D-040 L | Combination Air Valve for Industry
Description
The D-040 L Combination Air Valve has the features of both an air release valve and an air & vacuum valve in a single body. This air valve is specifically designed to operate with liquids containing small solid particles.
The air release component is designed to automatically release small pockets of air to the atmosphere as they accumulate along a pipeline or piping system when it is full and operating under pressure.
The air & vacuum component is designed to automatically discharge or admit large volumes of air during the filling or draining of a pipeline or piping system. This air valve will open to relieve negative pressures whenever water column separation occurs.
The valve’s unique design enables the separation of the liquid from the sealing mechanism and assures optimum working conditions.
Main Features
- Working pressure range: 0.2-10 bar, 0.2-16 bar.
- Testing pressure: 1.5 times the maximum working pressure of the air valve.
- Maximum working temperature: 60°C.
- Maximum intermittent temperature: 90°C.
Note: For applications requiring a working temperature above the maximum stated or below 50 C., please consult first with the A.R.I. Applications Engineering Dept.
- Reliable operation reduces water hammer incidents.
- Dynamic design allows for high velocity air discharge while preventing premature closure.
- Lightweight, small dimensions, simple and reliable structure.
- The threaded drainage outlet enables the connection of a vent hose.
- The large size of the automatic air release orifice relative to the air valve body:
- Discharges air at high flow rates.
- Lessens the danger of its obstruction by debris.
- Enables the usage of the patented rolling seal mechanism, making it less sensitive to pressure differential than a direct float seal.
- The body is made of high-strength composite materials and all operating parts are made of specially selected, corrosion- resistant materials.
- Due to its light weight, the valve may be installed on plastic piping systems, as well as other lightweight piping systems.
Valve Selection
- Size range: 1/2”, 3/4”, 1”, 2" threaded male connections, NPT or BSPT.
- Connection size: 1/2, 3/4", 1", 2”.
Note
For best suitability, it is recommended to send the fluid chemical properties along with the valve request.
Upon ordering, please specify: model, size, working pressure, thread and flange standard and type of liquid.