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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The Apollo Valves 4ANLF72CE10 is an RP Detector Assembly 2nd Check. Typical applications span HVAC, oil and gas, and marine environments. 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 4ANLF72CG10 from Apollo is an RP Detector Assembly 2nd Check. This product serves professionals across HVAC, commercial mechanical systems, and industrial processing sectors. The 4ANLF72CG10 reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF72EC9 is an RP Detector Assembly 2nd Check. Typical applications span fire protection, marine, and HVAC environments. Apollo Valves is recognized globally for engineering products that meet strict performance standards. This product meets relevant UL and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF72EE9 from Apollo is an RP Detector Assembly 2nd Check. This product serves professionals across oil and gas, fire protection, and industrial processing sectors. The 4ANLF72EE9 reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF72EG9 is an RP Detector Assembly 2nd Check. Typical applications span HVAC, commercial mechanical systems, and marine environments. Apollo products are trusted by engineers and specifiers worldwide. This product meets relevant ASME and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF72EC3 from Apollo is an RP Detector Assembly 2nd Check. It is commonly found in fire protection, industrial processing, and HVAC applications. Backed by Apollo's commitment to quality, the 4ANLF72EC3 is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF72EE3 is an RP Detector Assembly 2nd Check. It is commonly found in fire protection, industrial processing, and HVAC applications. Apollo Valves is recognized globally for engineering products that meet strict performance standards. It is designed to comply with applicable FM and ASME requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF72EG3 is an RP Detector Assembly 2nd Check. This product serves professionals across industrial processing, plumbing, 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 NSF requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF72EC7 is an RP Detector Assembly 2nd Check. This product serves professionals across HVAC, commercial mechanical systems, and oil and gas 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
The 4ANLF72EE7 from Apollo is an RP Detector Assembly 2nd Check. Typical applications span oil and gas, plumbing, and industrial processing environments. Backed by Apollo's commitment to quality, the 4ANLF72EE7 is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF72EG7 from Apollo is an RP Detector Assembly 2nd Check. This product serves professionals across HVAC, industrial processing, and marine sectors. Backed by Apollo's commitment to quality, the 4ANLF72EG7 is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF72EC8 is an RP Detector Assembly 2nd Check. It is commonly found in commercial mechanical systems, oil and gas, and plumbing applications. Backed by Apollo's commitment to quality, the 4ANLF72EC8 is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF72EE8 from Apollo is an RP Detector Assembly 2nd Check. It is commonly found in commercial mechanical systems, fire protection, and oil and gas applications. 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
Part number 4ANLF72EG8 from Apollo is an RP Detector Assembly 2nd Check. Typical applications span plumbing, commercial mechanical systems, and industrial processing environments. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. This product meets relevant UL and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF72EC4 from Apollo is an RP Detector Assembly 2nd Check. This product serves professionals across fire protection, marine, and plumbing sectors. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. It is designed to comply with applicable NSF and UL requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF72EE4 is an RP Detector Assembly 2nd Check. Typical applications span oil and gas, HVAC, and fire protection 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
Part number 4ANLF72EG4 from Apollo is an RP Detector Assembly 2nd Check. This product serves professionals across plumbing, commercial mechanical systems, and fire protection sectors. Backed by Apollo's commitment to quality, the 4ANLF72EG4 is built to perform under real-world conditions. It is designed to comply with applicable ASME and NSF requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF72EC6 is an RP Detector Assembly 2nd Check. Typical applications span plumbing, fire protection, and commercial mechanical systems environments. 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 4ANLF72EE6 is an RP Detector Assembly 2nd Check. It is commonly found in oil and gas, fire protection, 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
Part number 4ANLF72EG6 from Apollo is an RP Detector Assembly 2nd Check. It is commonly found in fire protection, HVAC, and plumbing applications. The 4ANLF72EG6 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
The Apollo 4ANLF72EC10 is an RP Detector Assembly 2nd Check. This product serves professionals across industrial processing, marine, and HVAC sectors. The 4ANLF72EC10 reflects Apollo's long-standing reputation for quality and innovation. This product meets relevant UL and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF72EE10 from Apollo is an RP Detector Assembly 2nd Check. This product serves professionals across fire protection, industrial processing, and marine sectors. Apollo products are trusted by engineers and specifiers worldwide.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF72EG10 from Apollo is an RP Detector Assembly 2nd Check. This product serves professionals across HVAC, fire protection, and industrial processing sectors. 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 4ANLF70CBPC is a Kit, Byp Type-1. It is commonly found in plumbing, commercial mechanical systems, and oil and gas applications. