Reveal the strengths or capabilities of (someone or something) by putting them under strain
the act of subjecting to experimental test in order to determine how well something works; "they agreed to end the testing of atomic weapons"
Give (someone) a short written or oral examination of their proficiency or knowledge
an examination of the characteristics of something; "there are laboratories for commercial testing"; "it involved testing thousands of children for smallpox"
Take measures to check the quality, performance, or reliability of (something), esp. before putting it into widespread use or practice
examination: the act of giving students or candidates a test (as by questions) to determine what they know or have learned
A membranous fold in a hollow organ or tubular structure, such as a blood vessel or the digestive tract, that maintains the flow of the contents in one direction by closing in response to any pressure from reverse flow
A device for controlling the passage of fluid through a pipe or duct, esp. an automatic device allowing movement in one direction only
device in a brass wind instrument for varying the length of the air column to alter the pitch of a tone
control consisting of a mechanical device for controlling the flow of a fluid
A cylindrical mechanism in a brass instrument that, when depressed or turned, admits air into different sections of tubing and so extends the range of available notes
a structure in a hollow organ (like the heart) with a flap to insure one-way flow of fluid through it
Restricted Parking Zone, a zone which limits parking to residents or patrons holding a city-issued permit. Often used to discourage hide-and-rides, where transit riders are using parking spaces typically reserved for other issues.
A Reduced Pressure Zone Device (RPZD, RPZ or RPZ valve) is a type of backflow prevention device used to protect water supplies from contamination. RPZD may also be known as reduced pressure principle backflow prevention devices, reduced pressure zone assemblies
PC110028
This valve in installed in a floor panel of a commercial building. Notice the corrosion from the warmth and moisture trapped in this small compartment.
Condensation sits on the valve year round.
PB050002
This valve does not have the proper air gap with the insulation wrapping the valve.