Plumbing Trap Seal Size: Why Does It Matter?
What is the size of the trap seal in plumbing and why is it important?
A) Top of the trap and the vent connection.
B) Bottom of the trap and the drain pipe.
C) Crown weir and the trap outlet.
D) Trap inlet and the vent connection.
Answer:
The size of the trap seal in plumbing is the vertical distance between the crown weir and the trap outlet.
Explanation: The seal prevents sewer gases from entering a building by maintaining a certain level of water as a barrier. The size matters as too shallow can lead to quick evaporation and deep can cause slow drainage. So, the correct answer is C) Crown weir and the trap outlet.
In plumbing, the size of the trap seal is the vertical distance between the weir, which is the top of the water seal inside the trap, and the top of the dip of the trap. The purpose of this trap seal is to prevent sewer gases from entering the building. The water held in the trap acts as a barrier for these gases. The size of the seal is important because if it's too shallow, water can evaporate quickly, while if it's too deep, it can cause slow drainage.