Vent-Tech Model SWG
A Leader in Cylindrical Body, Flat Float Technology
The Vent-Tech Model SWG Sewer Valve combines over 13 years of hands-on engineering with patented flow designs that improve and expand on traditional flat float air/vacuum valve technology. Engineered for high-performance wastewater systems, the SWG delivers superior air flow, low-pressure sealing, and long-term protection against surge, vacuum collapse, and column separation.
Designed for the most demanding sewer environments, this valve offers proven durability, corrosion resistance, and operational efficiency—making it a trusted choice for municipalities, engineers, and contractors who require reliability without compromise.
- Improved air flow optimized for seamless pipeline operations
- Enhanced wear resistance for demanding sewer environments
- Proven sealing performance at 3 psi and above
- Low maintenance stainless steel construction ensures longevity and reduced upkeep
- Pipeline protection prevents collapse from vacuum and ensures column separation
- Surge protection mitigates water hammer and pressure surges
- Maximized pipeline capacity enhances overall system performance
- Best-in-class design trusted by top civil engineering firms
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Vent-Tech Valve Series Configurations
SERIES-C Combination Air Valves
Note to Engineer
Shall be four (4) function valves designed to:
- Exhaust large quantities of air at start-up during the filling of a pipeline system.
- Prevent the development of hydraulic transients (surge control) during start-up and pressure surges and shall operate automatically.
- Release accumulated air in a pipeline system while the system is operational and under pressure.
- Open and admit large quantities of air into the pipeline system during draining or if negative pipeline pressure occurs.
SERIES-B Biased Combination Air Valves
Note to Engineer
Shall be four (4) function valves designed to:
- Exhaust controlled quantities of air at start-up during the filling of a pipeline system.
- Prevent the development of hydraulic transients (surge control) during start-up and pressure surges and shall operate automatically.
- Release accumulated air in a pipeline system while the system is operational and under pressure.
- Open and admit large quantities of air into the pipeline system during draining or if negative pipeline pressure occurs.
SERIES-V Vacuum-Restrictive Air Valves:
Note to Engineer
Shall be four (4) function valves designed to:
- Exhaust large quantities of air at start-up during the filling of a pipeline system.
- Prevent the development of hydraulic transients (surge control) during start-up and pressure surges and shall operate automatically.
- Release accumulated air in a pipeline system while the system is operational and under pressure.
- Restrict the admittance of air back into the pipeline.
SERIES-N Vacuum Relief Valves:
Note to Engineer
Shall be single (1) function valves designed to:
- Open and admit large quantities of air into the pipeline system during draining or if negative pipeline pressure occurs.
SERIES-A Deep Well Air Valves:
Note to Engineer
Shall be three (3) function valves designed to:
- Exhaust controlled quantities of air at start-up during the filling of a pipeline system.
- Prevent the development of hydraulic transients (surge control) during start-up and pressure surges and shall operate automatically.
- Open and admit large quantities of air into the pipeline system during draining or if negative pipeline pressure occurs.
