air valve basic training - home - ohio water environment ... - air valve basic training...
TRANSCRIPT
![Page 1: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/1.jpg)
Air Valve Basic TrainingAir Valve Basic TrainingOWEA Collection System Specialty OWEA Collection System Specialty
ConferenceConference
Dan Barr, PEDan Barr, PE
Burgess & Niple, Inc.Burgess & Niple, Inc.
![Page 2: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/2.jpg)
OverviewOverview
• Why Air Valves?• Types of Valves• Valve Locations• Sizing Valves• Valve Specifications• Installations• Questions
![Page 3: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/3.jpg)
OverviewOverview
• Information based on:– AWWA Manual of Water Supply Practices M51 Air‐Release, Air/Vacuum & Combination Air Valves
– Manufacturers' published information
– Our experience in design and the field
![Page 4: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/4.jpg)
Why Air Valves?Why Air Valves?
![Page 5: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/5.jpg)
Why Air Valves?Why Air Valves?
Effects of Air and Vacuum Pockets in Pipelines
• Higher Headloss and Binding
• Pipe Breaks
• Erratic operation of pumps, meters, and control valves
• Collapsed pipes
![Page 6: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/6.jpg)
Why Air Valves?Why Air Valves?
Sources of Air Entry in Pipelines
• Dissolved Air or Gas (2% at 1 atm)
• Air Valves
• Pumps
• Filling Empty Pipelines
![Page 7: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/7.jpg)
Why Air Valves?Why Air Valves?
Sources of Vacuums in Pipelines
• Draining Pipelines
•Water Hammer
![Page 8: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/8.jpg)
Types of Air ValvesTypes of Air Valves
![Page 9: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/9.jpg)
Super High Capacity Compound Lever Air Release Valve
High Capacity Compound Lever Air Release Valve
Compound Lever Air Release Valve
High Capacity Simple Lever Air Release Valve
Simple Lever Air Release Valve
“Minimatic” Air Release Valve
Short Body Wastewater Air Release Valve
High Capacity Wastewater Air Release Valve
All Stainless Steel Air Release Valve
Wastewater Air Release Valve
Stainless Steel Air & Vacuum Valve
Short Body Wastewater Air & Vacuum Valve
Wastewater Air & Vacuum Valve
KINETIC Deep Well Pump Air & Vacuum Valve
KINETIC Slow‐Closing Air & Vacuum ValveKINETIC Air & Vacuum Valve to 4“
Stainless Steel Wastewater Combination Air Valve
Stainless Steel Single Body Wastewater Combination Air Valve
Short Body Wastewater Combination Air Valve
Dual Body Wastewater Combination Air Valve w/ High Capacity Air Release
Dual Body Wastewater Combination Air Valve
Single Body Wastewater Combination Air Valve
KINETIC Custom Slow Closing Combination Air Valve
KINETIC Slow Closing Combination Air Valve
KINETIC Combination Air Valve
KINETIC Custom Combination Air Valve
Compact KINETIC Combination Air Valve
Combination Vacuum Breaking and Air Release Valve
Vacuum Breaking Valve
Combination Vacuum Breaking and Air Release Valve for Wastewater
Air Release Valve (Compound Lever Type)
Air Release Valve (Simple Lever Type)
Sewage Air Release Valve
Air/Vacuum Valve w/ Optional Surge Suppression Valve
Wastewater Air/Vacuum Valve
Combination Air Valve (Single Housing Type)
Wastewater Combination Air Valve
Vacuum Relief Air Valve
Well Service Air Valve
Air and Vacuum Valve
Combination Air Valve
Dual Air Valve
Deep Well Valve
Foot Valve Hydraulically Controlled Air/Vacuum Valves
Midget Valve Negative Pressure Valve Pressure Air Release Valve
Low Vol. Pressure Air Release Valve
Universal Air Release Valve
Vacuum Relief Valve Air Release Valves (Sewage)
Air and Vacuum Sewer Valve
Pressure Sewer Air Release Valve
Combination Sewer Valve
Universal Sewer Air Release Valve
Sewage Air Valves
Air Valves for Vertical Turbine Pumps
Slow Closing Air/Vacuum Valves
Vacuum Relief Air Inlet Valves
Simple, right?Simple, right?
