Backflow is a term in plumbing for an unwanted flow of water in the reverse direction. It can be a serious health risk for the contamination of potable...

A backflow prevention device is used to protect potable water supplies from contamination or pollution due to backflow. In water distribution systems,...

The term Eurasian backflow, or Eurasian back-migrations, has been used to describe several pre-Neolithic and Neolithic migration events of humans from...

A reduced pressure zone device (RPZD, RPZ, or RPZ valve) is a type of backflow prevention device used to protect water supplies from contamination. RPZDs...

to allow blood flow and which then close together to seal and prevent backflow. The mitral valve has two cusps, whereas the others have three. There are...

the heart or between heart chambers. It is the circulatory equivalent of backflow in engineered systems. It is sometimes called reflux. The various types...

of the valve function thereby opening up the ureter to backflow. The main risk of such a backflow is the spreading of urinary tract infections up into the...

Reverse Promotional poster Also known as Backflow Flow Back Hangul 역류 Genre Family Melodrama Revenge Created by Choi Yong-won Written by Kim Ji-yeon Seo...

a clapper valve (if not designed into the hydrant already) to prevent backflow into the hydrant. Additionally, residents who wish to use the hydrant to...

incompetent and allows backflow from the pulmonary artery to the right ventricle of the heart during diastole. While a small amount of backflow may occur ordinarily...