Stand Pipe too short!

DIY101 · Posted: Thu Sep 16, 2004 6:10 pm Post Subject: Stand Pipe too short!

Having just moved into a new house I have found that the current plumbing is set up with a standpipe that is only 1ft. The installation people suggested putting a sealed join with a spigot over, but that would leave no outlet if there were a pressure build up (is that right??). Unfortunately there is a worktop above the current pipe so installing a longer one is not an option.

Joining it to the sink waste is not really an option as it is on the other side of the room. Is getting a deeper U-Bend going to help? or am I going to have to have the current plumbing replaced to have the waste pipe drilled in lower down the wall?

Any advice...?

breezer · Posted: Thu Sep 16, 2004 6:19 pm Post Subject:

why not just extend the pipe a bit more to that of the required height?

I take it its for a washing m/c or dishwasher? in which case a spiggot is NOT recomended by be since they tend to get clogged up, but that is just my opinion

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esmyth · Posted: Thu Oct 14, 2004 4:12 pm Post Subject: blocked spiggots

are spiggots for dishwahsers as likely to get blocked as those for washing machines?

i have one vertical waste to attach both the sink and dishwasher to. how would you suggest i proceed if not with a waste with applicance adaptor?

brumylad · Posted: Thu Oct 14, 2004 6:16 pm Post Subject:

I did a job, similar to the one you describe, quite recently. My main concern was that the top of the stand pipe was just below the level of the work surface and the stand pipe could only be linked into the waste pipe from the kitchen sink (if the cost of the job was going to be kept at a sensible figure). I was concerned that should the sink fill to spill over level, water would pour out of the stand pipe.

I was ready to incorporate one of the recently introduced waste non-return valves but fortunatly this did not happen, so this costly fitting not needed. In an effort to conform even to the spirit of the building regs., I incorporated an air admitance valve into the 4m 40mm pipe run.

From your post I can only imagine that your main concern is the length of the of the stand pipe. As I understand things your washing machine pump which pumps out the waste water should never run dry, therefore surely it is the height of the stand pipe above floor level and not its length that is the main thing. If your worktop height is not unusual, then I'm not sure you have anything to worry about. I would suggest you contact the manufacturer and get their opinion.