Use washing machine without waste trap

The fitting in your link is made from Polypropylene, that type of plastic will not solvent weld. Fit it into the top end of the waste valve if that's you preferred choice, otherwise I'd fit a standpipe and hook the drain hose into that. https://www.screwfix.com/p/floplast-washing-machine-trap-white-40mm/18640

Any pipework under the floor I would solvent weld, it's fit and forget, and no danger of a joint coming apart and/or leaking at a later date.
 
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Thanks for explaining the polypropylene bit. As discussed above, I don't have space for a standpipe.
I want to plumb the washing machine outlet directly into a welded spigot.

I would be grateful if somebody could recommend me one like I've posted above.

Thanks again
 
Is that a push fit or a solvent weld elbow sticking out of the floor? Looks like it might be push fit, if it is then that spigot adapter may just push in but either way it's not much better than you have at the moment.
 
Madrab said:
Is that a push fit or a solvent weld elbow sticking out of the floor? Looks like it might be push fit, if it is then that spigot adapter may just push in but either way it's not much better than you have at the moment.
Click to expand...

Yep.

This is what I want to go for:
I want to replace the Push Fit Elbow with a spigot as attached.

Can you please advise me what sort of spigot to go for. I'll check out some solvent welding videos and hook it up next weekend.

Thanks again

CF
 

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Actually I just realised that the current black waste pipe is probably polypropylene if it's being used in a push fit system (is this a fair assumption?) and so I'll have to use compression fitting anyway :S
 
My machine wouldn't work as in your diagram because the water would Syphon out but they may have changed the design since year 2000 when I bought my Bosch:)
 
Nope, you need to loop the drain hose up and back down to avoid the issue that @lostinthelight mentions if you don't then your machine could self syphon. To avoid that you'll need to loop the drain hose up at least half way up above the drum height of the machine. It should be clipped to the top of the machine anyway so just leave it like that.

If it's push fit pipe and you have an open pipe at the other end then replace the current black push fit elbow with a compression elbow and that spigot you linked to will fit into that. Still isn't correct tho.
 
Yeah thanks.
The loop wasnt included in the diagram for simplification purposes.

As per the diagram, Can I get rid of the elbow all together and connect the spigot in the horizontal position, connecting it directly to the horizontal drain pipe?
 
My previous suggestion of using the HEPvO trap but just replace the trap for a compression straight and use the same straight spigot (nozzle) adapter I pictured and you linked to.
Only trouble with that is that there is no backflow protection so if all the water didn't run away and there wasn't a perfect seal on the compression straight it could leak but this isn't an ideal approach anyway.
 
Madrab said:
My previous suggestion of using the HEPvO trap but just replace the trap for a compression straight and use the same straight spigot (nozzle) adapter I pictured and you linked to.
Only trouble with that is that there is no backflow protection so if all the water didn't run away and there wasn't a perfect seal on the compression straight it could leak but this isn't an ideal approach anyway.
Click to expand...

Yeah I understand your concern.
Im only suggesting this route because there is an air gap where I described in the diagram so I think the waste will happily flow through and I can't see how any obstructions can occur to cause backflow.

But I could be wrong :S

By connecting the flexible machine waste outlet to a sealed spigot, have I not effectively turned the 40mm waste pipe into a washing machine extension hose?
This will drain out into the open with the aid of the washing machine pump pressure. The washing machine manual does say it can pump that distance.

What do you think?
 
D

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