Do bottle traps need an air vent?

[ade]

Hi everyone,

I am planning to renovate my small en-suite and to replace the current standard basin with a counter basin.
I have some doubts regarding the trap, I didn't have the chance to remove the basin yet (it's full of sealant) but from what I can see from the camera of my phone, current trap is looking similar to this one:

I am no expert so I am here asking your help 🙂
Can I remove all of that, put a pipe inside the wall, attach it to the main pipe below the floor as it is now and then attach to it a simple bottle trap like the one in the image below?

Do I need anything else like an air vent?

Also, does anyone have experience with the self closing waste valve called WV-1 from McAlpine? It seems interesting as it's just few cm high and might look well under the counter basin.

Many thanks in advance!

 

[king of pipes]

It really depends on how your drainage system is installed does it run to a soil stack which is vented to atmosphere ? A few pictures may help us . Kop

 

[ade]

It really depends on how your drainage system is installed does it run to a soil stack which is vented to atmosphere ? A few pictures may help us . Kop

Hi Kop, thanks for your reply!

As far as I can see, both the shower and the basin have a pipe that merges then with the WC waste pipe, attached is a picture of the external waste pipe, the en-suite is located on the first floor so the pipe you see in the middle is the one I am referring to

 

[exedon2]

The Mcalpine trap you mention is a waterless type trap which also acts as a air admittance valve if required
Really can't go wrong with that.

 

[king of pipes]

You should be fine without one on that soil stack 😉

 

[ade]

Many thanks you both!