Module 3
Module Pages
- Learning Objectives
- Methods Used to Prevent Backflow 1
- Methods Used to Prevent Backflow 2
- Considerations for Backflow Prevention Device Assemblies
- Air Gap
- Check Valves
- Velocity and Check Valves Relationship
- Reduced Pressure Principle Backflow Prevention Device Assembly
- Reduced Pressure Principle Backflow Prevention Device Assembly Test Cocks and valves
- Reduced Pressure Principle Backflow Prevention Device Assembly Relief Valve
- Reduced Pressure Principle Backflow Prevention Device Assembly Relief Valve Discharge Intermittently
- Reduced Pressure Principle Backflow Prevention Device Assembly Relief Valve Drainage
- Reduced Pressure Principle Backflow Prevention Device Assembly Relief Valve Catastrophic Discharge
- Reduced Pressure Principle Backflow Prevention Device Assembly Relief Valve Drainage Quality
- National Pollutant Discharge Elimination System (NPDES)
- Reduced Pressure Principle Backflow Prevention Device Assembly Check Valve Springs
- Reduced Pressure Principle Backflow Prevention Device Assembly Relief Valve Spring and Operation
- Reduced Pressure Principle Backflow Prevention Device Assembly Pressure Losses
- Reduced Pressure Principle Backflow Prevention Device Installed on Service Line Backflow Condition - Fouled Second Check Valve
- Reduced Pressure Principle Backflow Prevention Device Assembly Rate of Flow and Pressure Loss
- Reduced Pressure Principle Backflow Prevention Device Assemblies Installed on Fire Protection Systems – Reduced Pressure Principle Detector Assemblies
- Operating Principles of a Reduced Pressure Principle Backflow Prevention Device Assembly Out of the Box or Dewatered
- RPZ in a Flow or Dynamic State – Relief Valve Closed
- RPZ in a Flow or Dynamic State – First Check Valve Opened
- RPZ in a Flow or Dynamic State – Second Check Valve Opens
- RPZ in a Flow or Dynamic State – Relief Valve Discharges Water
- RPZ in a No-Flow or Static State and Relief Valve Opened Discharging Continually First Check Fouled Open and Second Check Valve Closed Tight
- RPZ in a Backpressure Backflow State – First and Second Check Valves Holding Tight Relief Valve Closed NOT Discharging
- Backpressure Backflow - First Check Valve Fouled Open - Second Check Valve Holding Tight Relief Valve Opened Discharging
- Backpressure Backflow – First Check Valve Tight - Second Check Valve Fouled Open Relief Valve Opened Discharging Constantly or Intermittently
- Backpressure Backflow – First Check Valve Tight - Second Check Valve Fouled Open Relief Valve Opened Discharging Constantly or Intermittently
- Backsiphonage Backflow – Relief Valve Opened – First and Second Check Valves Closed
- Backsiphonage Backflow – Relief Valve Opened – First Check Valves Fouled Open and Second Check Valve Closed
- Backsiphonage Backflow – Relief Valve Opened – First Check Valve Closed and Second Check Valves Fouled Open
- Backsiphonage Backflow – Relief Valve Opened – Both Check Valves Fouled Open
- Relief Valve Will Not Open During Dynamic or Static State
- The Double Check Valve Device Assembly
- The Double Check Valve Device Assembly - Test Cocks and Check Valve Springs
- The Double Check Valve Device Assembly - Check Valve Springs and Design Standards
- The Double Check Valve Device Assembly – Rate of Flow and Pressure Loss
- The Double Check Valve Device Assembly – Pressure Loss
- The Double Check Valve Device Assembly – Use and Installations
- The Double Check Valve Device Assembly Shape and Sizes
- The Principle Operation of a Double Check Valve Backflow Prevention Device Assembly The Double Check Valve Device Assembly (DCVA) – No-Flow or Static State
- The Double Check Valve Device Assembly (DCVA) – Flow or Dynamic State
- The Double Check Valve Device Assembly (DCVA) – Flow or Dynamic State with Backpressure First and Second Check Valves Holding Tight
- The Double Check Valve Device Assembly (DCVA) – Flow or Dynamic State with Backpressure Second Check Valve Fouled Open and First Holding Tight
