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 4A629E6 is a DC 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 NSF and UL requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4A629G6 is a DC 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 ASME and UL requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4A628E2STF is a DC Detector Assembly. This product serves professionals across HVAC, industrial processing, and commercial mechanical systems sectors. The 4A628E2STF reflects Apollo's long-standing reputation for quality and innovation. It is designed to comply with applicable NSF and ASME requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4A62AE13 is a DC Detector Assembly. This product serves professionals across HVAC, fire protection, and commercial mechanical systems sectors. Backed by Apollo's commitment to quality, the 4A62AE13 is built to perform under real-world conditions. It is designed to comply with applicable UL and NSF requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4S10G03 is a Backflow Preventer. It is commonly found in plumbing, oil and gas, and industrial processing applications. Apollo products are trusted by engineers and specifiers worldwide. This product meets relevant ASME and UL standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4AN109010 is a Backflow Preventer. Typical applications span oil and gas, fire protection, and marine environments. Backed by Apollo's commitment to quality, the 4AN109010 is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF709C3 is an RP Detector Assembly. This product serves professionals across commercial mechanical systems, marine, 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
Part number 4ANLF709E3 from Apollo is an RP Detector Assembly. This product serves professionals across industrial processing, plumbing, and HVAC 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 4ANLF709E9 is an RP Detector Assembly. Typical applications span HVAC, commercial mechanical systems, and marine environments. Backed by Apollo's commitment to quality, the 4ANLF709E9 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 4AN709G6 is an RP Detector Assembly. It is commonly found in plumbing, oil and gas, and marine applications. The 4AN709G6 reflects Apollo's long-standing reputation for quality and innovation. This product meets relevant ASME and NSF standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4AN709E6 from Apollo is an RP Detector Assembly. This product serves professionals across commercial mechanical systems, fire protection, and industrial processing sectors. The 4AN709E6 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 Apollo 4AN709C6 is an RP Detector Assembly. Typical applications span commercial mechanical systems, HVAC, and oil and gas 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 4AN709E10 from Apollo is an RP Detector Assembly. Typical applications span oil and gas, commercial mechanical systems, and marine environments. The 4AN709E10 reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4AN709G10 is an RP Detector Assembly. It is commonly found in commercial mechanical systems, fire protection, and industrial processing applications. Backed by Apollo's commitment to quality, the 4AN709G10 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
Part number 4AN709C10 from Apollo is an RP Detector Assembly. It is commonly found in industrial processing, plumbing, and HVAC applications. Backed by Apollo's commitment to quality, the 4AN709C10 is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF700E9 is an RP Detector Assembly. This product serves professionals across oil and gas, commercial mechanical systems, and industrial processing sectors. The 4ANLF700E9 reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF700E3 from Apollo is an RP Detector Assembly. It is commonly found in fire protection, oil and gas, and commercial mechanical systems applications. Backed by Apollo's commitment to quality, the 4ANLF700E3 is built to perform under real-world conditions. This product meets relevant ASME and UL standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF70AC9 from Apollo is an RP Detector Assembly. It is commonly found in HVAC, commercial mechanical systems, and marine applications. Apollo Valves is recognized globally for engineering products that meet strict performance standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF70AE9 is an RP Detector Assembly. Typical applications span HVAC, plumbing, and industrial processing environments. 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 4ANLF70AG9 is an RP Detector Assembly. This product serves professionals across HVAC, industrial processing, and marine sectors. Backed by Apollo's commitment to quality, the 4ANLF70AG9 is built to perform under real-world conditions. It is designed to comply with applicable NSF and ASME requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF70AC3 is an RP Detector Assembly. This product serves professionals across HVAC, industrial processing, and oil and gas sectors. Apollo products are trusted by engineers and specifiers worldwide. This product meets relevant ASME and NSF standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF70AE3 from Apollo is an RP Detector Assembly. Typical applications span HVAC, plumbing, and industrial processing environments. The 4ANLF70AE3 reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF70AG3 is an RP Detector Assembly. This product serves professionals across HVAC, oil and gas, and industrial processing sectors. 