![Page 10: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/10.jpg)
Types of Air ValvesTypes of Air Valves
Three Basic Types•Air Release Valves
•Air / Vacuum Valves
•Combination Air Valves
![Page 11: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/11.jpg)
Air Release ValvesAir Release Valves
• Automatically releases small pockets of accumulated air while the pipeline operates under pressure.
![Page 12: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/12.jpg)
Air Release Valve OperationAir Release Valve Operation
• Pipeline Flowing
• Air Trapped
• Air Released
• Repeat Cycle
![Page 13: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/13.jpg)
Air / Vacuum ValvesAir / Vacuum Valves
• Designed to automatically:
– Exhaust large quantities of air during pipeline filling.
– Admit large amounts of air when the internal pressure drops below atmospheric.
![Page 14: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/14.jpg)
Air / Vacuum Valve OperationAir / Vacuum Valve Operation
• Pipe Empty
• Valve Open
• Pipe Fills
• Valve Closes
![Page 15: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/15.jpg)
Air / Vacuum Valve OperationAir / Vacuum Valve Operation
• Pipe Drains
• Air Intake
![Page 16: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/16.jpg)
Air / Vacuum Valve CycleAir / Vacuum Valve Cycle
• Pipe Empty
• Valve Open
• Pipe Fills
• Valve Closes
• Pipe Drains
• Air Intake
![Page 17: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/17.jpg)
Combination Air ValvesCombination Air Valves
• Perform both as air release and air/vacuum valves.
![Page 18: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/18.jpg)
CombinationCombination
![Page 19: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/19.jpg)
Combination Air Valve OperationCombination Air Valve Operation
![Page 20: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/20.jpg)
Locating Air Valves Locating Air Valves Along a PipelineAlong a Pipeline
(Or Thinking like an Air Bubble)(Or Thinking like an Air Bubble)
![Page 21: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/21.jpg)
Locating Air Valves Locating Air Valves
Install valves where air will be trapped or
vacuum pockets will form!
![Page 22: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/22.jpg)
Locating Air Valves Locating Air Valves Along a Force MainAlong a Force Main
Lift Station
Manhole
Pumps Operating and Line is Full
![Page 23: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/23.jpg)
Locating Air Valves Locating Air Valves Along a Force MainAlong a Force Main
Lift Station
Manhole
Pumps Operating and Line is Full
![Page 24: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/24.jpg)
Locating Air Valves Locating Air Valves Along a Force MainAlong a Force Main
Lift Station
Manhole
Pumps Operating and Line is Full
Air Release
Air Release
![Page 25: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/25.jpg)
High PointsHigh Points
Lift Station
Manhole
Potential Vacuum
Pumps Stopped and Line is Draining
![Page 26: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/26.jpg)
High PointsHigh Points
Lift Station
Manhole
Pumps Start and Vacuum Pockets Close with Pressure Spikes
![Page 27: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/27.jpg)
High PointsHigh Points
Lift Station
Manhole
Combination Air Valve
Combination Air Valve
Pumps Stopped, Line is Drained, and High Points are Full of Air
![Page 28: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/28.jpg)
High PointsHigh Points
Lift Station
Manhole
Any Air Valves?
![Page 29: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/29.jpg)
High PointsHigh Points
Lift Station
Manhole
No Vacuum Points!
![Page 30: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/30.jpg)
High PointsHigh Points
Lift Station
ManholeAir Trapped
![Page 31: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/31.jpg)
High PointsHigh Points
Lift Station
ManholeAutomatic Air Release Manual Air Release
![Page 32: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/32.jpg)
PumpsPumps
• Carefully review deep pump installations when over 20 feet deep.
• May need Air/Vac valve
• Examples include: vertical turbines and deep submersibles.
