The Market Leader in Zero Pressure Flat Float Valve Designs!

 
  • Improved Air-Flow
  • Enhanced Wear Resistance
  • Zero psi Minimum Sealing
  • Protect Pipeline From Collapse Due To Vacuum
  • Maximize The Capacity of the Pipeline
  • Surge Protection
  • Column Separation Protection
  • Durable, Reliable and Proven Design
  • Low Maintenance Stainless Steel Construction
  • Efficient, Effective and High Value - Best in Class!
  • Preferred Valve of Top Civil Engineering Firms

The Vent-Tech model SZG sewer valves are air release and vacuum break valves designed to provide surge protection and seal at zero hydraulic head (i.e. no reliance on a minimum pipeline pressure to achieve seal). If the HGL is expected to be consistently maintained above 3 psi then use a Model SWG valve, otherwise we recommend specifying the SZG.

Standard Series

Series C Series B Series V Series N

  • Exhaust Large Air at Start-up
  • Release Accumulated Air Under Pressure
  • Admit Large Air under Vacuum
  • Surge Control
  • Exhaust Small Air at Start-up
  • Release Accumulated Air Under Pressure
  • Admit Large Air under Vacuum
  • Exhaust Small Air at Start-up
  • Release Accumulated Air Under Pressure
  • Surge Control
  • Admit Large Air under Vacuum

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