A flutter valve (also known as the Heimlich valve after its inventor, Henry Heimlich) is a one-way valve used in…
Browsing: Frequently Asked Questions Concerning Flutter Valve
This should be done 2-4 times during the course of a day. If you take breathing treatments, the best time…
The use of a flutter valve for 30 min/d for at least 4 weeks is enough to change physical properties…