TEXAS IRRIGATION EXAMS SCRIPT 2025/2026 QUESTIONS
AND ANSWERS RATED A+
✔✔max flowrate for 1 in pipe (to stay below 5 fps) - ✔✔15 gpm
✔✔max flowrate 1 1/4 in. pipe (to stay below 5 fps) - ✔✔25 gpm
✔✔max flowrate for 1 1/2 in pipe (to stay below 5 fps) - ✔✔35 gpm
✔✔Key requirement for RPZ backflow - ✔✔minimum of 12" above grade
✔✔Key requirement for Double Check backflow (DCVA) - ✔✔Test cocks must be
plugged with non-ferrous (non-magnetic) material
✔✔Key requirements for PVB and SVB - ✔✔Must be 12" above highest head, valve,
pipe, fitting, or fixture
✔✔Key requirements for Air Gap - ✔✔The recieving pipe must be 1" wider or 2 times
bigger than the discharge pipe
✔✔zone flow - ✔✔how many gallons go through a zone
✔✔Backflow Prevention Assembly - ✔✔Any assembly used to prevent backflow into a
potable water system. The type of assembly used is based on the existing or potential
degree of health hazard and backflow condition.
✔✔booster pump - ✔✔increases operating pressure
✔✔Bushing - ✔✔The method of adapting a fitting to either a larger or smaller size.
✔✔Check Valve - ✔✔A valve that allows flow in one direction but prevents flow in the
opposite direction.
✔✔Completion of irrigation system - ✔✔All standards are met and the irrigator is
satisfied
✔✔Class Pipe - ✔✔Class = How many pounds of pressure it can withstand before the
pipe bursts
✔✔Consulting - ✔✔Can't do it ass a tech
✔✔Control Wires - ✔✔The wires that transmit the signals to open and close from the
automatic controller to the automatic electric valves.
AND ANSWERS RATED A+
✔✔max flowrate for 1 in pipe (to stay below 5 fps) - ✔✔15 gpm
✔✔max flowrate 1 1/4 in. pipe (to stay below 5 fps) - ✔✔25 gpm
✔✔max flowrate for 1 1/2 in pipe (to stay below 5 fps) - ✔✔35 gpm
✔✔Key requirement for RPZ backflow - ✔✔minimum of 12" above grade
✔✔Key requirement for Double Check backflow (DCVA) - ✔✔Test cocks must be
plugged with non-ferrous (non-magnetic) material
✔✔Key requirements for PVB and SVB - ✔✔Must be 12" above highest head, valve,
pipe, fitting, or fixture
✔✔Key requirements for Air Gap - ✔✔The recieving pipe must be 1" wider or 2 times
bigger than the discharge pipe
✔✔zone flow - ✔✔how many gallons go through a zone
✔✔Backflow Prevention Assembly - ✔✔Any assembly used to prevent backflow into a
potable water system. The type of assembly used is based on the existing or potential
degree of health hazard and backflow condition.
✔✔booster pump - ✔✔increases operating pressure
✔✔Bushing - ✔✔The method of adapting a fitting to either a larger or smaller size.
✔✔Check Valve - ✔✔A valve that allows flow in one direction but prevents flow in the
opposite direction.
✔✔Completion of irrigation system - ✔✔All standards are met and the irrigator is
satisfied
✔✔Class Pipe - ✔✔Class = How many pounds of pressure it can withstand before the
pipe bursts
✔✔Consulting - ✔✔Can't do it ass a tech
✔✔Control Wires - ✔✔The wires that transmit the signals to open and close from the
automatic controller to the automatic electric valves.
