This type of air valve is the new generation design of combination air valve to compensate for the pipe-line design and application defects at air discharge criterion. It accomplishes 4 functions in a single chamber rather than the triple function in double chamber design, by limiting the air discharge during uncontrolled pipe-line filling. This valve application is for drinking water and neutral liquids applications.
DESIGN FEATURES
- Four Functions:
1. Discharge of air in high volume in the pipe-line to atmosphere during pipe filling. (Atmospheric Function)
2. Intake of air in high volume into the pipe line during pipe-line emptying. (Atmospheric Function)
3. Discharge of low volumes of air preventing them to accumulate and form “air-pockets” during pipe-line operation. (Pressurized Function)
4. Limiting of the air flow velocity during disharge when uncontrolled or high velocity pipeline filling. This causes an air-cushion in the pipe-line, lowering the approach velocity of water running, reducing the risk of induced impact (surge) on reduced speed arrival of water ( wetclosure) of the main float - Three orifices, and three floats
- No premature closure
- No moving parts are touching the internal coating.
- 100% watertight
- PP/PE float
- Safe for drinking water
