Do modern shower traps need a PTrap?

[fuel57]

Hi,
I'm currently replacing an old shower tray that has a P Trap directly underneath the old waste.
Can someone confirm whether modern shower wastes need a P Trap any longer or are they built in?
For example, I'm looking at the McAlpine ST range of shower wastes and it's listed as a trap:
https://mcalpineplumbing.com/traps/shower-traps-accessories/st90cp10-70c-90mm-shallow-shower-trap

Also from the Screwfix Q&A:
Is this a trap or do you have to fit a u bend further along the pipe Work?

There is no further U bend required.

https://www.screwfix.com/p/mcalpine-shower-trap-chrome-effect-90mm/45503

 

[terryplumb]

Shower needs a trap ,but not specifically a "P" trap.

 

[denso13]

Can someone confirm whether modern shower wastes need a P Trap any longer or are they built in?

The ones you linked to are traps, nothing else needed.

 

[fuel57]

Thanks for the confirmation guys.

Is there a recommended minimum distance between the shower trap and the first bend?

 

[denso13]

Is there a recommended minimum distance between the shower trap and the first bend?

No, anywhere is fine.

 

[fuel57]

Cheers