Five of the most recognized industrial valves are gate, globe, ball, butterfly, and check valves. They play different significance in the industrial field but with the same goal of controlling the ...

Ball valves are, perhaps, the most common design for on-off control. ... Matching valve to function is step one when selecting a valve. From there, other details need attention.

Patients with severe emphysema had lasting lung function improvement 5 years after bronchoscopic lung volume reduction with Zephyr Valves, according to a poster presented at the European ...

The Development of Prosthetic Heart Valves — Lessons in Form and Function Author : Elliot L. Chaikof , M.D., Ph.D. Author Info & Affiliations Published October 4, 2007 ...