Register

NCCER Level 4 Practice Exam

Access More Questions
In an oil interceptor, which component is used to collect grease that floats on the surface?
Correct Answer:
Skimming Wheel
Explanation:
Oil and grease float on top, so the device that actually gathers that surface film is a skimming wheel. It sits at the top of the interceptor and makes contact with the floating layer, pushing the grease into a collection area or bucket while the cleaner water beneath continues to flow out. The other parts do different jobs: a baffle slows and directs flow to aid separation, a dip tube draws water from below the grease layer to the outlet to minimize carryover, and the outlet valve controls discharge. So the skimming wheel is the element that actively collects the surface grease.

Access more questions from this quiz

Continue to NCCER Level 4 Practice Exam for more practice questions and the full quiz experience.

Access More Questions