Combination Air/Vacuum Valve with Surge Check
Combination air valves with surge check are designed to perform the same function as air/vacuum valves with surge check. But, in addition, they will automatically release small air pockets of air from the pipeline while under pressure, like an air release valve.
Features
- Pressure & Vacuum Relief in a piping
 - Prevent Water Hammer & Vortex Phenomena
 - Large capacity Venting & Vacuum relief for piping protection
 - Drain small air pocket from piping
 - Increase efficiency of water transport in a piping
 - Prevent overflowing
 - Easily cleaning the inside of air valve
 
Specification
| Large Orifice | 1/2inch (13mm) ~ 30inch (750mm) | 
| Small Orifice | 1/16inch (1.6mm) ~ 1inch (25mm) | 
| Flange | ANSI 1/2inch (13mm) ~ 30inch (750mm) | 
| Material | WCB, Stainless Steel, Ni-Al-Bronze, Duplex, Hastelloy, Incoloy series | 
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