Hudson RCI -
With viral and bacterial filtration efficiencies of over 99.99% the Hudson 1605 Universal Inline CPAP Filter comes complete with holders as shown. Hudson's filter technology helps stop the viruses and bacteria that often plague sleep therapy users creating a clean, sterile environment for a healthy night's sleep.
A unique alternative to bulky water based humidifiers, HME Filters capture heat and moisture from your sleep therapy air and exhalations, preserving and increasing humidity to prevent your airways from drying out during CPAP therapy. These HME units include a special fine filter layer that provides bacterial viral filtration efficiencies of 99.99% ensuring you have clean, pure air to breathe and comfortable humidity levels too!
Philips Respironics -
This Pressure Valve is a spring-loaded valve that helps prevent the back flow of oxygen or water from a breathing tube back into a CPAP or BiPAP machine when the machine is turned off. Any back flow of oxygen or water passes out of the circuit through vents in the valve. When the CPAP machine is operating, the valve allows air to flow normally through the patient circuit; but when the pressure is eliminated the valve seals to prevent backflow.