Practice Test – 100 Questions

Take a full length practice exam of 100 randomly generated questions. Missed questions are reviewed at the end of the test.

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Distribution Question

Which valve is used to prevent a pipe from collapsing?
Needle valve
Ball valve
Vacuum relief valve
Gate valve
Question 1 Explanation: 
The relief valve is used to control or limit the pressure in a system or vessel which can build up by a process upset, instrument or equipment failure, or fire.

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In March 2014, 1,027 people took the Water Distribution Certification Exam in California. 47% failed!

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