Washing Machine waste - options for a pipe at height?

[low_and_there]

Hi folks, looking for some possible solutions for a slightly unfortunate waste pipe positioning. Basically, It's at about 80cm about the ground (where the WM is placed), and the plumber who installed it said he'd put a spigot on the end for the WM to empty to. There is no possibility to change that particular positioning. I thought they needed a standpipe but he assured me that a spigot was fine. That plumber is no longer around but the new one has said he thinks using a spigot risks backfilling and smells entering the WM and suggests putting a standpipe on the end with a trap. But the standpipe could only be 200mm - otherwise there's a risk that the WM may not be able to pump enough out (as it would be too high).

 

I've drawn a picture of the layout of the pipes - there's air admitted to the pipework about 1m ish away (not sure what it's called but it's something that allows overflow from the heating system) from the entry from the WM and there's an AAV a couple more metres away - would this provide enough air in to prevent backfilling and smells or do you think the new plumber is right and better to risk a short standpipe?

 

I'm worried that a short standpipe may result in flooding...

 

Thanks in advance

 

 

[Temp]

Could you fit a trap to the right of the "fixed" section?

 

I'm not sure of the rules on tun dishes but ask your plumber if it can be to the right of the tun dish for the heating. If so that would stop smells getting in via the tun dish as well.

[ProDave]

Can we have a picture and the full story?

 

Otherwise why can't the "this part is fixed" be unfixed and put in a better place to do the job properly?  i.e. is that also connecting to something else?