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Plumbing 3

Plumbing 3 advances students’ readiness for the journeyman role by strengthening diagnostic, system-design, and service skills aligned with industry standards and code requirements. Students receive a plumbing codebook and complete focused exam preparation for the journeyman plumber test while reinforcing safe, professional work practices. This course is the third level in a three-level program.

 

Prerequisites: Plumbing 2 or Employer Approval

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A commercial plumbing pipe network
Course Details
  • Dates: Aug. 18, 2026 - May 11, 2027
  • Day of Week: Tuesday
  • Time: 4:30 - 8:30PM
  • Length: 2 Semesters
Credentials Earned
tuition & fees
Plumbing 3 Instructor
John Peer - WMCI Plumbing Instructor

John Peer

Parker-Arntz Plumbing & Heating

What you'll learn

Applied Math

Reviews math concepts, including weights and measures, area and volume, temperature, pressure, and force. Describes the six simple machines: inclined planes, levers, pulleys, wedges, screws, and wheels and axles.

Sizing and Protecting the Water Supply System

Teaches techniques for sizing water supply systems, including calculating system requirements and demand, developed lengths, and pressure drops. Reviews the factors that can reduce efficiency of water supply piping. Introduces different backflow prevention devices and explains how they work, where they are used, and how they are installed in water supply systems.

Potable Water Supply Treatment

Explains how to disinfect, filter, and soften water supply systems. Discusses how to troubleshoot water supply problems, flush out visible contaminants from a plumbing system, and disinfect a potable water plumbing system.

Types of Venting

Reviews the different types of vents that can be installed in a DWV system and explains how they work. Teaches design and installation techniques.

Sizing DWV and Storm Systems

Explains how to calculate drainage fixture units for waste systems. Reviews how to size drain, waste, and vent (DWV) systems; storm drainage systems; and roof storage and drainage systems.

Sewage Pumps and Sump Pumps

Discusses the installation, diagnosis, and repair of pumps, controls, and sumps in sewage and storm water removal systems.

Corrosive-Resistant Waste Piping

Discusses corrosive wastes and reviews related safety issues and hazard communications. Explains how to determine when corrosive-resistant waste piping needs to be installed, as well as how to correctly select and properly connect different types of piping.

Compressed Air

Explains the principles of compressed air systems and describes their components and accessories. Reviews installation and periodic servicing of air compressor systems.

Service Plumbing

Covers the troubleshooting and repair of fixtures, valves, and faucets in accordance with code and safety guidelines. Explains how to diagnose and repair water supply and drainage piping, water heaters, and other appliances and fixtures. Describes the effects of corrosion, freezing, and hard water on plumbing systems.

Plumbing 3 Registration

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Need to register more than 7 students? Please reach out to Jordyn Kapala for assistance.
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