S-020 HC VB S-022 HC VB | Automatic Air Release Valve
Description
The S-020/2 HC VB automatic air release component releases accumulated air (gas) from the system while it is operating under pressure. The vacuum breaker component is designed to automatically admit large volumes of air during the draining of a pipeline or piping system. This valve will open to relieve negative pressures whenever water column separation occurs.
The presence of air (gas) in the system can reduce the effective cross sectional flow area, resulting in increased pressure loss and decreased flow. Unwanted air (gas) may also cause water hammer and metering inaccuracies, while hastening corrosion.
The S-020/2 HC VB automatic air release valve and vacuum breaker builds an air (gas) pocket inside the valve body, separating the liquid with its solid particles from the sealing mechanism, ensuring a leak-free seal.
Main Features
- Working pressure range:
- S-020 HC 0.2-16 bar
- S-022 HC 0.2-25 bar
- Testing Pressure: 1.5 times the 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.
- The unique design of the valve prevents contact between the liquid and the sealing mechanism by creating an air gap at the top of the valve. These features are achieved by:
- The conical body shape: designed to maintain the maximum distance between the liquid and the sealing mechanism and still obtain minimum body length.
- Independent spring-guided linkage between the float/rod assembly and the sealing mechanism: allows free movement of the float and rod. Vibrations and movement of the float due to turbulence will not unseal the sealing mechanism.
- Funnel-shaped lower body: designed to ensure that residue solid matter will fall back into the system and be carried away by the main pipe.
- Rolling seal: provides smooth positive opening, closing, and leak-free sealing over a wide range of pressure differentials.
- Internal metal parts: made of corrosion resistant stainless steel.
- Threaded discharge outlet enables connection of a vent pipe.
- The ball valve can be opened to release trapped pressure and drain the valve body prior to maintenance and for back-flushing during maintenance.
Valve Selection
- Size range: 2”– 4”.
- These valves are manufactured with flanged ends to meet any requested standard
- The 2”, 3" (16 bar, 25 bar) are also available with a BSP or NPT male threaded connection.
- Standard metal body, also available with a stainless steel body.
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.