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 4A203T4 is a Bronze RP Backflow Preventer 1/2". It is commonly found in plumbing, oil and gas, and fire protection applications. The 4A203T4 reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4A218A4 from Apollo is a Bronze RP Backflow Preventer 2". It is commonly found in commercial mechanical systems, plumbing, and industrial processing applications. Apollo products are trusted by engineers and specifiers worldwide.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4A208A2 from Apollo is a Bronze RP Backflow Preventer 2". Typical applications span plumbing, HVAC, and commercial mechanical systems environments. The 4A208A2 reflects Apollo's long-standing reputation for quality and innovation. It is designed to comply with applicable NSF and FM requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4A218A2F from Apollo is a Bronze RP Backflow Preventer 2". Typical applications span industrial processing, plumbing, and HVAC environments. Backed by Apollo's commitment to quality, the 4A218A2F is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4A208A2F from Apollo is a Bronze RP Backflow Preventer 2". It is commonly found in plumbing, commercial mechanical systems, 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 FM and ASME requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4A204A2F is a Bronze RP Backflow Preventer 3/4". Typical applications span plumbing, fire protection, and commercial mechanical systems environments. The 4A204A2F reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4A204A4F from Apollo is a Bronze RP Backflow Preventer 3/4". This product serves professionals across plumbing, fire protection, 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
The Apollo Valves 4A203T4 is a Bronze RP Backflow Preventer 1/2". It is commonly found in plumbing, oil and gas, and fire protection applications. The 4A203T4 reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4A218A4 from Apollo is a Bronze RP Backflow Preventer 2". It is commonly found in commercial mechanical systems, plumbing, and industrial processing applications. Apollo products are trusted by engineers and specifiers worldwide.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4A208A2 from Apollo is a Bronze RP Backflow Preventer 2". Typical applications span plumbing, HVAC, and commercial mechanical systems environments. The 4A208A2 reflects Apollo's long-standing reputation for quality and innovation. It is designed to comply with applicable NSF and FM requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4A218A2F from Apollo is a Bronze RP Backflow Preventer 2". Typical applications span industrial processing, plumbing, and HVAC environments. Backed by Apollo's commitment to quality, the 4A218A2F is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4A208A2F from Apollo is a Bronze RP Backflow Preventer 2". It is commonly found in plumbing, commercial mechanical systems, 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 FM and ASME requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4A204A2F is a Bronze RP Backflow Preventer 3/4". Typical applications span plumbing, fire protection, and commercial mechanical systems environments. The 4A204A2F reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4A204A4F from Apollo is a Bronze RP Backflow Preventer 3/4". This product serves professionals across plumbing, fire protection, 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