Simplify drainage and waste venting with the air admittance valve designed specifically for chemical waste systems.

The unique design of the STUDOR® CHEM-VENT™ provides plumbing ventilation to prevent the loss of water seals in traps within chemical waste systems.

  • Can be installed in chemical waste systems when the system is designed by a design professional
  • WARNING!! STUDOR CHEM-VENT cannot be installed in applications where vented fumes are required to pass through biological and/or chemical filters before being released to the atmosphere.
  • Will vent up to 6 DFUs
  • Exclusive vermin protection system
  • Expands architectural design limits
  • Manufactured from Flame Retardant Polypropylene conforming to ASTM D-4101
  • The Sch 40 dimensions of the valve tail piece allows direct mounting on any fusion or MJ fitting
  • Through the use of readily available adapters, the valve can also be conected to CPVC, glass and Duriron® systems (designer to check for chemical comparability)
  • Limited lifetime warranty for replacement of defective valves
  • Commercial Use
  • NSF 14, (In Revision) ASSE 1049 Performance requirements for individual and branch type AAV’s for Chemical Drainage Systems
  • California Residents:


  Product Description Product Code # Units/Case Lbs./Case
  CHEM-VENT 20345 12 5

* REDI-VENT® Adapter is specially designed for use in DU-All washer box


For general planning and installation, we recommend the use of the information contained on the specification sheet for the Chem-Vent. The information is based on national standards, plumbing codes and the Hunter curve.

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