Glossary Terms

May 3, 2017

VOCs

Volatile organic chemicals.
May 3, 2017

viscosity

The tendency of a fluid to resist flowing due to internal forces such as the attraction of the molecules for each other (cohesion) or the friction […]
May 3, 2017

virus

A parasitic infectious microbe, composed almost entirely of protein and nucleic acids, which can cause disease(s) in humans. Viruses can reproduce only within living cells. They […]
May 3, 2017

viable

Alive and capable of continued life
May 3, 2017

venturi

A tube with a narrow throat (a constriction) that increases the velocity and decreases the pressure of the liquid passing through it, creating a partial vacuum […]
May 3, 2017

valence

A whole number (positive or negative) representing the power of one element to combine with another. In general terms, the valence number represents the number of […]
May 3, 2017

vacuum breaker

A mechanical device which automatically vents a water line to the atmosphere when subjected to a partial vacuum, thus preventing back-flow. (See back-flow, air gap, back-flow […]
May 3, 2017

USPHS

United States Public Health Service. (www.usphs.gov)
May 3, 2017

USEPA

United States Environmental Protection Agency. (www.epa.gov)