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Field glossary

Trap seal

The standing column of water held in a trap that blocks sewer gas from the building, measured in inches of depth

Used across 6 Anvilfield field guides, most in Plumbing.

Also defined as

  • The plug of water held in a fixture trap, commonly about 2 in deep, that blocks sewer gas from the room
  • The plug of water in a trap bend, commonly 2 in to 4 in deep, that blocks sewer gas from the room

Where this shows up

PlumbingTrap primer field guidePlumbingSewer gas odor field guidePlumbingPlumbing traps and trap seal guidePlumbingAAV and island vent guidePlumbingFloor and trench drain installation guidePlumbingDWV venting and pipe sizing guide

Related terms

AAVTrap primerTrap armWeirAHJBackwater valveCleanoutDeveloped length

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