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ECS Protector Stand Alone Nitrogen Generator

  • FM Approved per Approval Standard 1035 (models PGEN-40, PGEN-50, and PGEN-60)
  • UL 508A Listed (all models)
  • Designed specifically for dry pipe and pre-action fire sprinkler systems
  • Single system capacity varies based on paired air compressor
  • Up to 22,500 gallon cumulative capacity
  • For use under U.S. Patents 8,720,591, 9,144,700 and 9,186,533

The ECS Protector Nitrogen Generator System is available in four models: PGEN-30, PGEN-40, PGEN-50, and PGEN-60. The device is designed to replace oxygen, which causes corrosion, with nitrogen as the pressure maintenance gas in dry and pre-action fire sprinkler systems. The nitrogen generator installs between the air compressor/house air supply and the sprinkler system riser. The PGEN-30 model has a cumulative capacity of up to 3,200 gallons; the PGEN-40 model has a cumulative capacity of up to 10,000 gallons, the PGEN-50 model has a cumulative capacity of up to 18,500 gallons, and the PGEN-60 model has a cumulative capacity of up to 22,500 gallons.

Find out which Nitrogen Generator System is right for your project. Click here for our product selection guide.


  • Provides a reliable source of high capacity nitrogen pressure maintenance
  • Completely controls oxygen corrosion in both black steel and galvanized steel piping systems
  • Easy installation in-line between air supply and fire sprinkler systems
  • Simple to maintain with low maintenance costs- just annual filter cartridge replacement
  • Can be retrofitted to existing systems; existing compressed air systems can be used as a backup
  • Provides an unlimited supply of on-demand nitrogen – no nitrogen storage tanks required


  • Nitrogen generator produces constant stream of 98%+ nitrogen gas
  • Small footprint installs easily into most riser rooms
  • Built-in run timer to monitor usage and maintenance cycles
  • External piping features a manual by-pass valve for maintenance or “fast fill” needs
  • Meets the NFPA 13 30-minute fill requirement for dry pipe fire protection systems
  • Utilizes premium gas separation membrane rated for 20 years of continuous duty service

“Fill and Purge”

The engineers at ECS were the first to develop the “fill and purge” breathing process for the fire protection industry. The process requires the use of two components attached to a fire sprinkler system: (1) a nitrogen generator and (2) a venting device. This process facilitates Dry Pipe Nitrogen Inerting (DPNI) which removes virtually all oxygen (the primary cause of corrosion) from the fire sprinkler system piping. Once the concentration of nitrogen reaches 98% or greater the “fill and purge” process is complete and the nitrogen generator system will periodically provide supervisory nitrogen gas as needed. The continuous high concentration of nitrogen inside the fire sprinkler system will completely control corrosion.