Water Supply Systems Flashcards
6 cards from real 306A practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Water Supply Systems flashcards as text
What is the minimum hot water supply temperature at a residential fixture outlet according to Canadian plumbing standards?
Answer: 43°C
The minimum hot water temperature at a residential fixture outlet is 43°C (110°F) to ensure adequate hot water delivery while balancing scald prevention.
What is the minimum water pressure required at a fixture outlet for proper operation?
Answer: 140 kPa (20 psi)
A minimum of 140 kPa (20 psi) is required at the most remote fixture outlet to ensure adequate flow for proper fixture operation.
What is the maximum static water pressure permitted at a fixture outlet?
Answer: 552 kPa (80 psi)
The maximum static pressure at a fixture outlet is 552 kPa (80 psi). A pressure-reducing valve must be installed when the supply pressure exceeds this limit to protect fixtures and piping.
What type of valve must be installed on the water supply to each dwelling unit?
Answer: Gate valve or ball valve (full-port shutoff)
A full-port shutoff valve (gate or ball valve) is required at each dwelling unit supply so the water can be completely isolated for maintenance without affecting other units.
What is the purpose of a water hammer arrestor in a supply system?
Answer: To absorb the shock wave caused by sudden valve closure
Water hammer arrestors contain a sealed air chamber that absorbs the pressure surge (water hammer) created when valves close suddenly, protecting pipes and fittings from damage.
What is the minimum size of a water service pipe for a single-family dwelling?
Answer: ¾ inch
A ¾-inch water service pipe is the minimum size for a single-family dwelling, providing adequate flow for simultaneous fixture use.