A part of the piping system other than a main, riser, or stack.
What is a branch
100
PVC
What is Polyvinyl chloride
100
Backflow due to an increased PRESSURE above the supply pressure, which may be due to pumps, boilers, gravity, or other sources of pressure.
What is backpressure backflow
100
A joint obtained by joining metal parts with alloys that melt at temperatures exceeding 1000 degrees but less than the melting temperature of the parts to be joined.
What is a Brazed Joint
200
Water at a temperature exceeding or equal to 120 degrees.
What is Hot Water
200
The vertical distance between the crown weir and the top dip of the trap.
What is trap seal
200
Two independent check valves and means for field testing
What is double check valve backflow prevention assembly
200
PEX
What is Cross-linked Polyethylene
300
Copper tube for water supply shall not have a weight less than this.
What is Type L
300
That portion of a fixture drain between a trap and the vent
What is trap arm
300
A device, assembly, or method to prevent backflow into the potable water system.
What is backflow preventer
300
Indicates a mandatory requirement
What is Shall
400
A water supply pipe for public or community use
What is a water main
400
Maximum fixture unit loading allowed on a 2" horizontal vent.
What is 24 Drainage fixture units
400
The flowing back of used, contaminated, or polluted water from a plumbing fixture or vessel into a water supply pipe due to pressure less than atmospheric in such pipe.
What is backsiphonage
400
Required hangar rod size for 6 inch diameter pipe and tube
What is 1/2 inch
500
A device designed to provide protection against hydraulic shock in the building water supply system.
What is A Water Hammer Arrester
500
A soil or waste system in which all piping is threaded pipe, or other such rigid construction, using recessed drainage fittings to correspond to the types of piping.
What is a Durham System
500
Two independently acting loaded check valves, a differential pressure relief valve, and a means of field testing.
What is Reduced Pressure Principle Backflow Prevention Assembly (RPZ)