Plumber Red Seal Certification

DWV system design including pipe sizing, slope requirements, fittings, cleanouts, and building drains.

Trap types, seal depths, venting methods, vent sizing, and preventing siphonage in plumbing systems.

Water supply systems including pipe materials, sizing, pressure, valves, and residential water service.

Backflow devices, air gaps, vacuum breakers, cross-connections, and protecting potable water supply.

Installing water closets, sinks, showers, and bathtubs including rough-in dimensions and fixture units.

Soldering copper, solvent cementing, PEX connections, threading, and essential plumbing tools.

Water heater types, T&P relief valves, anode rods, expansion tanks, and energy efficiency.

Grease traps, floor drains, trap primers, dielectric unions, and water hammer arrestors.

DWV testing methods, water supply pressure testing, final inspection, and commissioning procedures.