new water pump query

Discussion in 'Motorhome Chat' started by con-tiki, Aug 14, 2014.

  1. con-tiki

    con-tiki Funster

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    I want to get an external water pump fitted instead of the submersible type. My question is that as my taps have micro switches on them do they have to be replaced as well....Any recommendations for water pump.

    Shirl
     
  2. TheBig1

    TheBig1 Funster Life Member

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    no you can run a fixed internal pump on microswitches by bypassing the pressure switch. alternatively it can be wired as a pressure operated system bypassing the microswitches, which is better
     
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  3. mariner

    mariner Funster Life Member

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    I would say the taps will be ok, though you might want to remove the wiring.
    If you are looking for a surflo pump I have a brand new unused one going for around half new price plus postage if you are interested.


    :cooler:
     
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  4. timdownieuk

    timdownieuk Funster

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    One thing to be aware of, external pumps can be significantly noisier than submersible pumps which may be an issue for you.
     
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  5. con-tiki

    con-tiki Funster

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    My sister has one in her hymer and its not too noisy.
     
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  6. JeanLuc

    JeanLuc Funster

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    What's wrong with the standard Reich submersible fitted in the Hymer? I have found it to be reliable, quiet and sufficiently powerful. And it's cheaper than the Shureflo to replace.
     
  7. timdownieuk

    timdownieuk Funster

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    It's all relative. The submersible pump on our last van was a lot quieter than either the external pump I fitted or the external pump on my present van.

    Biggest downside to submersible pumps is that they're not self-priming.
     
  8. con-tiki

    con-tiki Funster

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    What are the specs of the pump. I am not sure what I need..
     
  9. JeanLuc

    JeanLuc Funster

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    I have never had to prime the Reich submersible in my Hymer - I just fill the tank and open a tap.
     
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  10. con-tiki

    con-tiki Funster

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    I have trouble every time with the submersible.. drives me insane. More time is spent getting water to come through taps..then when all seems ok...splutter splutter...by the time I have fiddled with the pump again half the water in my tank is gone...
     
  11. timdownieuk

    timdownieuk Funster

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    Okay, clearly some systems are better designed than on our old Sundance. :D

    On that, if the tank ran dry, I always had to "break" the water circuit near the tank to eliminate an air-lock.

    I wonder if that is a pump difference or a plumbing layout difference? I would consider "downgrading" from my present external pump if I could be sure of not having priming problems.
     
  12. JeanLuc

    JeanLuc Funster

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    Something wrong with either the pump or the joints in the system then. A new Reich will cost about £40 and once fitted correctly, should work perfectly. As I said above, I have never had a problem with mine, although I fitted a new one two years ago, but that was simply because I thought the old one might fail at some future point and I was carrying a new spare around anyway so swapped them. One thing to check is whether the non-return valve that is part on the outlet feed on the pump is still working. They can fail and then the water will keep flowing back into the tank, creating air-locks (the symptoms you describe). The solution is either to get a new pump (the model with NRV) or fit an extra NRV in the pipework. Howver, there is little room above the pump to fit this so it would probably have to be outside the pump. I would fit a new pump if it was me.
    This is the one you need: http://www.marcleleisure.co.uk/stor...e-pump-with-nonreturn-valve-hymer-p-4178.html

    p.s. this is in answer to con-tiki's last post
     
  13. con-tiki

    con-tiki Funster

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    Thanks for the info. The pump is probably the original one as it is labelled hymer. It has 2 hoses that go into the tank...one is the pump the other? its not labelled but perhaps NRV ? its about the same size as the pump which has probably past its sell by date. Think I will go for the submersible and see how it goes.

    I notice the reich pump only uses 1 hose connection. What do I do with the other hose I have that goes into the tank


    Thanks everyone for your input
     
  14. timdownieuk

    timdownieuk Funster

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    Does the other hose dip into the tank or is it just connected to the top? It may just be an overflow.
     
  15. Tootles

    Tootles Funster

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    My submersible is fine, in the Hymer, however the cold micro switch in the bathroom mixer/shower tap is U/S, and its cheaper to get a Whale diaphragm or a surflow then to buy a new tap assembly. :(:(
     
  16. timdownieuk

    timdownieuk Funster

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  17. mariner

    mariner Funster Life Member

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    Shurflo 2095-204-412

    1.85 GPM

    7.0 LPM

    4.5 Amps

    12V DC

    Pressure Setting 20 PSI

    Operates Automatically On Demand.

    Got it to replace a noisy pump in my MH, but as I sold the MH before I got around to fitting it, I don't need it anymore

    :cooler:
     
  18. gillnphil

    gillnphil Funster

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    You need a "non return valve" fitted in line just by the tank outlet. All your troubles will be over. They cost about £ 4. The same pump as the Hymer is made by Reich, except no non return valve, so you need one.
    I fitted on on my Hymer starline and all the spluttering just disappeared.
    Phil
     
  19. Terry

    Terry Funster

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    I would fit the Sureflo and forget about micro switches etc;)they are a pain :)
    terry
     
  20. JeanLuc

    JeanLuc Funster

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    message for con-tiki,
    The Reich twin barrel pump is available in two models: with, or without non-return valve. If you decide to replace yours, just make sure you get the correct model as shown in my previous post link to Marcle Leisure (supplier). The second pipe leading to the tank top is a breather - make sure you connect the pump to the correct pipe! If you need any pictures of the installation or more info just ask.
     
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