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Texas Plumbing Tradesman Questions with 100% Correct Answers
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- Access cover Correct Answer A removable plate, usually secured by bolts or screws, to permit access to a pipe or pipe fitting for the purpose of inspection, repair or cleaning. 
 
Air Admittance Valve (AAV) Correct Answer One-way valve designed to allow air to enter the plumbing drainage system when negative pressure develops in the piping system. 
 
Air Break (Drainage System) Correct Answer An arrangement in which a discharge pipe from a fixture, appliance or device drains indirectly into a re...
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