An example of where backflow would harm the water supply is the use of well washing devices inside underground sewerage pumping stations.
42.
Lyons said the company installed a new sink and backflow guards, and added protective covers for the facility's dump drains.
43.
After the first affirmative speaker will " "'backflow "'" their partner who has just given a speech.
44.
The eight ( 8 ) named backflow assemblies ALL have two resilient seated isolation / shut off valves with properly located test ports.
45.
The presence or absence of backflow is going to be significantly influenced by the nature of the space you are blowing air into.
46.
In many countries . approved backflow prevention assemblies are required by law, and must be installed in accordance with plumbing or building codes.
47.
It should be noted that special accredited courses are given to test & repair backflow assemblies and only certified testers may test backflow assemblies.
48.
It should be noted that special accredited courses are given to test & repair backflow assemblies and only certified testers may test backflow assemblies.
49.
So by the action of papillary muscles on the atrioventricular valves, backflow of the blood from the ventricles into the atria is prevented.
50.
In the 1950s, the Natural Resources Conservation Service built Parkerville Dam and pump station on the lower Little Pudding to prevent backflow flooding.
