Materials & Properties
This alloy is made of copper and zinc.
What is brass?
The standard thread used on pipes and fittings.
What is NPT?
This wrench is used to tighten flat-edged fittings.
What is a spud wrench?
DWV stands for this system.
What is Drain, Waste, and Vent?
LOTO refers to this safety procedure.
What is lock-out/tag-out?
Stainless steel is made from steel, chromium, and this common metal
What is nickel?
The schedule number of a pipe indicates this feature.
What is wall thickness?
Tool used to center a vertical pipe under a sleeve.
What is a plumb bob?
A trap prevents this from entering a building.
What are sewer gases?
Water treatment device drains must not be directly connected to a sanitary system; instead, code requires this type of separation.
What is an indirect connection (air gap)?
The property that allows metal to be drawn into a wire.
What is ductility?
A coupling with bolts running parallel to the pipe.
What is a dresser coupling?
The safe hand reamer for use with a power vise.
What is a ratchet reamer?
Backflow is defined as this condition.
What is reversal of flow?
A pressure vacuum breaker (PVB) protects against backflow caused by this specific condition only.
What is backsiphonage (negative pressure)?
The property that allows a metal to be rolled into sheets.
What is malleability?
Pipe dope is mainly applied for this reason.
What is to lubricate and seal the joint?
Device used to hold pipe in a power vise.
What is a pipe clamp?
The device used to prevent backflow due to pressure or siphonage.
What is a backflow preventer?
or a reduced pressure backflow assembly (RPBA) to operate correctly, the relief valve must maintain at least this minimum pressure differential.
What is 2 psi (or approximately 2 psid)?
This non‑ferrous metal is commonly used and not iron-based.
What is tin?
The type of thread found on pipes is this.
What is a male taper thread?
RPM ratings for abrasive discs should be this relative to tool speed.
What is matched to the tool speed?
This type of system carries both storm and sanitary sewage.
What is a combined sewer?
In multi-storey buildings, a vent stack or yoke vent is required when a soil or waste stack exceeds this number of storeys.
What is more than 10–11 storeys (typically 11 storeys)?