Heimlich valve is used for drainage of
The Heimlich valve(flutter valve)is a small one-way valve used for chest drainage that empties into a flexible collection device & prevents return of gases or fluids into the pleural space.The heimlich valve is less than 13 cm long and facilitates patient ambulation. Reference:SRB's manual of surgery,5th edition,page no:1116.
Pneumothorax
Hemothorax
Emphyema
Malignant plural effusion
Cardio thoracic surgery  