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  1. #1
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    Well Pump question

    Ok, I think our well pump has run its course. While I applaud my FIL's committed effort to save money and keep the old dinosaur running it is more of a pain in the butt then its worth. It makes a ton of noise, has no siphon back valve(albeint I added one but its cludgy). I cannot run lawn sprinklers because the back pressure is to high and it always push the head gasket out and then the thing leaks like a sieve.

    So what are you guys using for a well pump. I know there are many out there but I want a reasonably quite one that I can run sprinklers and whatever without blowing seals.

    Thanks in advance

  2. #2
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    they are all the same these days, doesn't matter really, only the price and pressure matters

    of course don't take a non-japanese one

  3. #3
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    mitsubishi.

    6 years of trouble free pumping so far.

  4. #4
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    Quote Originally Posted by crackerjack101 View Post
    mitsubishi.

    6 years of trouble free pumping so far.
    Got a model number for reference?

    Thanks

  5. #5
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    Yellow Mitsu's , mine has lasted 10 years before needing repair.

  6. #6
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    Quote Originally Posted by JPPR2 View Post
    Quote Originally Posted by crackerjack101 View Post
    mitsubishi.

    6 years of trouble free pumping so far.
    Got a model number for reference?

    Thanks

    There are different sizes so select according to your needs.
    I'm pretty sure ours is over spec. for the well and we have a second one that runs the standby tanks.


    MITSUBISHI ???? WP305Q5 ???????????????? (??????) ???? 300 ????? | Lazada.co.th

  7. #7
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    My Fujika has lasted 11 years but is getting rusted

    will get a Mitsu to try next,

  8. #8
    Thailand Expat Humbert's Avatar
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    Well pump. Mitsan is the most used around here. Not to be confused with a pump for household water.

  9. #9
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    Thanks for the quick response TD'ers. I will review specs then just buy it and have it delivered with a big bow wrapped around it addressed to my FIL...LOL Of course my wife will get a bit huffy being I spent money even though the pump that we have works......marginally..LOL

  10. #10
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    JP, when we got ours they said it could sit out in the open without any problems. I found that hard to believe and we got a bit of a box affair to protect it from the elements. I'd strongly advise you do the same. We got it serviced about a year ago and the guy said it was perfect, thanks to the protection.
    Last edited by crackerjack101; 20-02-2017 at 04:11 PM.
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  11. #11
    Thailand Expat Dillinger's Avatar
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    Quote Originally Posted by JPPR2
    I think our well pump has run its course
    Ask David 48, sure he said he's got a spare one somewhere

  12. #12
    Sukhumvet
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    I think lift or suction head is the most important number. Most only lift 9m, if your well is deeper than that you need something different.

    Where do you/FIL live? If near Buriram then my mate Bob can help you. If not well...

  13. #13
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    Quote Originally Posted by crackerjack101
    JP, when we got ours they said it could sit out in the open without any problems. I found that hard to believe and we got a bit of a box affair to protect it from the elements. I'd strongly advise you do the same. We got it serviced about a year ago and the guy said it was perfect, thanks to the protection.
    Agreed, we have a well cover and the pump sits on a SST fab'd plate I had made. it is well protected and our well is always in the shade which helps a lot

    Quote Originally Posted by VocalNeal
    I think lift or suction head is the most important number. Most only lift 9m, if your well is deeper than that you need something different.
    The down tube I added the anti siphon valve is about 5 meters long, tops, I did not measure.

    Quote Originally Posted by VocalNeal
    Where do you/FIL live? If near Buriram then my mate Bob can help you. If not well...
    We live in Lampang, but thanks for the offer

  14. #14
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    While replacement well pumps are mostly less than 10K, would advise replacing intake filter/non return valve and check that it above any silt in your well. The fact that your pump is noisy indicates that the bearings are shot likely due to mud/grit from your well.

    Have two wells and pumps think one is Swedish and to'ther German. The Jet pump burned out and had it rewound for around 800bt. Doubt that new bearings for your old pump would cost much more.

  15. #15
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    555..BTW if you decide to get your pump repaired as a spare..hide from your Mrs..

    Replaced our Hitachi domestic pump because it was leaking..left for later attention..came back from overseas and my dear wife and SIL had sold it for scrap along with a few tonnes of my empties...

  16. #16
    Sukhumvet
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    It sounds like the existing set up has no pressure switch or integral buffer tank. Hence the gasket problem when using sprinklers as the pressure gets too high?

    That being said no point in having the switch and volume tank if the system is open-ended with no taps. If it is connected to the house for toilet/shower then OK.

    Most small local farm houses have a open ended pump to manually fill storage and residents shower in the traditional way so there are no closed taps/valves for the pump to build up pressure against when it stops automatically.

    You might use this as a sizing guide? If you substitute number of sprinklers for number of taps or if you know the flow-rate of the sprinklers. Who is paying for the electricity? OP or FIL?

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  17. #17
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    Quote Originally Posted by JPPR2
    So what are you guys using for a well pump. I know there are many out there but I want a reasonably quite one that I can run sprinklers and whatever without blowing seals.
    Hey can you post a pic of your current setup? It will tell everyone the size of the well and they type of pump you are using, witch will in turn tell us the depth.

