Plumber Red Seal · Question
Under the NPC, what is a primary requirement for a fixture to be classified as 'indirectly connected' to the drainage system?
An indirect connection prevents any potential backflow from the drainage system from contaminating fixtures used for food preparation or sterile procedures by d
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Question: Under the NPC, what is a primary requirement for a fixture to be classified as 'indirectly connected' to the drainage system?
Answer options:
- It must be made of stainless steel. ✅ It must discharge through an air gap to a trapped and vented receptor.
- It must have its own dedicated vent stack.
- It must be located in a non-residential building.
Correct answer: It must discharge through an air gap to a trapped and vented receptor.
Explanation: An indirect connection prevents any potential backflow from the drainage system from contaminating fixtures used for food preparation or sterile procedures by discharging through an air gap into a separate, properly trapped fixture.
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