- The Double Check Valve Device Assembly (DCVA) – Flow or Dynamic State with Backpressure Second Check Valve Holding Tight and First Check Valve Fouled Open
- The Double Check Valve Device Assembly (DCVA) – Flow or Dynamic State with Backpressure Second and First Check Valve Fouled Open
- The Double Check Valve Device Assembly – Flow or Dynamic State with Backsiphonage First and Second Check Valves Holding Tight
- The Double Check Valve Device Assembly – Flow or Dynamic State with Backsiphonage First Check Fouled Open and Second Check Valve Holding Tight
- The Double Check Valve Device Assembly – Flow or Dynamic State with Backsiphonage First Check Closed Tight and Second Check Valve Fouled Open
- The Double Check Valve Device Assembly – Flow or Dynamic State with Backsiphonage First and Second Check Valve Fouled Open
- The Principle Operation of a Pressure Vacuum Breaker Backflow Prevention Device Assembly
- The Principle Operation of a Pressure Vacuum Breaker Backflow Prevention Device Assembly Check Valve and Air Inlet Valve Springs
- The Principle Operation of a Pressure Vacuum Breaker Backflow Prevention Device Assembly - Installation Considerations
- The Principle Operation of a Pressure Vacuum Breaker Backflow Prevention Device Assembly - Typical Installations
- The Principle Operation of a Pressure Vacuum Breaker Backflow Prevention Device Assembly - Air Inlet Valve and Drainage
- The Principle Operation of a Pressure Vacuum Breaker Backflow Prevention Device Assembly - No Water out-of-the-box
- The Principle Operation of a Pressure Vacuum Breaker Backflow Prevention Device Assembly - Flowing or Dynamic State
- The Principle Operation of a Pressure Vacuum Breaker Backflow Prevention Device Assembly - Flow Capacity
- Pressure Vacuum Breaker Backflow Prevention Device Assembly - No Flow or Static State
- Pressure Vacuum Breaker Backflow Prevention Device Assembly - Pressure Loss Across the Check Valve Dynamic State
- Pressure Vacuum Breaker Backflow Prevention Device Assembly - Backflow Backsiphonage
- Pressure Vacuum Breaker Backflow Prevention Device Assembly - Backsiphonage Condition – Check Valve Not Drip Tight
- The Principle Operation of a Spill-Resistant Pressure Vacuum Breaker - Backflow Prevention Device Assembly
- Spill-Resistant Pressure Vacuum Breaker Backflow Prevention Device Assembly - Check Valve and Air Inlet Valve Springs
- Spill-Resistant Pressure Vacuum Breaker Backflow Prevention Device Assembly - Installation Considerations
- Spill-Resistant Pressure Vacuum Breaker Backflow Prevention Device Assembly - Typical Installations
- Spill-Resistant Pressure Vacuum Breaker Backflow Prevention Device Assembly - Air Inlet Valve and Drainage
- Spill-Resistant Pressure Vacuum Breaker Backflow Prevention Device Assembly - No Water out-of-the-box
- Spill-Resistant Pressure Vacuum Breaker Backflow Prevention Device Assembly - Flowing or Dynamic State
- Spill-Resistant Pressure Vacuum Breaker Backflow Prevention Device Assembly - Flow Capacity
- Spill-Resistant Pressure Vacuum Breaker Backflow Prevention Device Assembly - No Flow or Static State
- Spill-Resistant Pressure Vacuum Breaker Backflow Prevention Device Assembly - Pressure Loss Across the Check Valve - Dynamic State
- Spill-Resistant Pressure Vacuum Breaker Backflow Prevention Device Assembly - Backsiphonage Condition
- Spill-Resistant Pressure Vacuum Breaker Backflow Prevention Device Assembly - Backsiphonage Condition – Check Valve Not Drip Tight
- The Principle Operation of an Atmospheric Vacuum Breaker Backflow Prevention Device
- The Principle Operation of an Atmospheric Vacuum Breaker Backflow Prevention Device - Check Valve and Air Inlet Valve
- The Principle Operation of an Atmospheric Vacuum Breaker Backflow Prevention Device - Installation Considerations
- The Principle Operation of an Atmospheric Vacuum Breaker Backflow Prevention Device - Typical Installations
- The Principle Operation of an Atmospheric Vacuum Breaker Backflow Prevention Device - Air Inlet Valve and Drainage