    Are you running the house & sprinklers straight off the well pump or do you have a storage tank as well? How is your house setup?

    If you can post the part numbers on the ID tag that would help identify your current pump as well.

    Sounds like you need a Mitsubishi/lucky star Jet pump and thats completely different than the one crackerjack listed.

  18. #18
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    Quote Originally Posted by VocalNeal
    You might use this as a sizing guide?
    None of those are "well pumps" though - would be used if one had a storage tank not pulling from a well.

    Unless I missed something?

  19. #19
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    ^ Way to go Sherlock. It says use as a sizing guide. Not a selection table.

    The first thing you should consider when looking for the right shallow well water pump is performance. What amount of water at what pressure do you need? Choose a water pump that will meet all your water demands as desired. Don’t look at the high costs, look at performance.
    Still fair comment, as I can't teach English as a second language.

    A pump is a pump is a pump. They have different characteristics and different design but they all use energy to move a non-compressible fluid.

    Someone also suggested a WP305Q5 which is also not a "well" pump but could be used if water is close to the surface.

    That being said the fact that the pumps above quote a maximum suction head of 9m suggested they can pull water upwards.
    Last edited by VocalNeal; 21-02-2017 at 10:45 AM.

  20. #20
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    Quote Originally Posted by VocalNeal
    Way to go Sherlock. It says use as a sizing guide. Not a selection table.
    So you think its a good idea, or any way accurate to use a sizing guide for constant pressure pumps to figure out what size jet pump is needed?

    Quote Originally Posted by VocalNeal
    Someone also suggested a WP305Q5.
    Constant pressure pump

    Quote Originally Posted by VocalNeal
    That being said the fact that the pumps above quote a suction head of 9m suggested they can pull water upwards.
    Would you use a constant pressure pump at its maximum suction head? Or would you get a jet pump of the exact same price for that depth? Makes no sense to use a constant pressure pump to pull water from several meters deep when a jet pump is the better choice and the same price.

    Anyway fuck knows what kinda pump JPPR2 has. Maybe he has a constant pressure unit and I'm misunderstanding his requirements.

  21. #21
    Sukhumvet
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    Does the OP need a jet pump?

    His well is only 5m deep or the water is at 5m below the surface.

    So any pump that can move the volume of water he needs from the depth he needs.

    Up to you then, to ask pertinent question of the OP and recommend a pump.

  22. #22
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    Just bought this about 2 months ago for about $40-45 USD can't remember missus thinks I only paid 30 anyway for that price you can hardly go wrong.
    Well goes down about 6 meters I've had troubles getting it to lift so I've just put a stop cock on both ends of the hose to stop back syphon.
    Don't run sprinklers just transfer to tanks specs look good in pic but think they've over rated them.




  23. #23
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    Quote Originally Posted by VocalNeal View Post
    It sounds like the existing set up has no pressure switch or integral buffer tank. Hence the gasket problem when using sprinklers as the pressure gets too high?

    That being said no point in having the switch and volume tank if the system is open-ended with no taps. If it is connected to the house for toilet/shower then OK.

    Most small local farm houses have a open ended pump to manually fill storage and residents shower in the traditional way so there are no closed taps/valves for the pump to build up pressure against when it stops automatically.

    You might use this as a sizing guide? If you substitute number of sprinklers for number of taps or if you know the flow-rate of the sprinklers. Who is paying for the electricity? OP or FIL?


    Interesting..However the back pressure problem when using sprinklers is easily solved. Just install a 'T' at the outlet with a tap to return water to well...adjust as necessary?

  24. #24
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    Quote Originally Posted by crepitas
    Interesting..However the back pressure problem when using sprinklers is easily solved. Just install a 'T' at the outlet with a tap to return water to well...adjust as necessary?
    Shouldnt need any of that. The pumps being listed have pressure switches noted in the "Pressure Switch SW" section and lists their cut in & cut out pressure range. They cycle on their own and need no adjustment.

    OP's pump has an issue of some sort either a faulty switch or rusty parts, age, etc... Or he might have a centrifugal pump like Brisie that likely has no pressure switch at all, and that could surely cause a back pressure issue if installed incorrectly.

    And your "T" solution would only work venting overpressure in a fixed system. If you closed a valve before shutting off the pump, there by increasing pressure, you would pop a gasket again.

  25. #25
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    Quote Originally Posted by VocalNeal
    Does the OP need a jet pump?

    His well is only 5m deep or the water is at 5m below the surface.
    Well yeah I would - not even sure how this is a logical question considering they are almost the same price and are designed to work like this.

    But again no idea what OP's situation is, bore size, and current pump setup etc...

    And its kinda why Brisie is having the issue he's having. Theses centrifugal pumps and constant pressure pumps are not efficient at all trying to pull water from depth. Can they do it? Yeah. Is it a good choice? Not really but it depends. For $40 its alright but getting it to do what you want can be a disappointment.

    Quote Originally Posted by brisie
    Well goes down about 6 meters I've had troubles getting it to lift so I've just put a stop cock on both ends of the hose to stop back syphon.
    Don't run sprinklers just transfer to tanks specs look good in pic but think they've over rated them.

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