GA Figure 25DXH:

Oil-Controlled Closing Swing Check Valve

Size: 3" to 24"
Valve Type: Check Valve
Fluid: Wastewater, Water

The GA Industries Figure 25-DXH is a tight seating, non-slam swing check valve with two-stage closure to minimize surges associated with pump shutdown.

The valve is designed to open smoothly on pump start providing full pipeline flow and minimal headoss.At pump shutdown, the counterweight immediately and rapidly drives the valve closed during the initial stage.The hydraulic system is then engaged at a pre-determined point which provides an adjustable final stage closing speed, allowing a controlled amount of reverse flow through the valve to minimize pump shutdown pressure surge.

  • Suitable for water or sewage
  • Resilient disc seat for tight shut off Non-slam operation with pump shutdown surge reduction
  • Rapid first stage closure, adjustable, controlled final closing speed
  • External and accessible hydraulic system
  • Factory assembled and tested
  • Body & Disc: Cast Iron, ASTM A126 Class B
  • Cover: Steel, ASTM A36 Body Seat: Stainless Steel, Type 316 Hinge Shaft: Stainless Steel, Type 303
  • Disc Seat: Thiokol Rubber External Fasteners: Zinc Plate Steel
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
Fig 25-DXH 3"-24" Drawing C1305-D
Sample Specification
25dxh Specification Rev B
Technical Datasheet
Figure 25DXH Data Sheet 25DXH-01B
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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.


Reliable wastewater valves designed for rigorous service

GA Industries sewage and wastewater valves are specially designed to accommodate the rigorous demands of the sewage collection, pumping and treatment process.

Whether a large regional sewage pump station, a small lift station or in-plant process pumping, GA Industries line of wastewater check, pump control and surge relief valves provide reliable service under difficult operating conditions. GA Industries ECO-Centric® plug valves handle solids and stringy material and are used in sewage and wastewater systems for pump, pipeline or process isolation.

Our full range of sewage and wastewater air valves automatically release air and sewage gas from forcemains to maintain pumping efficiency and minimize pipeline corrosion.

GA Figure 25DXH:
Oil-Controlled Closing Swing Check Valve
GA Figure 25DXH Image
Size: 3" to 24"
Valve Type: Check Valve
Fluid: Wastewater, Water

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