Pipe
This type of copper is good for underground service connection from the water main to the building
What is type K soft
This trap is prohibited because it will siphon the trap dry
What is an S trap
This is the minimum pressure in psi for a flush valve
What is 25psi
Overtightening the bolts on a toilet, this is the most likely result.
Cracking of the porcelain
When soldering a joint the solder starts balling on the surface rather then wicking into the joint
They joint was not cleaned or fluxed. Or the flux was burnt off due to overheating.
Hair over the weir of a p trap will cause this action to happen and drain the trap
What is capillary action
What is a "wet tap" in water service?
A connection to a water main while its still full of water and under pressure.
An anode rod in a water heater serves this purpose.
To be a sacrifice to protect the walls of the tank
This type of solder is required for potable water systems under the NPC
What is lead free
The primary function of a vent pipe in a DWV system?
To prevent positive and negative pressure differentials
This pressure is used as a standard test for residential potable water
100psi(700kpa)
A water softener regenerates too frequently and consumes excessive salt. What is the likely cause?
The regen cycle is set for too frequent intervals
This filler metal and technique is required for brazing medical gas lines
BAg-7 silver brazing allow and nitrogen purge.
What is the difference between a wet and a dry vent?
A dry vent is air only while a wet vent carries drainage and air.
What is the minimum size for the branch supply serving a single residential lav?
1/2"
How often should a UV disinfection lamp be replaced?
Every 12 months
After pressing a pro press joint the insertion mark is still visible outside the fitting. What does this indicate?
The pipe was not fully in before pressing.
This is the minimum size drain pipe for a water closet
3"
Whats the maximum delivery temp for a residential lav?
120F or 49C
What is the cause of a metallic taste in new copper supply water system?
New copper naturally releases copper ions into the water and this will go away.