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Thread: Old pump what psi should I get

  1. #1

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    Old pump what psi should I get



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    Hi no water so upgrade pump 16 mm pipe jubilee clips fit.
    how high should the psi 20180807_213153.jpg20180807_174932.jpg20180807_175003.jpg20180807_213153.jpg20180807_174932.jpg20180807_175003.jpgt
    This one dated 4 91


    30 psi or 20 psi
    this is 3 amps
    Help balloon fiesta and shower must work

  2. #2

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    Think it's more about Litres per min than PSI
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  3. #3

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    A really old Shurflo 20psi pump that!, delivering 6.4 Litres per minute. If you ever
    replace it don't get anything with a higher pressure if you have a water heater
    it may not take more than 20 psi, a flow rate increase won't be of concern however,
    so long as you only use the same quantity of water.
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  4. #4

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    50 127 psi

    So which one please
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  5. #5

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    Quote Originally Posted by Byronic View Post
    A really old Shurflo 20psi pump that!, delivering 6.4 Litres per minute. If you ever
    replace it don't get anything with a higher pressure if you have a water heater
    it may not take more than 20 psi, a flow rate increase won't be of concern however,
    so long as you only use the same quantity of water.
    Mines 6.4 new one is 7 is that ok as I have boiler and shower in her van?

  6. #6

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    Most people take this as a opportunity to increase the flow rate I did mine from 8 ltr to 12 ltr the pressure staying the same but a noticeable difference in the flow rate at taps and shower and water spins around toilet bowl. You'll hardly notice 6.4 to 7
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  7. #7

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    As per screenshot 4 and 6?
    I have the Shurflo 20psi, 7litres/min flow. More than enough flow rate
    for my motorhome use. Any higher pressure and it would exceed the max.
    (by a fair margin) allowed by the water heater rating, which is 13psi.
    Shurflo used to make a 16psi unfortunately no longer available, I'd
    have been happier with that.
    Don't forget higher pressure means greater chance of leakage and
    pipe splitting. When you turn a tap off, particularly lever/trigger types found
    on shower heads it generates a degree of back pressure (water hammer)
    ie increasing water pressure. That's why I've remained with flexible hose
    type plumbing no leaks or splitting in 23 year age ancient pipework in my
    van.
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  8. #8

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    Quote Originally Posted by Byronic View Post
    As per screenshot 4 and 6?
    I have the Shurflo 20psi, 7litres/min flow. More than enough flow rate
    for my motorhome use. Any higher pressure and it would exceed the max.
    (by a fair margin) allowed by the water heater rating, which is 13psi.
    Shurflo used to make a 16psi unfortunately no longer available, I'd
    have been happier with that.
    Don't forget higher pressure means greater chance of leakage and
    pipe splitting. When you turn a tap off, particularly lever/trigger types found
    on shower heads it generates a degree of back pressure (water hammer)
    ie increasing water pressure. That's why I've remained with flexible hose
    type plumbing no leaks or splitting in 23 year age ancient pipework in my
    van.
    When my pump failed recently I upgraded to 30psi, or rather the chap doing the work did for me. A week later I was also buying a new water heater and I've had to fix a couple of leaks since too. To be fair the water heater needed changing anyway really, but it does rather prove your point...
    Thanks Byronic, 1 Cup thanked for this post

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