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 4ANLF70AC7 is an RP Detector Assembly. It is commonly found in HVAC, oil and gas, and industrial processing applications. Apollo products are trusted by engineers and specifiers worldwide. This product meets relevant UL and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4A629E6 is a DC 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 NSF and UL requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4A629G6 is a DC 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 ASME and UL requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4A628E2STF is a DC Detector Assembly. This product serves professionals across HVAC, industrial processing, and commercial mechanical systems sectors. The 4A628E2STF reflects Apollo's long-standing reputation for quality and innovation. It is designed to comply with applicable NSF and ASME requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4A62AE13 is a DC Detector Assembly. This product serves professionals across HVAC, fire protection, and commercial mechanical systems sectors. Backed by Apollo's commitment to quality, the 4A62AE13 is built to perform under real-world conditions. It is designed to comply with applicable UL and NSF requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4S10G03 is a Backflow Preventer. It is commonly found in plumbing, oil and gas, and industrial processing applications. Apollo products are trusted by engineers and specifiers worldwide. This product meets relevant ASME and UL standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4AN109010 is a Backflow Preventer. Typical applications span oil and gas, fire protection, and marine environments. Backed by Apollo's commitment to quality, the 4AN109010 is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF709C3 is an RP Detector Assembly. This product serves professionals across commercial mechanical systems, marine, 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
Part number 4ANLF709E3 from Apollo is an RP Detector Assembly. This product serves professionals across industrial processing, plumbing, and HVAC 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 4ANLF709E9 is an RP Detector Assembly. Typical applications span HVAC, commercial mechanical systems, and marine environments. Backed by Apollo's commitment to quality, the 4ANLF709E9 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 4AN709G6 is an RP Detector Assembly. It is commonly found in plumbing, oil and gas, and marine applications. The 4AN709G6 reflects Apollo's long-standing reputation for quality and innovation. This product meets relevant ASME and NSF standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4AN709E6 from Apollo is an RP Detector Assembly. This product serves professionals across commercial mechanical systems, fire protection, and industrial processing sectors. The 4AN709E6 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 Apollo 4AN709C6 is an RP Detector Assembly. Typical applications span commercial mechanical systems, HVAC, and oil and gas 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 4AN709E10 from Apollo is an RP Detector Assembly. Typical applications span oil and gas, commercial mechanical systems, and marine environments. The 4AN709E10 reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4AN709G10 is an RP Detector Assembly. It is commonly found in commercial mechanical systems, fire protection, and industrial processing applications. Backed by Apollo's commitment to quality, the 4AN709G10 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
Part number 4AN709C10 from Apollo is an RP Detector Assembly. It is commonly found in industrial processing, plumbing, and HVAC applications. Backed by Apollo's commitment to quality, the 4AN709C10 is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF700E9 is an RP Detector Assembly. This product serves professionals across oil and gas, commercial mechanical systems, and industrial processing sectors. The 4ANLF700E9 reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF700E3 from Apollo is an RP Detector Assembly. It is commonly found in fire protection, oil and gas, and commercial mechanical systems applications. Backed by Apollo's commitment to quality, the 4ANLF700E3 is built to perform under real-world conditions. This product meets relevant ASME and UL standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF70AC9 from Apollo is an RP Detector Assembly. It is commonly found in HVAC, commercial mechanical systems, and marine applications. Apollo Valves is recognized globally for engineering products that meet strict performance standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF70AE9 is an RP Detector Assembly. Typical applications span HVAC, plumbing, and industrial processing environments. 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 4ANLF70AG9 is an RP Detector Assembly. This product serves professionals across HVAC, industrial processing, and marine sectors. Backed by Apollo's commitment to quality, the 4ANLF70AG9 is built to perform under real-world conditions. It is designed to comply with applicable NSF and ASME requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF70AC3 is an RP Detector Assembly. This product serves professionals across HVAC, industrial processing, and oil and gas sectors. Apollo products are trusted by engineers and specifiers worldwide. This product meets relevant ASME and NSF standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF70AE3 from Apollo is an RP Detector Assembly. Typical applications span HVAC, plumbing, and industrial processing environments. The 4ANLF70AE3 reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF70AG3 is an RP Detector Assembly. This product serves professionals across HVAC, oil and gas, and industrial processing sectors. 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 4ANLF70AC7 is an RP Detector Assembly. It is commonly found in HVAC, oil and gas, and industrial processing applications. Apollo products are trusted by engineers and specifiers worldwide. This product meets relevant UL and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times