A.R.I. D-26

The A.R.I. D-26 is a full-bore Combination Air Valve Series installed on wastewater transmission systems. It is designed to improve hydraulic operation by protecting the pipeline, increasing pipeline efficiency, and reducing energy requirements. The unique body shape of the valve enables a continuous air gap that separates the wastewater from the sealing mechanism, helping to avoid deposits or blockage. The valve is available in sizes DN50 - DN200 (2" - 8") with pressure ratings of PN10, PN16, and PN25. Working pressure ranges vary from 0.02 - 10 bar to 0.1 - 16 bar, depending on the model. The maximum working temperature is 60°C, with intermittent temperatures up to 90°C. Construction materials include Reinforced Nylon, Stainless Steel, Cast Steel, and Super Duplex. End connections are threaded BSP/NPT or flanged ends to meet various requested standards. Optional add-on components include One-way Out attachment, One-way In attachment, and Non-slam discharge-throttling attachment.