Vent-Tech Model SDG
Compact Performance with Patented Design Features
The Vent-Tech Model SDG Sewer Valve is the most compact flat float valve in the Vent-Tech lineup, engineered for low-pressure sealing applications where vertical clearance is limited. Built on the foundation of the zero-pressure sealing SZG model, the SDG delivers the same trusted performance, with improved flow characteristics, reduced weight, and enhanced self-cleaning functionality.
Designed for maximum reliability in space-constrained installations, the SDG provides efficient air release, superior wear resistance, and robust protection against vacuum-related pipeline failures. When height is restricted and performance is non-negotiable, the SDG is the clear choice.
- Compact design for installations with restricted space
- Low pressure sealing ensures reliable operation at 1 PSI minimum
- Self-flushing design reduces buildup and maintenance
- Enhanced air flow for optimized pipeline efficiency
- Patented design features provide industry-leading performance
- Stainless steel construction ensures low maintenance and high reliability
- Surge protection safeguards against water hammer and pressure spikes
- Wear-resistant construction for long-term durability
- Pipeline protection prevents vacuum collapse and ensures column separation
- Best-in-class engineering 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.
