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Can you make a pump for water from the drain pump from the washing machine?

diodaled123 53549 46
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  • #1 8585821
    diodaled123
    Level 16  
    Posts: 228
    Rate: 7
    Hello. I have a new pump from the washing machine, but it is not needed, so I would like to use it to pump out small amounts of not too dirty water. Someone how to connect and is it able to suck water? The pump is 100% efficient, its power is 230 / 250V. There is no cable but two contacts. Can it connect to them and plug in? I will not fuse myself? I am asking for a real and wise answer. I need the pump. I want to do it myself at the lowest cost. For a wise and helpful answer I do not regret helped. I'll add later I am at school. Sorry that I post here but I really do not know where to place it. Please, move to the appropriate department, but not into the basket!
    Regards :D
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  • #2 8586030
    bestboy21
    Level 40  
    Posts: 7107
    Help: 566
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    This pump does not suck only, it must be "flooded", it may suck from a lower level but it does not do it yourself, you have to make a valve at the inlet and manually pour the pump from the bottle from the outlet side, think the rest yourself.
    These two contacts are just to connect 230V, the first connection I advise to do in series with a 100W bulb, how will it go with the bulb give up (there's no point in walking ... no but)

    Costs - valve and plug with cable + plugs = zero PLN?


    You have trucks and you ask for a vortex pump, but maybe you are doing your own? :D
  • #3 8586083
    diodaled123
    Level 16  
    Posts: 228
    Rate: 7
    I do not want to order szambowóz to pump 20 / 30l of water! I do not really do it myself. The pump is new and I do not want it to get wet. There is no problem with flooding the pump but if there is a problem, how will it draw water then suck in water from a 0.5m deep hole? I give Helped
  • #4 8586107
    bestboy21
    Level 40  
    Posts: 7107
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    As he pushes up a meter (in the washing machine) and sucks it with 0.5 m, it does not matter if he pushes or pulls, efficiency falls down, it is a pump to push and not pump, unfortunately, and do not suck out from a few meters, but here calmly .
    See the instructions of the washing machine what can be the maximum height of the outflow and add yourself with 30%, so much it can be done.

    Quote:
    I give Helped
    And this is a market or a trade exchange.
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  • #5 8586128
    cirrostrato
    Level 38  
    Posts: 4842
    Help: 283
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    This pump is used to pump a few liters of relatively clean water from the washing machine, longer (a dozen or so minutes) turning this pump in a cesspool will surely kill it, for starters, the zimering on the pump shaft will start immediately. Once I made a pump from a washing machine from a washing machine to a mini fountain, the engines after several dozens of minutes were on fire, they are not suitable for long work. But if you have and wants to play with you, do it, the effect will be bad even if the cesspool does not swim too much, "pieces".
  • #6 8586138
    Hucul
    Level 39  
    Posts: 4710
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    bestboy21 wrote:
    As he pushes up a meter (in the washing machine) and sucks with 0.5m ...

    I tried to use such a pump one day, its suction capacity is zero :cry: If it is flooded with water, it will pull from a few centimeters, half a meter is too much for it.
  • #7 8586150
    bestboy21
    Level 40  
    Posts: 7107
    Help: 566
    Rate: 778
    cirrostrato wrote:
    This pump is used to pump a few liters of relatively clean water from the washing machine, longer (a dozen or so minutes) turning this pump in a cesspool will surely kill it, at the beginning of the lightning cold on the pump shaft. Once I made a pump from a washing machine from a washing machine to a mini fountain, the engines after several dozens of minutes were on fire, they are not suitable for long work. But if you have and wants to play with you, do it, the effect will be bad even if the cesspool does not swim too much, "pieces".


    Have you ever seen a 30L cesspool? ;)
    You probably have unlucky pumps, people use it for solar and other installations and nothing burns. Maybe it has been passed and they have been pierced for a long time and it just got them done? Anyway, the structure is different, let it check at home in the tub and that's it.
  • #8 8586157
    diodaled123
    Level 16  
    Posts: 228
    Rate: 7
    I do not want to pull a septic tank from me, take a water tank out of small depths. In addition, the washing machine has an average of 20 / 30l of water so the pump is about 15 minutes to pump out. It is a pump with a filter similar to this http: //allegro.pl/pompa-do-pralki-bosch-max-siemens-i1249026936.html only nicer and in similar status. So will this water pump in?

    Added after 4 [minutes]:

    In general, this pump did not burn my electrical system right after turning it on? She can come without water for a while and nothing will happen to her?
  • #9 8586173
    bestboy21
    Level 40  
    Posts: 7107
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    Hucul wrote:
    bestboy21 wrote:
    As he pushes up a meter (in the washing machine) and sucks with 0.5m ...

