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Trap versus "S" Bend



 
 
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  #1  
Old October 14th 05, 06:56 PM
Frank
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Default Trap versus "S" Bend

Can a bathroom sink have an S Bend as apposed to a waste trap?

Apart from preventing smells coming up the pipe, is the traps main function
to collect anything that gets dropped down the sink and if so then why does
a bath not have this?

Cheers

Frank.


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  #2  
Old October 14th 05, 08:23 PM
Set Square
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Default Trap versus "S" Bend

In an earlier contribution to this discussion,
Frank big@hole wrote:

Can a bathroom sink have an S Bend as apposed to a waste trap?

Apart from preventing smells coming up the pipe, is the traps main
function to collect anything that gets dropped down the sink and if
so then why does a bath not have this?

Cheers

Frank.


They both do the same job - provide a plug of water which prevents nasty
smells coming up to the sink/bath/basin/whatever from the sewer. A trap is
more compact, and takes up less horizontal space, in particular. Otherwise
it doesn't matter which you use. A lot of baths *do* have traps.

Modern plastic S-bends are often not very deep (their lead pre-decessors had
used to be a lot deeper). P-traps come in various depths. You sometimes need
a deep one if the waste pipe isn't adequately ventillated such that the
pressure can drop and suck the water out of the trap. Deeper traps offer
more resistance to this.
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Cheers,
Set Square
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  #3  
Old October 14th 05, 09:11 PM
Frank
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Default Trap versus "S" Bend


"Set Square" wrote in message
...
In an earlier contribution to this discussion,
Frank big@hole wrote:

Can a bathroom sink have an S Bend as apposed to a waste trap?

Apart from preventing smells coming up the pipe, is the traps main
function to collect anything that gets dropped down the sink and if
so then why does a bath not have this?

Cheers

Frank.


They both do the same job - provide a plug of water which prevents nasty
smells coming up to the sink/bath/basin/whatever from the sewer. A trap is
more compact, and takes up less horizontal space, in particular. Otherwise
it doesn't matter which you use. A lot of baths *do* have traps.

Modern plastic S-bends are often not very deep (their lead pre-decessors

had
used to be a lot deeper). P-traps come in various depths. You sometimes

need
a deep one if the waste pipe isn't adequately ventillated such that the
pressure can drop and suck the water out of the trap. Deeper traps offer
more resistance to this.


Thanks Set Square.


  #4  
Old October 14th 05, 11:54 PM
Chris Bacon
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Default Trap versus "S" Bend

Frank wrote:
Can a bathroom sink have an S Bend as apposed to a waste trap?


Of course not. There is no such thing as a bathroom sink.


Apart from preventing smells coming up the pipe, is the traps main function
to collect anything that gets dropped down the sink and if so then why does
a bath not have this?


It does.
  #5  
Old October 15th 05, 06:12 PM
Peter Taylor
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Default Trap versus "S" Bend


"Chris Bacon" wrote in message
...
Frank wrote:
Can a bathroom sink have an S Bend as apposed to a waste trap?


Of course not. There is no such thing as a bathroom sink.


Apart from preventing smells coming up the pipe, is the traps main
function
to collect anything that gets dropped down the sink and if so then why
does
a bath not have this?


It does.


I think what Frank means by "trap" is a Bottle Trap. An S bend is a trap as
well, Frank. So is a P trap. You can get S traps, P traps and bottle traps
in all diameters, 32mm for washbasins and bidets, 40mm for sinks, baths and
showers and 50mm, usually for Urinal bowls and large sinks. You can also
get shallow 40mm dia P traps for tight spaces under baths and showers. If
you want an S trap for a basin, you need one of these, in 32mm or 1"
diameter:

http://www.gwsupplies.co.uk/plumbing...o.php?item=867

The trap's function is to provide a water seal to prevent bad smells from
the sewers. Luckily, they all catch dropped jewellery too. This type can
be disassembled very easily to do that.

Peter

  #6  
Old October 17th 05, 07:28 PM
Pet @ www.gymratz.co.uk ;)
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Default Trap versus "S" Bend

Frank wrote:
Can a bathroom sink have an S Bend as apposed to a waste trap?


I recently found on both kitchen sink & wash basin, an S trap/bend makes
for very simplified connection to an off centre outlet/rising pipe. Both
for depth and left/right adjustments.

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