GA Figure 980-D:

Combination Air Valve for Water, Dual Chamber with Surge Check

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

GA Industries Figure 980-D Combination Air Valve consists of a Figure 960-D Combination Air Valve and a Figure F284-D Surge Check factory installed on its inlet.The valve vents air from pipelines and systems as they are being filled with water and then close tight once the system is full and pressurized. The valve also releases air that accumulates in the valve while the system is operational. And, it automatically opens to admit air to limit vacuum formation when the pipeline or system is drained and/or a negative pressure occurs in the valve.

Plus, the surge check's “slow closing” adjustable regulated exhaust feature minimizes surges, shock and valve damage caused by sudden air valve closure due to column separation/rejoining.

Figure 980 Combination Air Valves are typically installed at high points in the system where air naturally rises during filling and in operation and vacuum first forms during draining.

Characteristics
  • Full port orifice for maximum air outflow and inflow
  • Air valve utilizes “kinetic” operating principle, designed not to blow shut
  • Rugged iron body and cover
  • Corrosion resistant Type 316SS trim
  • Tight sealing and easily replaceable rubber seats
  • Flanged inlet with flanged outlet or cowl
Material
  • Body & Cover: Cast Iron, ASTM A126 Class B
  • Floats: Stainless Steel, Type 316
  • Internal Linkage: Stainless Steel, Type 316
  • Surge check Plug & Seat: Lead-free bronze
  • Replaceable Seats: Buna-N
  • External Fasteners: Zinc Plated Steel
Corrosion Protection
  • Standard: Uncoated internal, external coated with enamel primer, minimum 2 mil DFT
  • Optional: 316 SS external fasteners and Internal/external NSF-61 certified 2-part epoxy, minimum 6 mil DFT.
Downloads
Product Bulletin
Air Valve Bulletin VAG16 LR
View
Technical Datasheet
Air Valve Sizing For Pipeline Filling and Draining
View
Figure 980 Data Sheet 980-01E
View
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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 980-D:
Combination Air Valve for Water, Dual Chamber with Surge Check
GA Figure 980-D Image
Size: 6" to 12"
Valve Type: Air Valve
Fluid: Water

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