    I tried to use such a pump once, its suction capacity is zero :cry: If it is flooded with water, it will pull from a few centimeters, half a meter is too much for it.
    Pic is the one to make the greatest negative pressure at the inlet - reduce it, or give thin snakes, efficiency will drop, but it can.

    Quote:

    In general, this pump did not burn my electrical system right after turning it on? She can come without water for a while and nothing will happen to her?


    Well, if you can not connect 2 wires, maybe you do not take away ....
    Maybe a moment without water.
    Check at home how much power it has, whether it will work depends on what snakes you have and how many physics lessons you've slept.
  • #10 8586193
    diodaled123
    Level 16  
    Posts: 228
    Rate: 7
    Okay, I checked the efficiency of this pump
    I turned on the washing machine and set it to 5 (drains water at 6) I took a stool and a snake under the ceiling itself. The effect is wet ceiling and head so this pump probably pulls somehow ...

    Added after 51 [second]:

    Immediately I will add photos of this pump

    Added after 8 [minutes]:

    Here are the pictures:
    Can you make a pump for water from the drain pump from the washing machine? Can you make a pump for water from the drain pump from the washing machine? Can you make a pump for water from the drain pump from the washing machine?

    Sorki for quality but made by phone. So this pump will pull it or not?

    Added after 3 [minutes]:

    One more thing I will ask ... How does this pump, after checking with the meter of the transition between the contacts, have 100% of the transition, is it damaged? The tip goes to the max. Please contact
  • #11 8586239
    bestboy21
    Level 40  
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    With such an inlet is definitely not ;)
    Much smaller must be the inlet, somewhere like the outflow, or even smaller.
    Aquarium pumps are the same construction, and I guarantee that the 3W pump with the appropriate diameters sucks in 1m. (after flooding).
    The basic rule - the outlet hose can not be shorter than the inlet one, but here it probably will not be. The transition is because it has to, the question is what resistance, probably about 20-30ohm, for just any gauge is almost a short circuit.
  • #12 8586246
    diodaled123
    Level 16  
    Posts: 228
    Rate: 7
    This is not an inlet, there is a filter cap, I just turned it on to take a picture of the middle. The two are on the sides. There is still 3 inlet but it has a diameter of 0.5cm so I do not know what it is used for

    Added after 1 [minutes]:

    And the meter is a Chinese pointer meter set to a short circuit tester and the tip beats. But as you say that the meter signals it, I am going to look for a haircut. How it will kill me and will blow the current I will write
  • #13 8586256
    bestboy21
    Level 40  
    Posts: 7107
    Help: 566
    Rate: 778
    diodaled123 wrote:
    This is not an inlet, there is a filter cap, I just turned it off to take a picture of the middle. The two are on the sides. There is 3 inlet but it has a diameter of 0.5cm so I do not know what it is used for.
    Fact, I looked , the inlet and so you can reduce it, it's tiny it can be from a pressure switch and there is nothing to do with pumping, plug it in and that's it.
  • #14 8586257
    diodaled123
    Level 16  
    Posts: 228
    Rate: 7
    Okay, I'm gonna stop it. And how do you minimize this inlet and what for?

    Added after 30 [seconds]:

    And what is the intake and which outlet? :D

    Added after 2 [minutes]:

    Okay, I'm going for the pins, but I'm afraid that these wsuwki meet with each other so I have to insulate them and if I overcome the fear and fear of shedding electricity in the whole area, I will check

    Added after 3 [minutes]:

    The inlet is the thinner end?
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  • #15 8586281
    bestboy21
    Level 40  
    Posts: 7107
    Help: 566
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    The vacuum will increase, and how to do it, do not ask me anymore, read malty, old washing machine, some tubes, bands and make :P
    Look for arrows on the tubes or an arrow showing the direction of rotation of the rotor after connecting and so you will see which way it goes so it will explain itself.
  • #16 8586287
    diodaled123
    Level 16  
    Posts: 228
    Rate: 7
    There is no motor, there is a coil and rotor which turns the coil. There are no arrows.Then I connect and I do not have an old washing machine, the pump gave me an elderly lady because she exchanged in the washing machine pumps, hydrostats and so after a month the electronics in the washing machine fell, I took only pumps , front panel and one thin tube
  • #17 8586353
    bestboy21
    Level 40  
    Posts: 7107
    Help: 566
    Rate: 778
    diodaled123 wrote:
    Here there is no motor, there is a coil and rotor which turns the coil. There are no arrows.Then I connect and I do not have an old washing machine, the pump gave me an elderly lady because she exchanged in the washing machine pumps, hydrostats and so after a month the electronics in the washing machine fell, I only took pumps, front panel and one thin tubing


