NEW NICHWELL NVD-4 2.8 cfm Corrosion-Resist Commercial Grade 2-Stage Vacuum Pump

Features

• • Adjustable gas ballast
  • Built-in oil back-flow prevention check valve
  • Internal forced oil cycling system
  • Integrated cylinder structure
  • Exhaust filter with easy-to-change replaceable filter element
  • Heavy duty structure and designed for reliable long time operation
  • Low noise
  • All necessary fittings and filter included for immediate use
  • Two-Shift adjustable gas ballast valve satisfies different requirements of condensable vapor(such as water vapor) to be exhausted out of pump in different processes.
  • Dual protection of oil anti-sucking back ensures vacuum system from oil pollution when pump stops running and needs to be easily restarted.
  • Forced oil circulation system consisted of oil  pump and constant pressure oil supply mechanism ensures stable running of the pump.
  • Less components are used, easy to maintain and repair.