check. It is commonly found in HVAC, industrial processing, and commercial mechanical systems applications. The 4ANLF729G3 reflects Apollo's long-standing reputation for quality and innovation. It is designed to comply with applicable ASME and NSF requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF729E7 is an RP Detector Assembly 2nd Check. This product serves professionals across fire protection, marine, and HVAC sectors. Apollo Valves is recognized globally for engineering products that meet strict performance standards. It is designed to comply with applicable UL and FM requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF729C7 from Apollo is an RP Detector Assembly 2nd Check. Typical applications span fire protection, industrial processing, and marine environments. Backed by Apollo's commitment to quality, the 4ANLF729C7 is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF729G7 is an RP Detector Assembly 2nd Check. This product serves professionals across industrial processing, marine, and commercial mechanical systems sectors. Apollo Valves is recognized globally for engineering products that meet strict performance standards. It is designed to comply with applicable UL and FM requirements.
Requires Quote
Available for Purchase
Subject to factory lead times