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From: Martin Brown <'''newspam'''@nonad.co.uk>
Newsgroups: sci.electronics.design
Subject: Re: Damned Projects!
Date: Sun, 29 Dec 2024 13:44:32 +0000
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On 28/12/2024 16:04, mas@a4.home wrote:
>>>>>> On Thu, 26 Dec 2024 19:29:11 +0000, Cursitor Doom <cd@notformail.com>
>>>>>> wrote:
>>>>>>
>>>>>>> Gentlemen,
>>>>>>>
>>>>>>> I'm currently in the process of building a device which will shut off
>>>>>>> the power to a washing machine in the event of a hose failing and
>>>>>>> spewing water out all over the floor. This is an eventuality which has
>>>>>>> always caused me considerable angst, so I finally decided to do
>>>>>>> something about it. After all, those flimsy 'exhaust' hoses go brittle
>>>>>>> over time and having one split 'in action' could cause a significant
>>>>>>> amount of damage to the surrounding area in a very short time. Having
>>>>>>> something to cut the power off instantly as soon as the water hits the
>>>>>>> floor would be a very worthwhile addition to the utility room and
>>>>>>> beyond.
> 
> I'm wondering about removing the washer intake valve from the washer
> and hard connecting it to the supply.  No hoses.  Then only one hose
> goes from the valve output to the washer and it only has water in it
> when the washer is filling.

That will be very interesting when the washing machine enters a spin dry 
cycle with a moderately unbalanced load and starts shaking violently.

Replacing the hoses periodically is probably a much safer option YMMV.

> PS: Braided stainless steel isn't water tight.  From what I've read
>      what's inside and how the ends are crimped is more important.
>      How long do real hydraulic hoses last?  They don't have a stainless
>      outer braid.

Japanese washing machines are typically installed with a drip tray on 
mains drainage plumbed in underneath to accommodate any systematic 
failures. I have never seen than done anywhere else.

-- 
Martin Brown