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Frequently Asked Questions
What makes a bottle trap different?
The seal sits in a chamber, not a bend.
With a cup that unscrews from below.
So the trap opens in the hand.
No tools and nothing to dismantle.
That is most of its appeal.
Why is it used on show?
Because it is compact and symmetrical.
And made in finishes to match tapware.
A pedestal or wall-hung basin exposes it.
So does a vanity with an open shelf.
A tubular trap looks like plumbing.
What does it cost in performance?
Flow, noticeably.
The path turns twice through a chamber.
Rather than following a smooth bend.
So it discharges more slowly.
At the same nominal size.
Where should one not be used?
Anywhere with real flow.
A bath, a shower, a filled sink.
It will drain sluggishly for no obvious reason.
Use a tubular trap there.
The restriction is the whole problem.
Is it suitable for a kitchen sink?
Not really, for a second reason.
The chamber is where solids settle.
Grease and food waste accumulate in it.
A tubular trap scours itself instead.
Keep bottle traps for basins.