Texas Plumbing Tradesman Exam Questions & Answers

Texas Plumbing Tradesman Exam Questions & Answers Access cover - ANS ️️ 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) - ANS ️️ 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) - ANS ️️ An arrangement in which a discharge pipe from a fixture, appliance or device drains indirectly into a receptor below the flood-level rim of the receptor, and above the trap seal. air gap - ANS ️️ Indirect waste arrangement where the waste is discharged to the drainage system through piping that terminates at a specific distance above the flood level rim. ( 2 times the pipe size, never less than 1 inch) Area Drain - ANS ️️ A receptor designed to collect surface or storm water from an open area Backflow - ANS ️️ Unwanted reverse flow of contaminants through a cross- connection into a potable water system. It occurs when the pressure in the potable water supply drops below the pressure of the contaminated supply. Back siphonage - ANS ️️ backflow due to negative pressure Back water valve - ANS ️️ a device installed in a drainage system to prevent reverse flow .