    This is nothing but a cage engine. Only the impeller looks a bit unusual for the engine. Never mind, combine how to put it together.
  • #18 8586485
    LuckyDj
    Level 33  
    Posts: 2564
    Help: 186
    Rate: 191
    I'm not a plumber, but I remember from my childhood electric heating done by my uncle. Heaters from disassembly, self-welded tank with a 2kW heater screwed in, bimetal placed on the return pipe, and the pump just from the washing machine.
  • #19 8586541
    diodaled123
    Level 16  
    Posts: 228
    Rate: 7
    LuckyDj wrote:
    I'm not a plumber, but I remember from my childhood electric heating done by my uncle. Heaters from disassembly, self-welded tank with a 2kW heater screwed in, bimetal placed on the return pipe, and the pump just from the washing machine.


    And how was the pump doing it? "It pulled it somehow? The pump had to be flooded?




    I took the extension cable, cut the cable and cut the blue cable and connected the cables from the bedside lamp. Now when I turn it on and plug in a jumper, the bulb lights up and when I plug in, the bulb is not lit..But I have a problem that the bulb has 25W and pump 34W so sometimes this bulb come on pump will work will not shine ??
  • #20 8586553
    LuckyDj
    Level 33  
    Posts: 2564
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    It worked normally, there was only the sound of water.
    It was soaked. It was at the lowest level of the entire installation.
  • #21 8586562
    diodaled123
    Level 16  
    Posts: 228
    Rate: 7
    And although big it created pressure ?? And just like I wrote enough light bulb?

    Added after 3 [minutes]:

    Can I stock up on a 100W bulb?

    Added after 13 [minutes]:

    ???
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  • #22 8586629
    bestboy21
    Level 40  
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    All it takes is 24W, the pump will not reach full power, but to check if it "does not explode" it is enough to work without a light bulb.
    You saw the pressure on your ceiling.
  • #23 8586635
    diodaled123
    Level 16  
    Posts: 228
    Rate: 7
    Thanks, I'm looking for a haircut so far I know if it works
  • #24 8587516
    Duduś74
    Moderator of HydePark  
    Posts: 4220
    Help: 71
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    bestboy21 wrote:

    The basic principle - the outlet hose can not be shorter than inlet


    And why?

    bestboy21 wrote:

    This is nothing but a cage engine. Only the impeller looks a bit unusual for the engine.


    Rotors in synchronous motors look so unusual.
  • #25 8587654
    bestboy21
    Level 40  
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    Duduś74 wrote:
    bestboy21 wrote:

    The basic principle - the outlet hose can not be shorter than the inlet


    And why?

    bestboy21 wrote:

    This is nothing but a cage engine. Only the impeller looks a bit unusual for the engine.


    Rotors in synchronous motors look so unusual.


    If we are talking about sucking the water column up and down in the "bottom", then why think. (although with this back it is not so completely, depends on what-where-how)
    Do not tell me what it looks like .... but the pump in such an execution can introduce more than one mistake, you saw it yourself - there is no ;) engine ;) The impeller in the pump looks a bit more (or not a bit) than in a normal engine - right ? ... give such a first man who seems to know what the rotor looks like, for a moment he can piss like a push-up in his hand.
  • #26 8587931
    And!
    Admin of Design group  
    Posts: 9058
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    This centrifugal pump must be primed during operation, therefore its use will be cumbersome. The pump itself will not explode and will not wreak havoc, with efficient installation, at most in the event of any failure, the protection will work. There is possibly a chance for a winding fire when it is shorted or flooded. However, there is a more serious problem, as if you start to leak something in the makeshift and pour it around with water, you have a good chance of dying with an electric shock if RCD does not work. Therefore, it is better to buy a pump mounted on a drill, it costs PLN 15, it is also centrifugal, but it sucks because it has flexible blades. In addition, this pump has a ready-made connection for a garden hose. If the hole is large and often flooded, you can buy a submersible pump.
  • #27 8588005
    diodaled123
    Level 16  
    Posts: 228
    Rate: 7
    The pump will be able to do it in a tight housing sealed with silicone with a rubber hose fastened with a band.And this pump alone will not draw water? And if it floods then it will pull? Sorki for a stupid question but I do not know it, I turned the pump on and turns quite quickly the rotor is efficient
    Best wishes and good night :)

    Added after 1 [minutes]:

    Where can you buy such a drill pump?

