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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Part number 4ANLF72AE6 from Apollo is an RP Detector Assembly 2nd Check. It is commonly found in plumbing, fire protection, and industrial processing applications. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. It is designed to comply with applicable ASME and UL requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF72AG6 is an RP Detector Assembly 2nd Check. It is commonly found in commercial mechanical systems, fire protection, and marine applications. As a leader in valves and flow control, Apollo manufactures every component to exacting standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF72AE10 is an RP Detector Assembly 2nd Check. Typical applications span HVAC, commercial mechanical systems, and marine environments. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. It is designed to comply with applicable NSF and ASME requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF72AC10 is an RP Detector Assembly 2nd Check. It is commonly found in marine, plumbing, and HVAC applications. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. This product meets relevant NSF and UL standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF72AG10 from Apollo is an RP Detector Assembly 2nd Check. It is commonly found in oil and gas, fire protection, and industrial processing applications. The 4ANLF72AG10 reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF72CC9 is an RP Detector Assembly 2nd Check. It is commonly found in industrial processing, plumbing, and HVAC applications. Backed by Apollo's commitment to quality, the 4ANLF72CC9 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 4ANLF72CE9 is an RP Detector Assembly 2nd Check. It is commonly found in HVAC, industrial processing, and marine applications. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. It is designed to comply with applicable NSF and FM requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF72CG9 is an RP Detector Assembly 2nd Check. Typical applications span HVAC, commercial mechanical systems, and industrial processing environments. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. It is designed to comply with applicable UL and NSF requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF72CC3 is an RP Detector Assembly 2nd Check. Typical applications span industrial processing, marine, and HVAC environments. The 4ANLF72CC3 reflects Apollo's long-standing reputation for quality and innovation. This product meets relevant UL and NSF standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF72CE3 is an RP Detector Assembly 2nd Check. This product serves professionals across commercial mechanical systems, marine, and HVAC sectors. The 4ANLF72CE3 reflects Apollo's long-standing reputation for quality and innovation. This product meets relevant FM and ASME standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF72CG3 from Apollo is an RP Detector Assembly 2nd Check. Typical applications span fire protection, industrial processing, and marine environments. Apollo products are trusted by engineers and specifiers worldwide.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF72CC7 is an RP Detector Assembly 2nd Check. Typical applications span HVAC, industrial processing, and oil and gas 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 4ANLF72CE7 from Apollo is an RP Detector Assembly 2nd Check. It is commonly found in HVAC, plumbing, and commercial mechanical systems applications. Apollo Valves is recognized globally for engineering products that meet strict performance standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF72CG7 is an RP Detector Assembly 2nd Check. It is commonly found in HVAC, oil and gas, and industrial processing applications. The 4ANLF72CG7 reflects Apollo's long-standing reputation for quality and innovation. This product meets relevant ASME and UL standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF72CC8 is an RP Detector Assembly 2nd Check. This product serves professionals across oil and gas, HVAC, and commercial mechanical systems sectors. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. It is designed to comply with applicable ASME and UL requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF72CE8 from Apollo is an RP Detector Assembly 2nd Check. Typical applications span fire protection, commercial mechanical systems, and plumbing environments. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. It is designed to comply with applicable NSF and FM requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF72CG8 is an RP Detector Assembly 2nd Check. This product serves professionals across commercial mechanical systems, fire protection, and marine sectors. Backed by Apollo's commitment to quality, the 4ANLF72CG8 is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF72CE4 is an RP Detector Assembly 2nd Check. Typical applications span fire protection, oil and gas, and commercial mechanical systems environments. Backed by Apollo's commitment to quality, the 4ANLF72CE4 is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF72CC4 is an RP Detector Assembly 2nd Check. It is commonly found in fire protection, HVAC, and oil and gas applications. Backed by Apollo's commitment to quality, the 4ANLF72CC4 is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF72CG4 from Apollo is an RP Detector Assembly 2nd Check. This product serves professionals across plumbing, oil and gas, and commercial mechanical systems sectors. Apollo Valves is recognized globally for engineering products that meet strict performance standards. This product meets relevant UL and NSF standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF72CC6 is an RP Detector Assembly 2nd Check. Typical applications span oil and gas, 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 4ANLF72CE6 from Apollo is an RP Detector Assembly 2nd Check. This product serves professionals across plumbing, fire protection, and marine sectors. Backed by Apollo's commitment to quality, the 4ANLF72CE6 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
