. The Check Valve prevents water from your CPAP from damaging your CPAP electronics.This kit is suitable for all SoClean machines with "SC1200" in the serial number. The filter and check valve should be replaced every six months.
SoClean Air Purifier | CVS The Next Generation of Air Purification This air purifier is up to 3, 000 times more effective than HEPA standards, eliminating up to 99.9999% of allergens, viruses, bacteria, mold, and dust* before you breathe them in.