UD LARISSA TECHNOLOGY

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COMBINATION AIR RELEASE & VACUUM BREAKER VALVE
COMBINATION AIR RELEASE & VACUUM BREAKER VALVE
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Last Updated
17 Jan 2019
Country Origin
Korea South
Minimum Order
1 Unit

Specification of

COMBINATION AIR RELEASE & VACUUM BREAKER VALVE
Model : CAV-D Type and CAV-S Type
Merk : Prosave
Origin : Korea

## General Description :
Combination air valves are normally installed at high points where air would 
naturally rise ahead of the incoming liquid during filling and collect during 
operation and/or where negative pressure first occurs during draining.
The large (air & vacuum) and the small (air release) orifices are both open 
during filling with the majority of the air is passes through the large orifice.
The rate at which air is discharged is a function of the differential pressure 
across the air & vacuum valve.
During filling, incoming water compresses the air in the “empty” pipe until 
the pressure differential across the air valve is sufficient that air is discharged 
at the same volumetric rate as water is entering the pipe.
After all the air has been purged, liquid enters the valve and lifts the floats 
and closes both orifices.
While the large orifice remains closed, the small orifice reopens as necessary 
to release any air that collects in the valve after it has closed. Should the internal 
pressure fall below atmospheric, both orifices open to allow air to flow through 
the valve into the system at the same volumetric rate at which the liquid is 
draining thus avoiding critical vacuum and damage to the pipe.

## Benefits :
* Pressure & Vacuum Relief Function
* Anti-Surge & Anti-Shocks
* Surge and Waterhammer Protection
* Liquid Overflow Protection
* Provides High Capacity Venting For Pipeline Protection
* Increasing Of Pump Efficiency
* Less System Energy
* Maintenance Free
* Release Small Pockets Under Operation Pressure


# Industrial Valve

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