Aquatrol’s Series 88 and 89 are multi-purpose safety valves for steam, air or gas protection. They are designed for durability and are an economical choice for safety and relief applications. They are UV stamped, factory set and sealed. Choose from a variety of applications.


  • Adjustable tuned blowdown
  • Precision lapped metal-to-metal seating
  • Stainless steel springs
  • Ruggedly constructed
  • Closed seal hex cap or lever option
  • Wide variety of inlet and outlet options
  • Disk-guided seat provides quick, accurate and excellent reseating


  • Overpressure protection
  • Pressure vessels
  • Piping systems
  • Safety relief
  • Compressors and dryers
  • Vacuum relief
  • Pressure reducing stations
  • Intercoolers and aftercoolers
  • Pressured piping lines and tanks

Sizes: ¼” to 3”

Pressure and Temperature Limits:

  • Pressures to 250#
  • Temperatures to 406 degrees F°


  • Stainless steel whetted trimming (seat and disk)
  • Chrome plating
  • Oxygen cleaning
  • Female inlet
  • BSPT connections