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Jammyjase

Shower in static caravan draindown

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Hi

 

my van has a caraflow v200 mixer tap intstalled  for the shower which I remove when draining down van. This is a really fiddly task and in the book it seems to say that you should leave the tap open in a certain position after disconnecting the water. My question is ‘does this mean I can leave it connected’. 
 

anyone with experience of this particular mixer tap is more than welcome to give me advice. 
 

thanks

 

jason

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Sorry just noticed that  you’re in a static. Posted in error my comment would only be applicable to a tourer. 

Edited by Tuningdrew
Posted in error.

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Water freezing in an open-ended pipe will not cause a rupture.  I've left my house empty over winter with no heating on.  I did drain the hot water system (but not the hot water tank) and left all the taps open.  The house got so cold the window cleaner could not wash the windows.  I never suffered any bursts.  Try putting a screw-top jar in the freezer half-filled with water.  As the water freezes it expands upwards, not outwards.  When I was a nipper, our state-issued bottles of milk at 

school would often freeze and push the foil top off - they never burst.

 

So, I don't think you should dismantle any taps.

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You might find the shower thermostatic mixer tap has a non return valve built in to it so it might not drain just by opening the tap. This link with a link to the tap procedures says it needs disconnecting to fully drain to totally avoid freezing https://www.caravan-components.co.uk/V200-Caravan-Vertical-Horizontal-Thermostatic-Shower-Mixer-Tap-TMV2

Unless you leave the heating on, at £50 for a new tap I would put up with disconnecting it but as a test follow the initial drain down and then remove the tap to see if any more water needed to be drained.

Edited by Paul1957

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Thanks Paul. When I remove it there is quite a bit of water comes out of the tap itself so I will just continue as I am. Thanks 

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Thanks Paul. When I remove it there is quite a bit of water comes out of the tap itself so I will just continue as I am. Thanks 

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When I owned a static I used to drain down and blow the pipes through I would ensure the shower mixer was open then wrap it with some bubble wrap to insulate, I never had any issues with it freezing at all. 

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All the thermostatic shower mixers I have had dealings with over the years have the instruction to remove when winter storing and keep in a warm place, that is warmer than a very cold static van.

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Thank you all for the replies. I’m just going to keep removing it. Happy new year

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If you do not remove the valve some water will remain in the cassette even though the taps are left in the open position, I had this happen to me a few years ago and the casing had split when it thawed out, after that I removed the shower mixer valve. Remember the U bend for the shower is outside the van and it is a good idea to put some anti freeze or concentrated windscreen washer fluid down the shower drain.

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