-
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...
- toilets,
while avoiding overflow and (in the
event of low
water pressure)
backflow. The
modern ball**** was
invented by José
Antonio de
Alzate y Ramírez,...
- the
heart or
between heart chambers. It is the
circulatory equivalent of
backflow in
engineered systems. It is
sometimes called reflux. The
various types...
-
atrium to the
right ventricle during diastole, and to
close to
prevent backflow (regurgitation) from the
right ventricle into the
right atrium during right...
- hose spigots, hosebibbs, and wall
hydrants to have a
vacuum breaker or
backflow preventer, so that
water cannot return through the
spigot from the hose...
- 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...
-
blood is
maintained by one-way (unidirectional)
venous valves to
prevent backflow. In the
lower limbs this is also
aided by
muscle pumps, also
known as venous...
