Dishwasher fit - too much pipework?

Joy_12345

WIAWSNB said:

That looks spot on :-)

The plastic washer is there to prevent friction from the screw-on collar against the rubber washer. There should be one - are you certain it ain't there? If it's truly missing, then your options are to go back to SF, or just lube the rubber washer with washing-up liquid. 

As for height, What does the new pipe go up to from there? Don't cut it unless it's necessary.

Is there enough room for the hose to go in easily above it? If so, almost certainly it's good to go. 

Phew, thanks for confirming I don't need to start again!

The unstretchy washer is definitely not there. And the stretchy washer is very narrow and more plasticky than usual. Seems like it could easily break. But I think it's deliberate unless you remember differently on the one you bought? Anyway I can use washing up liquid as you suggest. It's weird that that nut is smaller than the rest, meaning I can't just use spare washers from the previous fittings - why do that?!

Will definitely need to cut the top off the standpipe - it's probably only about an inch from the worktop at the moment. Googling it says to leave a gap of 2 to 4 inches... 

Nearly finished product:

WIAWSNB

Joy_12345 said:

Phew, thanks for confirming I don't need to start again!

The unstretchy washer is definitely not there. And the stretchy washer is very narrow and more plasticky than usual. Seems like it could easily break. But I think it's deliberate unless you remember differently on the one you bought? Anyway I can use washing up liquid as you suggest. It's weird that that nut is smaller than the rest, meaning I can't just use spare washers from the previous fittings - why do that?!

Will definitely need to cut the top off the standpipe - it's probably only about an inch from the worktop at the moment. Googling it says to leave a gap of 2 to 4 inches... 

Nearly finished product:

Perfection :-)

Ah, you mean the washer where the vertical pipe enters the U-bend? That rings a bell - it was different, thinner and more plasticky, and not rubber like the others. And I think you may be right - it didn't have a flat washer with it.

Why is it different? No idea, but that joint isn't exposed to water like the others, as the vert pipe goes snugly into the lower fitting a good number of inches, and that washer will barely see water at any point. I guess it makes it easier to remove the vert pipe by simply slackening the collar, but hey. It's one of these weird scenarios where you wonder what went through the designer's head.  

Once you get your DW, check if the hose comes with that clamp. Assemble it, and hold it against the vert pipe, and mark how far down it needs trimming to, to allow the hose to go in easily. And as Molerat says, it only needs to go in say ~200mm. Enough to not pop out with the flow of water - no more than half way down that pipe. 

That setup will absolutely work fine. You wee plumber, you. 

jennifernil

If your dishwasher has a decorative top on it, as ours does, will it project back far enough to reach the wall?  If so that pipe will need to be cut to a height where pipe plus hose does not get in the way.

WIAWSNB

jennifernil said:

If your dishwasher has a decorative top on it, as ours does, will it project back far enough to reach the wall?  If so that pipe will need to be cut to a height where pipe plus hose does not get in the way.

I suspect the lower pipework will render that moot. But, yes, needs looking at. 

jennifernil

Yes, I was wondering about that.  Personally, I would have extended the DW hose to reach that under sink connection,  although that would be more work.

Having noticed in estate agent photos how freestanding WMs and DWs always protruded well beyond the adjacent cupboards, in this house and our previous one we fitted a deeper worktop where the DW would sit.   Protruding machines are fine in a utility room, but a pain in the kitchen!

Joy_12345

WIAWSNB said:

Perfection :-)

Ah, you mean the washer where the vertical pipe enters the U-bend? That rings a bell - it was different, thinner and more plasticky, and not rubber like the others. And I think you may be right - it didn't have a flat washer with it.

Why is it different? No idea, but that joint isn't exposed to water like the others, as the vert pipe goes snugly into the lower fitting a good number of inches, and that washer will barely see water at any point. I guess it makes it easier to remove the vert pipe by simply slackening the collar, but hey. It's one of these weird scenarios where you wonder what went through the designer's head.  

Once you get your DW, check if the hose comes with that clamp. Assemble it, and hold it against the vert pipe, and mark how far down it needs trimming to, to allow the hose to go in easily. And as Molerat says, it only needs to go in say ~200mm. Enough to not pop out with the flow of water - no more than half way down that pipe. 

That setup will absolutely work fine. You wee plumber, you. 

Thank you

Slinky

jennifernil said:

Having noticed in estate agent photos how freestanding WMs and DWs always protruded well beyond the adjacent cupboards, in this house and our previous one we fitted a deeper worktop where the DW would sit.   Protruding machines are fine in a utility room, but a pain in the kitchen!

We had that in a previous house and replaced the worktop with a piece of trimmed down breakfast bar so it overhung the top of the machines.