- The Principle Operation of an Atmospheric Vacuum Breaker Backflow Prevention Device - No-Water Out of the Box
- The Principle Operation of an Atmospheric Vacuum Breaker Backflow Prevention Device - Flowing Dynamic State
- The Principle Operation of an Atmospheric Vacuum Breaker Backflow Prevention Device - Flow Capacity
- The Principle Operation of an Atmospheric Vacuum Breaker Backflow Prevention Device - No-Flow Static State
- The Principle Operation of an Atmospheric Vacuum Breaker Backflow Prevention Device - Pressure Loss – Dynamic State
- The Principle Operation of an Atmospheric Vacuum Breaker Backflow Prevention Device - Backflow Backsiphonage
- The Principle Operation of an Atmospheric Vacuum Breaker Backflow Prevention Device - Backflow Backsiphonage – Check Valve Not Holding Tight
- The Principle Operation of a Dual Check Valve with Intermediate Atmospheric Vent - Backflow Prevention Device
- The Principle Operation of a Dual Check Valve with Intermediate Atmospheric Vent - Backflow Prevention Device – Check Valve and Atmospheric Vent
- The Principle Operation of a Dual Check Valve with Intermediate Atmospheric Vent - Backflow Prevention Device – Installation Considerations
- The Principle Operation of a Dual Check Valve with Intermediate Atmospheric Vent - Backflow Prevention Device –Typical Installations
- The Principle Operation of a Dual Check Valve with Intermediate Atmospheric Vent - Backflow Prevention Device – Intermediate Atmospheric Vent and Drainage
- The Principle Operation of a Dual Check Valve with Intermediate Atmospheric Vent - Backflow Prevention Device – No Water Out of the Box
- The Principle Operation of a Dual Check Valve with Intermediate Atmospheric Vent - Backflow Prevention Device – Flowing or Dynamic State
- The Principle Operation of a Dual Check Valve with Intermediate Atmospheric Vent - Backflow Prevention Device – Flow Capacity
- The Principle Operation of a Dual Check Valve with Intermediate Atmospheric Vent - Backflow Prevention Device – Pressure Loss Across Check Valves Dynamic State
- The Principle Operation of a Dual Check Valve with Intermediate Atmospheric Vent - Backflow Prevention Device – No Flow or Static State
- The Principle Operation of a Dual Check Valve with Intermediate Atmospheric Vent - Backflow Prevention Device – Backflow Backpressure
- The Principle Operation of a Dual Check Valve with Intermediate Atmospheric Vent - Backflow Prevention Device – Backflow Backsiphonage
- Dual Check Valve with Intermediate Atmospheric Vent Backflow Prevention Device – Backflow Condition - First Check Valve Not Drip Tight
- Dual Check Valve with Intermediate Atmospheric Vent Backflow Prevention Device - Backflow Condition - Second Check Valve Not Drip Tight
- Dual Check Valve with Intermediate Atmospheric Vent Backflow Prevention Device - Backflow Condition - First and Second Check Valve Not Drip Tight
- The Principle Operation of a Dual Check Valve Backflow Prevention Device - General Specifications
- The Principle Operation of a Dual Check Valve Backflow Prevention Device - Check Valves and Check Valve Springs
- The Principle Operation of a Dual Check Valve Backflow Prevention Device - Installation Considerations
- The Principle Operation of a Dual Check Valve Backflow Prevention Device - Typical Installations
- The Principle Operation of a Dual Check Valve Backflow Prevention Device - No Water Out of the Box
- The Principle Operation of a Dual Check Valve Backflow Prevention Device - Flowing or Dynamic State
- The Principle Operation of a Dual Check Valve Backflow Prevention Device - Flow Capacity
- The Principle Operation of a Dual Check Valve Backflow Prevention Device - Pressure Loss Across Check Valves - Dynamic State
- The Principle Operation of a Dual Check Valve Backflow Prevention Device - No Flow or Static State
- The Principle Operation of a Dual Check Valve Backflow Prevention Device - Backflow Backpressure - Condition Both Check Valve Holding Tight
