Assure DDF triangle-overlay


The DDF series is comprised of Final Patient Filters that help protect patients and their oxygen concentrators against sieve bed contamination.

Assure DFC Assure DDF
Patient filter in use.
Final patient filter.


  • Proprietary high-quality Microflex® borosilicate glass microfiber media
  • High-efficiency filtration, low pressure drop, and high moisture output 
  • Wide variety of connectors for easy installation
  • Customizable filters to fit special customer requirements
  • ISO 9001, ISO 13485, and FDA approved manufacturing facility
  • Rapid product development with STAR Labs support
  • Engineering, customization, testing, certification, and application support
  • Meets international FDA and ISO standards, 510(k) registered

functional description

The Disposable Disk Filter (DDF) series was developed to reliably remove all contaminants from the oxygen concentrator before vending the air to the patient. 

Certified according to the ISO 13485 quality management system for medical devices, Pentair also manufactures in accordance with the most stringent Food and Drug Administration (FDA) requirements. We test each and every filter rigorously to guarantee the highest quality in the industry.

what it does

DDF (Disposable Disk Filter) series  

The Disposable Disk Filter (DDF) Series of filters help remove all the bacterial and contamination from the oxygen concentrator before vending the air to the patient. These filters help protect the patient from concentrator sieve contamination and protect the concentrator from patient bacterial and viral transmission.



  • Oxygen concentrators
  • Ventilators



DDF/DFC Brochure

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Industrial DDF DFC