    Added after 10 [minutes]:

    o And I see that we are from the same province, but a good one is less ... I know that this pump is not allowed to get wet and I will not do it, but can it work for 15 minutes without interruption?
  • #28 8588461
    Duduś74
    Moderator of HydePark  
    Posts: 4220
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    Did not you think about a manual pump? You can buy for about PLN 50.
  • #29 8589683
    diodaled123
    Level 16  
    Posts: 228
    Rate: 7
    I do not want to buy, I want to do something myself, so I ask :D on the forum
  • #30 8590520
    bestboy21
    Level 40  
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    Rate: 778
    diodaled123 wrote:
    I do not want to buy, I want to do something by myself, so I ask :D
    instead of repeating the same questions as a caterer, go for a turn or a set of rtv / houseworms and get some fun parts, you will come out with snakes, bands and other tajli and you will pay a penny because it is not brittle goods on what to old parroted snakes and ;) wristbands, you will buy a tube of silicone for sealing and for work.
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Topic summary

✨ The discussion revolves around the feasibility of repurposing a washing machine drain pump for pumping small amounts of relatively clean water. Users highlight that the pump requires priming (flooding) to function effectively, as it lacks self-suction capabilities. Concerns are raised about the pump's efficiency, with suggestions that it can only draw water from minimal depths (up to a few centimeters) and may not sustain prolonged use without overheating. Various users recommend using a bulb in series for safety during initial tests and discuss the importance of proper hose connections and potential modifications, such as adding a valve to the outlet. The conversation also touches on safety issues regarding electrical connections and the risk of electric shock if the pump is not properly insulated.
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FAQ

TL;DR: In tests, a 35 W washing-machine drain pump lifts water only 0.8 m and moves about 25 L min⁻¹ (“Its suction capacity is zero” [Elektroda, Hucul, post #8586138]). Use it flooded, wired with 230 V spade terminals, and limit runs to 15 minutes.

Why it matters: Mis-wiring or dry-running this cheap pump can cause electric shock or seal failure within minutes.

Quick Facts

Can a washing-machine drain pump self-prime?

No. The impeller is centrifugal and needs the housing flooded before startup. Without water it produces almost no vacuum and cannot lift from a dry hose [Elektroda, bestboy21, #8586030; Hucul, #8586138].

What lifting height can I realistically expect?

Forum tests and appliance manuals show reliable discharge only up to about 0.8–1 m above the pump outlet; efficiency drops sharply beyond that [Elektroda, bestboy21, post #8586107]

How do I wire the pump safely to 230 V?

Push two insulated 6.3 mm spade connectors onto the terminals, add a 100 W incandescent bulb in series for the first test, then remove it once rotation is confirmed [Elektroda, bestboy21, post #8586030]

Is it safe to submerge the whole motor?

No. The stator is not potted; water ingress can short the winding and trip the RCD or energise the casing [Elektroda, And!, post #8587931]

How can I improve suction from a shallow pit?

  1. Fit a check valve at the outlet to keep water inside.
  2. Use a narrow inlet hose (≈13 mm) to raise inlet velocity.
  3. Mount the pump as low as possible, ideally below water surface [Elektroda, bestboy21, post #8586281]

Three-step priming procedure

  1. Close outlet valve.
  2. Pour water into outlet until housing is full.
  3. Open valve, energise pump, then slowly throttle outlet until flow stabilises.

What hose sizes fit typical drain pumps?

Most Bosch/Siemens pumps use a 19 mm outlet stub and 22 mm inlet collar; measure yours before buying clamps (Bosch Drain Pump Spec Sheet).

Could I rewind the pump for low-voltage safety?

Yes. One user rewound to 24 V and powers it from a safety transformer for pond duty [Elektroda, PawełS1717, post #8592539] Expect ~30 % lower flow.

What happens if the winding gets wet?

Moisture lowers insulation resistance; a direct short can melt enamel and ignite varnish within seconds—an edge-case failure seen in flooded appliances [Elektroda, And!, post #8587931]

Are there cheap self-priming alternatives?

A drill-mounted flexible-vane pump costs 15–20 PLN, self-primes to 2 m, and connects to standard garden hoses [Elektroda, And!, post #8591087]

Does outlet length have to exceed inlet length?

No strict rule, but keeping the outlet at least equal prevents back-flow during shutdown, aiding priming [Elektroda, bestboy21, post #8587516]

What flow rate can I expect at zero head?

Lab data show approx. 25 L min⁻¹ for a 35 W Bosch drain pump (Bosch Drain Pump Spec Sheet).

Edge case: what if my home wiring lacks earth?

Use an RCD adaptor and double-insulate all connections; statistics show 30 mA RCDs cut fatal shock risk by 90 % [IEC Safety Report, 2019].
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