GA Figure 930D, 930U:

Air & Vacuum Valve for Water, FLG x Cowl

Size: 6" to 12"
Valve Type: Air Valve
Fluid: Water

VAG GA Industries Figures 930-D and 930-U Air & Vacuum Valves efficiently vent air from pipelines and systems as they are being filled with water and then close tight once the system is full and pressurized.They automatically open to admit air to limit vacuum formation when the pipeline or system is drained and/or a negative pressure occurs in the valve.

Air & Vacuum Valves are typically installed at system high points where air naturally rises during filling and vacuum first forms during draining.Figures 930-D and 930-U only have one moving part and such simple construction ensures dependable, long term operation.

Figures 930-DC and 930-UC have outlet cowl while Figures 930-DJ and 930-UJ have a Class 125 flanged outlet.

  • Compact and light weight
  • Full port orifice for maximum air outflow and inflow
  • Utilizes “kinetic” operating principle, designed not to blow shut
  • Rugged iron body and cover
  • Corrosion resistant Type 316 stainless steel float
  • Tight sealing and easily replaceable rubber seat
  • Body & Cover: Cast Iron, ASTM A126 Class B
  • Float: Stainless Steel, Type 316
  • Replaceable Seat: Buna-N
  • External Fasteners: Steel, A307, Zinc Plated
Corrosion Protection
  • Standard: Uncoated internal, external coated with enamel primer, minimum 2 mil DFT
  • Optional: 316 SS external fasteners and internal and external NSF-61 certified 2-part epoxy, minimum 6 mil DFT
Drawings and Parts List
Figure 930 10in & 12in Drawing EAV7050W-B
Figure 930 6in & 8in Drawing EAV7049W-B
Installation, Maintenance and Operating Instructions
IOM Figure 930 10"-12" 120320
IOM Figure 930 6"-8" 120220
Product Bulletin
Air Valve Bulletin VAG16 LR
Sample Specification
Air Vacuum For Water Rev B
Technical Datasheet
Air Valve Sizing For Pipeline Filling and Draining
Figure 930 6 to 12in FLG Data Sheet 930.03C
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Clean Water

Dependable valves that meet your clean water needs

From the raw water intake to the filtration plant to the finished waster distribution and storage system, GA Industries valves have been providing dependable service in large and small water systems. GA Industries pump control, check and relief valves mitigate damaging pressure surges and eliminate slam and bang that can result from the operation of water pumps.

Our full range of pilot operated control valves regulate distribution system pressure and prevent overflow of storage tanks and reservoirs. Air trapped in water pipelines can reduce system efficiency and exacerbate pressure surges. Our wide range of automatic air valves ensures we have the right valve to maintain an air free system.

And when it’s necessary to isolate a pump, process or section of pipeline, you can depend on GA Industries butterfly valves for reliable flow shutoff.

GA Figure 930D, 930U:
Air & Vacuum Valve for Water, FLG x Cowl
GA Figure 930D, 930U Image
Size: 6" to 12"
Valve Type: Air Valve
Fluid: Water

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