![Page 33: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/33.jpg)
PumpsPumps
• Line Full
• Pump On
![Page 34: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/34.jpg)
PumpsPumps
• Pump Off
• Vacuum Develops
![Page 35: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/35.jpg)
• Pump Turns On
• Pumps Against Vacuum
• Slams Check Valve
PumpsPumps
![Page 36: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/36.jpg)
PumpsPumps
• Add Air/Vac Valve
• Air Enters System to Eliminate Vacuum
![Page 37: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/37.jpg)
PumpsPumps
• Add Air/Vac Valve
• Air Enters System to Eliminate Vacuum
• Air Released at Controlled Rate
![Page 38: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/38.jpg)
Sizing ValvesSizing Valves
![Page 39: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/39.jpg)
Air ReleaseAir Release
• Convert pipeline flow rate to Cubic Feet per Minute (CFM).
• Multiply CFM by 0.02 to estimate dissolved air in water.
• Determine the working pressure at the valve.
• Refer to Orifice Air Capacity Table in AWWA manual or manufacturer tables.
![Page 40: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/40.jpg)
Air ReleaseAir Release
![Page 41: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/41.jpg)
Air/Vac ValvesAir/Vac Valves
• Determine required valve size for both filling and draining independently
• Use the larger diameter for air/vac valve sizing
![Page 42: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/42.jpg)
Pipeline FillingPipeline Filling
• Calculate the venting flow rate in CFM.
Venting Flow Rate = Fill Rate (CFM) * [(Pressure Differential across valve + 14.7 psi)/14.7 psi]
• Refer to sizing tables to select Air/Vac valve diameter.
• Use a 2 psi differential generally.
![Page 43: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/43.jpg)
Pipeline FillingPipeline Filling
![Page 44: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/44.jpg)
Pipeline Draining or Vacuum Pipeline Draining or Vacuum PreventionPrevention
• Determine the allowable negative pressure for the pipeline with a safety factor. Assume 5.0 psi for a max.
• Calculate the slope of the pipeline in ft/ft.
• Use following figure to determine the required CFM.
• Refer to table to select the required air/vac valve diameter.
![Page 45: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/45.jpg)
Pipeline Draining or Vacuum Pipeline Draining or Vacuum PreventionPrevention
Table for Determining Air Flow when Draining Pipelines
![Page 46: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/46.jpg)
Pipeline Draining or Vacuum Pipeline Draining or Vacuum PreventionPrevention
Table for Sizing Air/Vac Valves when Draining Pipelines
![Page 47: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/47.jpg)
Valve SpecificationsValve Specifications
![Page 48: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/48.jpg)
Air Release ValvesAir Release Valves
• Orifice Size (1/16” to 1”)• NPT Inlet size (1/2” to 3”)• Maximum Working Pressure (75 psi and up)• Minimum Sealing Pressure (softer seats needed when under 25 psi)
• Valve Materials (Ductile or Cast Iron, St. Stl)• Accessories (check valve, back flush, flow regulators, etc.)
• Service (Wastewater or Clean Water)
![Page 49: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/49.jpg)
Air/Vac ValvesAir/Vac Valves
• Similar to Air Release Valves
• Inlet/Outlet sizes (1” to 20”)
• Type of Connections (NPT and Flanged)
• Maximum Working Pressure (150 to 300 psi)
![Page 50: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/50.jpg)
Combination Air ValvesCombination Air Valves
• All of the above
• Body Configuration (Single versus Dual)Dual Body Single Body
![Page 51: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/51.jpg)
Installation and O&MInstallation and O&M
![Page 52: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/52.jpg)
InstallationInstallation
• Connections– Inlet piping and isolation valve should be same size as valve inlet
– Short Inlet Piping and Vent Lines
![Page 53: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/53.jpg)
InstallationInstallation
• Location–Need protection from freezing, contamination, flooding, and vandalism
–Needs access
–Watch valve clearances
![Page 54: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/54.jpg)
Operation and MaintenanceOperation and Maintenance
• Inspections and Flushing–At least annually–More often for valves that operate continuously
–Watch for external leakage
![Page 55: Air Valve Basic Training - Home - Ohio Water Environment ... - Air Valve Basic Training 05-03-2010a.pdf · Air Valve Basic Training ... Negative Pressure ValvePressure Air Release](https://reader035.vdocuments.mx/reader035/viewer/2022062311/5a788edb7f8b9a7b698cc186/html5/thumbnails/55.jpg)
QUESTIONSQUESTIONS
Dan Barr, PE Dan Barr, PE –– [email protected]@burnip.com(614) 459(614) 459‐‐20502050