siphoning
- Thread starter Mikept
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rudytheplbr
36 Journeyman Plbr
Why venting is important
This reads to me that you need a relief vent between the fixture that is causing your problem, and the siphoned fixture. A vent will add air to your drainage system and prevent any other fixture traps from being siphoned.
Good Luck,
Rudy
This reads to me that you need a relief vent between the fixture that is causing your problem, and the siphoned fixture. A vent will add air to your drainage system and prevent any other fixture traps from being siphoned.
Good Luck,
Rudy
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as the water flows through the drain it creates a vacume effect that sucks the water out of the trap. This could happen immediatley with a large volume at once as when you flush a toilet, or gradually as a tub drains. So theoretically it could be either way.
I dont have a problem in my house, if I did I could probably test it and then asnwer my own question for one type of improper dwv'ing.
hj
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siphon
High flow can create a venturi vacuum, but when the water flow stops, the inertia of the final water can also create a low pressure area behind it. So you answer is either or both times can cause the problem. But those same conditions will make a drain flow faster if it does not have a vent.
High flow can create a venturi vacuum, but when the water flow stops, the inertia of the final water can also create a low pressure area behind it. So you answer is either or both times can cause the problem. But those same conditions will make a drain flow faster if it does not have a vent.
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