The SAT™ dynamic valves react to internal pressure within the air chamber, controlling the flow of air within the SAT™ system.

Self Adjusting Technology™ (SAT™) compensates for patient weight by allowing air to escape through the valve until it closes automatically, reducing internal air pressure and creating a softer cushion of air.

This is the same principle of immersion achieved when using powered airbeds and air mattresses.  Generally, the deeper a patient sinks into the surface, the lower the interface pressures on any given body site.  On an airbed, the air blower controls the amount of air in the mattress, i.e. the more air blown into the mattress, the firmer the mattress; the less air blown in, the softer the mattress.  Self Adjusting Technology™ doesn’t blow air into the mattress. Instead, it controls the amount of air released from the mattress.  The immersion effect and weight displacement works the same in both cases.  The key to SAT™ is this ratio of pressure to volume, not individual patient weight, so SAT™ works with patients of varying sizes and weights. It is possible to scientifically determine the pressure/volume ratio that will maximize immersion without bottoming out, and the same ratio will apply to a 100-pound or a 500-pound person.  The SAT™ valve is designed to control the pressure/volume ratio in our AtmosAir^® mattress. Click here for a more in-depth look at the SAT™ technology that drives our AtmosAir^® family of products.