
Air vents & server cooling
ABV · ABVS Breathing valve
Vents air out, and lets air in when the line goes under vacuum.
Clears air that causes noise and upsets water-control systems, and breaks vacuum automatically. Install at the highest point, vertically.
Specifications
| Pressure | Max. 20 bar |
|---|---|
| Temperature | Max. 200 °C (stainless float) · 100 °C (PP float) |
| Sizes | ⅜″ – 1″ PT, NPT, PF |
| Media | Pure water, light oil |
| Materials | CF8M / CF8, brass cap |
Made and tested by Hopeet in Taiwan. Every valve is set and leak-tested before it ships, and its test report can be looked up by serial number.



