Check valves allow water to flow in only one direction, preventing backflow and ensuring system efficiency Historically, ...

The science pros at TKOR explain how to make a cheap and simple one-way check valve.

BRIDGETON, New Jersey (WPVI) -- A small device is having a big impact on the quality of life for some emphysema patients. We learn how these tiny one-way valves got a local woman back on her feet.

Endobronchial valve management has emerged as a minimally invasive intervention for the treatment of persistent air leaks and fistulas, conditions that are often associated with considerable morbidity ...