10 Questions
Which type of plumbing fixture is typically designed with accessibility standards in mind, such as wheelchair-accessible sinks?
Sinks
Which type of backflow prevention device uses a physical separation between the potable water supply and the contaminated water source?
Air gap
What is the primary purpose of backflow prevention devices in a plumbing system?
To prevent contaminated water from entering the potable water supply
What is the primary function of a vent system in a plumbing system?
To provide a means for sewer gases to escape
Which component of a drainage system is designed to trap wastewater and prevent sewer gases from entering the building?
Trap
What is the primary purpose of a relief vent in a vent system?
To relieve excess pressure in the drainage system
Which type of plumbing fixture is subject to water efficiency standards?
All of the above
What is the primary purpose of a drainage system in a plumbing system?
To collect and convey wastewater
Which type of backflow prevention device is typically used in high-hazard applications, such as hospitals and labs?
Reduced pressure zone (RPZ) assembly
What is the primary purpose of material and construction standards for plumbing fixtures?
To ensure the use of safe and durable materials
Study Notes
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.
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