Plumbing Systems and Fixtures

Which type of plumbing fixture is typically designed with accessibility standards in mind, such as wheelchair-accessible sinks?

Which type of backflow prevention device uses a physical separation between the potable water supply and the contaminated water source?

What is the primary purpose of backflow prevention devices in a plumbing system?

What is the primary function of a vent system in a plumbing system?

Which component of a drainage system is designed to trap wastewater and prevent sewer gases from entering the building?

What is the primary purpose of a relief vent in a vent system?

Which type of plumbing fixture is subject to water efficiency standards?

What is the primary purpose of a drainage system in a plumbing system?

Which type of backflow prevention device is typically used in high-hazard applications, such as hospitals and labs?

What is the primary purpose of material and construction standards for plumbing fixtures?

Plumbing Fixtures

Defined as devices that are connected to a plumbing system to perform a specific function (e.g. sinks, toilets, showers)
Requirements for plumbing fixtures vary by jurisdiction, but generally include:
- Water efficiency standards (e.g. low-flow toilets)
- Accessibility standards (e.g. wheelchair-accessible sinks)
- Material and construction standards (e.g. lead-free materials)

Backflow Prevention

Backflow occurs when contaminated water flows back into the potable water supply
Backflow prevention devices (BPDs) are required to prevent backflow
Types of BPDs:
- Air gaps
- Reduced pressure zone (RPZ) assemblies
- Double check valves
- Pressure vacuum breakers
BPDs must be installed, tested, and maintained in accordance with plumbing code requirements

Vent Systems

Vent systems provide a means for sewer gases to escape from the drainage system
Components of a vent system:
- Vent stacks
- Vent terminals
- Relief vents
Vent systems must be designed and installed to prevent siphonage and backpressure

Drainage Systems

Drainage systems collect and convey wastewater from plumbing fixtures to the sewer or septic system
Components of a drainage system:
- Drainpipes
- Fittings (e.g. elbows, tees)
- Traps (e.g. P-traps, S-traps)
- Cleanouts
Drainage systems must be designed and installed to prevent clogging and corrosion

Water Supply Systems

Water supply systems distribute potable water from the water source to plumbing fixtures
Components of a water supply system:
- Water service lines
- Meters
- Distribution pipes
- Fittings (e.g. valves, couplings)
Water supply systems must be designed and installed to prevent contamination and ensure adequate water pressure and flow rate

Test your knowledge of plumbing systems, including fixtures, backflow prevention, vent systems, drainage systems, and water supply systems. Learn about the components, requirements, and regulations for each system.