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. This product meets relevant UL and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF72CE10 is an RP Detector Assembly 2nd Check. Typical applications span HVAC, oil and gas, and marine environments. 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 4ANLF72CG10 from Apollo is an RP Detector Assembly 2nd Check. This product serves professionals across HVAC, commercial mechanical systems, and industrial processing sectors. The 4ANLF72CG10 reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF72EC9 is an RP Detector Assembly 2nd Check. Typical applications span fire protection, marine, and HVAC environments. Apollo Valves is recognized globally for engineering products that meet strict performance standards. This product meets relevant UL and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF72EE9 from Apollo is an RP Detector Assembly 2nd Check. This product serves professionals across oil and gas, fire protection, and industrial processing sectors. The 4ANLF72EE9 reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF72EG9 is an RP Detector Assembly 2nd Check. Typical applications span HVAC, commercial mechanical systems, and marine environments. Apollo products are trusted by engineers and specifiers worldwide. This product meets relevant ASME and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF72EC3 from Apollo is an RP Detector Assembly 2nd Check. It is commonly found in fire protection, industrial processing, and HVAC applications. Backed by Apollo's commitment to quality, the 4ANLF72EC3 is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF72EE3 is an RP Detector Assembly 2nd Check. It is commonly found in fire protection, industrial processing, and HVAC applications. Apollo Valves is recognized globally for engineering products that meet strict performance standards. It is designed to comply with applicable FM and ASME requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF72EG3 is an RP Detector Assembly 2nd Check. This product serves professionals across industrial processing, plumbing, 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 NSF requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF72EC7 is an RP Detector Assembly 2nd Check. This product serves professionals across HVAC, commercial mechanical systems, and oil and gas 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
The 4ANLF72EE7 from Apollo is an RP Detector Assembly 2nd Check. Typical applications span oil and gas, plumbing, and industrial processing environments. Backed by Apollo's commitment to quality, the 4ANLF72EE7 is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF72EG7 from Apollo is an RP Detector Assembly 2nd Check. This product serves professionals across HVAC, industrial processing, and marine sectors. Backed by Apollo's commitment to quality, the 4ANLF72EG7 is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF72EC8 is an RP Detector Assembly 2nd Check. It is commonly found in commercial mechanical systems, oil and gas, and plumbing applications. Backed by Apollo's commitment to quality, the 4ANLF72EC8 is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF72EE8 from Apollo is an RP Detector Assembly 2nd Check. It is commonly found in commercial mechanical systems, fire protection, and oil and gas applications. 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
Part number 4ANLF72EG8 from Apollo is an RP Detector Assembly 2nd Check. Typical applications span plumbing, commercial mechanical systems, and industrial processing environments. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. This product meets relevant UL and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF72EC4 from Apollo is an RP Detector Assembly 2nd Check. This product serves professionals across fire protection, marine, and plumbing sectors. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. It is designed to comply with applicable NSF and UL requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF72EE4 is an RP Detector Assembly 2nd Check. Typical applications span oil and gas, HVAC, and fire protection 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
Part number 4ANLF72EG4 from Apollo is an RP Detector Assembly 2nd Check. This product serves professionals across plumbing, commercial mechanical systems, and fire protection sectors. Backed by Apollo's commitment to quality, the 4ANLF72EG4 is built to perform under real-world conditions. It is designed to comply with applicable ASME and NSF requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF72EC6 is an RP Detector Assembly 2nd Check. Typical applications span plumbing, fire protection, and commercial mechanical systems environments. 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 4ANLF72EE6 is an RP Detector Assembly 2nd Check. It is commonly found in oil and gas, fire protection, 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
Part number 4ANLF72EG6 from Apollo is an RP Detector Assembly 2nd Check. It is commonly found in fire protection, HVAC, and plumbing applications. The 4ANLF72EG6 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
The Apollo 4ANLF72EC10 is an RP Detector Assembly 2nd Check. This product serves professionals across industrial processing, marine, and HVAC sectors. The 4ANLF72EC10 reflects Apollo's long-standing reputation for quality and innovation. This product meets relevant UL and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF72EE10 from Apollo is an RP Detector Assembly 2nd Check. This product serves professionals across fire protection, industrial processing, and marine sectors. Apollo products are trusted by engineers and specifiers worldwide.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF72EG10 from Apollo is an RP Detector Assembly 2nd Check. This product serves professionals across HVAC, fire protection, and industrial processing sectors. 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 4ANLF70CBPC is a Kit, Byp Type-1. It is commonly found in plumbing, commercial mechanical systems, and oil and gas applications. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. This product meets relevant UL and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times