- The Principle Operation of a Dual Check Valve Backflow Prevention Device - Backflow Backsiphonage Condition Both Check Valve Holding Tight
- Dual Check Valve Backflow Prevention Device – Backflow Backpressure Condition - First or Second Check Valve Not Drip Tight
- Dual Check Valve Backflow Prevention Device – Backflow Backsiphonage Condition - First or Second Check Valve Not Drip Tight
- The Principle Operation of a Hose Bibb Vacuum Breaker Backflow Prevention Device - General Specifications
- The Principle Operation of a Hose Bibb Vacuum Breaker Backflow Prevention Device - Installation
- The Principle Operation of a Hose Bibb Vacuum Breaker Backflow Prevention Device - Continuous Pressure and Backpressure
- The Principle Operation of a Hose Bibb Vacuum Breaker Backflow Prevention Device - Backflow Prevention
- The Principle Operation of a Hose Connection Dual Check Valve Vacuum Breaker - Backflow Prevention Device - General Specifications
- The Principle Operation of a Hose Connection Dual Check Valve Vacuum Breaker - Backflow Prevention Device - Installation Considerations
- The Principle Operation of a Hose Connection Dual Check Valve Vacuum Breaker - Backflow Prevention Device – Continuous Pressure and Backpressure
- The Principle Operation of a Hose Connection Dual Check Valve Vacuum Breaker - Backflow Prevention Device - Backflow Prevention Backsiphonage Condition
- The Principle Operation of a Hose Connection Dual Check Valve Vacuum Breaker - Backflow Prevention Device - Backflow Prevention Backpressure Condition
- The Principle Operation of a Laboratory Faucet Dual Check Vacuum Breaker - Backflow Prevention Device - General Specifications
- The Principle Operation of a Laboratory Faucet Dual Check Vacuum Breaker - Backflow Prevention Device - Installation Considerations
- The Principle Operation of a Laboratory Faucet Dual Check Vacuum Breaker - Backflow Prevention Device - Continuous Pressure and Backpressure
- The Principle Operation of a Laboratory Faucet Dual Check Vacuum Breaker - Backflow Prevention Device - Backflow Prevention Backsiphonage Condition
- The Principle Operation of a Laboratory Faucet Dual Check Vacuum Breaker - Backflow Prevention Device - Backflow Prevention Backsiphonage Condition Check Valve Failure
- The Principle Operation of a Laboratory Faucet Dual Check Vacuum Breaker - Backflow Prevention Device - Backflow Prevention Backpressure Condition Check Valve Failure
- The Principle Operation of a Backflow Prevention Device for Beverage Dispensing Equipment - General Specifications
- The Principle Operation of a Backflow Prevention Device for Beverage Dispensing Equipment - Installation Considerations ASSE 1032 and ASSE 1022
- The Principle Operation of a Backflow Prevention Device for Beverage Dispensing Equipment - Installation Considerations
- The Principle Operation of a Backflow Prevention Device for Beverage Dispensing Equipment - Normal Operation and Pressure Loss
- The Principle Operation of a Backflow Prevention Device for Beverage Dispensing Equipment - Backflow Prevention Backpressure Condition
- The Principle Operation of a Backflow Prevention Device for Beverage Dispensing Equipment - Backflow Prevention Backsiphonage Condition
- The Principle Operation of Chemical Dispensers
- Freeze Resistant Sanitary Yard Hydrants with Backflow Protection
- The Principle Operation of a Barometric Loop Backflow Prevention Method
- Fire Hydrant Backflow Prevention Device Assemblies with Meter - General Discussion
- Fire Hydrant Backflow Prevention Device Assemblies with Meter - Installation
- Strainers for Backflow Prevention Device Assemblies - General Specifications
- Strainers for Backflow Prevention Device Assemblies - Installations
- Pressure Reducing Valves and Backflow Prevention Device/Assemblies - General Specifications
- Pressure Reducing Valves and Backflow Prevention Device/Assemblies Installation
- Freeze Protection Valves
- Draining a Backflow Prevention Device Assembly