• Can be used as an individual, branch, circuit or stack vent
  • Will vent up to 500 DFUs on a stack
  • Fits 3" and 4" pipe sizes
  • Expands architectural design limits
  • Reduces the number of fire-stopping applications
  • Exclusive vermin protection system
  • Limited lifetime warranty for replacement of defective valves
  • Residential or Commercial Use
  • ANSI/ASSE 1051, ANSI/ASSE 1050, NSF 14, ETL
  • California Residents: WARNING –

The unique design of the STUDOR® MAXI-VENT® provides plumbing ventilation to prevent the loss of water seals in traps without the need for costly roof penetration and vent piping.

Product Description Product Code # Units/Case Lbs./Case
4″ Push-Fit Rubber Connector 20342 6 6
4″ Push-Fit Rubber Connector 20302 24 24


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