The Apollo 4ANLF72CG6 is an RP Detector Assembly 2nd Check. Typical applications span fire protection, marine, and oil and gas environments. As a leader in valves and flow control, Apollo manufactures every component to exacting standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF72CC10 is an RP Detector Assembly 2nd Check. Typical applications span HVAC, oil and gas, and industrial processing environments. The 4ANLF72CC10 reflects Apollo's long-standing reputation for quality and innovation. It is designed to comply with applicable ASME and UL requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF72AE6 from Apollo is an RP Detector Assembly 2nd Check. It is commonly found in plumbing, fire protection, and industrial processing applications. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. It is designed to comply with applicable ASME and UL requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF72AG6 is an RP Detector Assembly 2nd Check. It is commonly found in commercial mechanical systems, fire protection, and marine applications. As a leader in valves and flow control, Apollo manufactures every component to exacting standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF72AE10 is an RP Detector Assembly 2nd Check. Typical applications span HVAC, commercial mechanical systems, and marine environments. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. It is designed to comply with applicable NSF and ASME requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF72AC10 is an RP Detector Assembly 2nd Check. It is commonly found in marine, plumbing, and HVAC applications. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. This product meets relevant NSF and UL standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF72AG10 from Apollo is an RP Detector Assembly 2nd Check. It is commonly found in oil and gas, fire protection, and industrial processing applications. The 4ANLF72AG10 reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF72CC9 is an RP Detector Assembly 2nd Check. It is commonly found in industrial processing, plumbing, and HVAC applications. Backed by Apollo's commitment to quality, the 4ANLF72CC9 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 4ANLF72CE9 is an RP Detector Assembly 2nd Check. It is commonly found in HVAC, industrial processing, and marine applications. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. It is designed to comply with applicable NSF and FM requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF72CG9 is an RP Detector Assembly 2nd Check. Typical applications span HVAC, commercial mechanical systems, and industrial processing environments. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. It is designed to comply with applicable UL and NSF requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF72CC3 is an RP Detector Assembly 2nd Check. Typical applications span industrial processing, marine, and HVAC environments. The 4ANLF72CC3 reflects Apollo's long-standing reputation for quality and innovation. This product meets relevant UL and NSF standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF72CE3 is an RP Detector Assembly 2nd Check. This product serves professionals across commercial mechanical systems, marine, and HVAC sectors. The 4ANLF72CE3 reflects Apollo's long-standing reputation for quality and innovation. This product meets relevant FM and ASME standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF72CG3 from Apollo is an RP Detector Assembly 2nd Check. Typical applications span fire protection, industrial processing, and marine environments. Apollo products are trusted by engineers and specifiers worldwide.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF72CC7 is an RP Detector Assembly 2nd Check. Typical applications span HVAC, industrial processing, and oil and gas 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 4ANLF72CE7 from Apollo is an RP Detector Assembly 2nd Check. It is commonly found in HVAC, plumbing, and commercial mechanical systems applications. Apollo Valves is recognized globally for engineering products that meet strict performance standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF72CG7 is an RP Detector Assembly 2nd Check. It is commonly found in HVAC, oil and gas, and industrial processing applications. The 4ANLF72CG7 reflects Apollo's long-standing reputation for quality and innovation. This product meets relevant ASME and UL standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF72CC8 is an RP Detector Assembly 2nd Check. This product serves professionals across oil and gas, HVAC, and commercial mechanical systems sectors. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. It is designed to comply with applicable ASME and UL requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF72CE8 from Apollo is an RP Detector Assembly 2nd Check. Typical applications span fire protection, commercial mechanical systems, and plumbing environments. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. It is designed to comply with applicable NSF and FM requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF72CG8 is an RP Detector Assembly 2nd Check. This product serves professionals across commercial mechanical systems, fire protection, and marine sectors. Backed by Apollo's commitment to quality, the 4ANLF72CG8 is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF72CE4 is an RP Detector Assembly 2nd Check. Typical applications span fire protection, oil and gas, and commercial mechanical systems environments. Backed by Apollo's commitment to quality, the 4ANLF72CE4 is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF72CC4 is an RP Detector Assembly 2nd Check. It is commonly found in fire protection, HVAC, and oil and gas applications. Backed by Apollo's commitment to quality, the 4ANLF72CC4 is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF72CG4 from Apollo is an RP Detector Assembly 2nd Check. This product serves professionals across plumbing, oil and gas, and commercial mechanical systems sectors. Apollo Valves is recognized globally for engineering products that meet strict performance standards. This product meets relevant UL and NSF standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF72CC6 is an RP Detector Assembly 2nd Check. Typical applications span oil and gas, 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 4ANLF72CE6 from Apollo is an RP Detector Assembly 2nd Check. This product serves professionals across plumbing, fire protection, and marine sectors. Backed by Apollo's commitment to quality, the 4ANLF72CE6 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
The Apollo 4ANLF72CG6 is an RP Detector Assembly 2nd Check. Typical applications span fire protection, marine, and oil and gas environments. As a leader in valves and flow control, Apollo manufactures every component to exacting standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF72CC10 is an RP Detector Assembly 2nd Check. Typical applications span HVAC, oil and gas, and industrial processing environments. The 4ANLF72CC10 reflects Apollo's long-standing reputation for quality and innovation. It is designed to comply with applicable ASME and UL requirements.
Requires Quote
Available for Purchase
Subject to factory lead times