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[Solved] Connecting the washing machine to the sink - how to connect properly?

inka0207 26241 19
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How do I properly connect a washing machine under the sink when the water and drain hoses are too short?

Use a proper under-sink siphon/trap with a washing-machine spigot and a suitable angle or combo valve for the water supply; do not try to connect the drain to the blind plug or replace the siphon with a corrugated hose [#18895763] [#18896689] [#18907947] The inlet hose can be extended with a nipple and an additional hose, or you can use a valve that provides both the faucet and washing-machine connection [#18895748] [#18895763] For the drain, keep the washing machine’s original drain hose and only extend it with a proper extension if needed; one reply notes the total drain-hose length should not exceed 5 m [#18896689] If the wall drain is too high or the current siphon arrangement does not fit, you may need a different siphon and more photos to confirm the space under the sink [#18895955] [#18896689]
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  • #1 18895542
    inka0207
    Level 5  
    Posts: 13
    Rate: 14
    Hello,
    I would like to know the best way to connect a washing machine under the sink:
    1. drain and water supply
    2. too short hoses or can they be extended?
    3. whether a good solution for the supply would be to use an angle valve with an outlet for the washing machine.
    4. what needs to be purchased to connect the drain to the sink trap, photo
    Connecting the washing machine to the sink - how to connect properly?
    Pictures of the sink connection
    Connecting the washing machine to the sink - how to connect properly? .
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    #2 18895748
    ewoo
    Level 30  
    Posts: 1298
    Help: 158
    Rate: 409
    ad 2 you can, nipple + additional hose Connecting the washing machine to the sink - how to connect properly?

    ad 3 yes, e.g.: Connecting the washing machine to the sink - how to connect properly?

    ad 4 replace the siphon for example with such: Connecting the washing machine to the sink - how to connect properly? .
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  • #3 18895763
    Kenworth 18
    Level 43  
    Posts: 10999
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    As for the siphon, it is enough to buy such: https://lazienkidybel.pl/httppolsyfon-do-umyw...-odprowadzeniem-pralki-viega-5727pl-p-95.html ( probably it is enough to translate only the upper tube with the spigot to the washing machine connection)
    As for the water connection valve, this type will solve your dilemma: https://www.unisan.net.pl/products/zawor-do-pralki-i-baterii-kombi you will connect both the washing machine hose and the hose from the battery.
    Remember to arrange the drain hose according to the advice in the manual of the washing machine so that there are no problems with the drain.
  • #4 18895933
    ta_tar
    Level 41  
    Posts: 6438
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    Rate: 2027
    As for point 4, this could be a problem, because if my eyesight doesn't deceive me, the author has an automatic stopper on the lever, and the proposal to replace the siphon might mess things up a bit (it might not all fit).
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    #6 18895955
    ta_tar
    Level 41  
    Posts: 6438
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    Rate: 2027
    The problem may be that the drain in the wall may be too high as the author puts it all together. We can't see the rest under the sink and some more photos would be helpful.
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    #7 18896027
    Kenworth 18
    Level 43  
    Posts: 10999
    Help: 2387
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    Please still specify which hoses are too short? Both connection hoses from the washing machine?
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    #8 18896052
    ewoo
    Level 30  
    Posts: 1298
    Help: 158
    Rate: 409
    ta_tar wrote:
    the author has an automatic stopper on the lever and the suggestion of replacing the siphon might mess things up a bit


    It looks incomplete, no lever.

    Added after 4 [minutes]:

    Kenworth 18 wrote:
    Please still specify which hoses are too short? Both connection hoses from the washing machine?


    And I thought the hoses to the faucet were the ones at the washing machine.
  • #9 18896430
    inka0207
    Level 5  
    Posts: 13
    Rate: 14
    Unfortunately, the siphon can not be replaced because the drain is too high.
    And to point 4 can such a nozzle and connect the washing machine drain?

    Connecting the washing machine to the sink - how to connect properly?


    Hoses from the washing machine are too short but I found that you can buy longer.
    With the inlet will not be a problem but if I connect a longer hose to the drain, the pump from the washing machine will be able to pump out water.
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    #10 18896506
    ta_tar
    Level 41  
    Posts: 6438
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    And just to ask "where do you want to screw it to your siphon?". Give a picture of the entire siphon.
  • #11 18896679
    inka0207
    Level 5  
    Posts: 13
    Rate: 14
    The whole siphon and in the circle the place where I thought to connect the cone and the drain.

    Connecting the washing machine to the sink - how to connect properly?
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    #12 18896689
    Kenworth 18
    Level 43  
    Posts: 10999
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    Rate: 3660
    Without detailed several photos can not advise as already mentioned by colleague @ta_tar.
    The inlet hose is not a problem because you can buy longer ones, but the drain hose must be connected to the original one because its replacement with a longer one already involves interference with the washing machine.Now the question is whether it is about connecting a new washing machine or one that no longer has a warranty?
    The maximum length of the drain hose should not exceed 5m.

    Added after 12 [minutes]:

    Without detailed several photos can not advise as already mentioned by colleague @ta_tar.
    The inlet hose is not a problem because you can buy longer ones, but the drain hose must be connected to the original one because replacing it with a longer one already involves interference with the washing machine.Now the question arises whether it is about connecting a new washing machine or one that no longer has a warranty?
    The maximum length of the drain hose should not exceed 5m.
    After the attached photo by the author of the topic, however, you can safely use this siphon: https://lazienkidybel.pl/httppolsyfon-do-umyw...-odprowadzeniem-pralki-viega-5727pl-p-95.html
    Under the place indicated in the photo, it is impossible to connect the elbow with the drain because it is only a blinded place from which the rod for adjusting the height of the plug from the sink drain should come out.
    Save only the accordion hose from the old siphon and apply it to the new siphon if there would be a problem with adjusting the height of the new siphon.
  • #13 18907929
    inka0207
    Level 5  
    Posts: 13
    Rate: 14
    Or does anyone have any idea how this can be uncoupled?
    Connecting the washing machine to the sink - how to connect properly? .
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    #14 18907947
    dufek
    Level 32  
    Posts: 2050
    Help: 175
    Rate: 405
    inka0207 wrote:
    Does anyone have any idea how it can be unbolted?

    With a wrench, turning to the left.
    For the connection of the washing machine, install a proper siphon under the sink. because at the moment you do not have one.
    The corrugated tube replacing the siphon is not a good idea.
  • #15 18907984
    inka0207
    Level 5  
    Posts: 13
    Rate: 14
    I was more concerned with what I could pacify it with so that nothing would break.
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    #16 18907989
    dufek
    Level 32  
    Posts: 2050
    Help: 175
    Rate: 405
    Do you own a burner?
  • #17 18907998
    inka0207
    Level 5  
    Posts: 13
    Rate: 14
    Unfortunately, no.
    As a possibility, can you buy some tee and attach directly to this old element? Will the ends not fit?
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    #18 18908064
    wojtek1234321
    Level 36  
    Posts: 3553
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    dufek wrote:
    Do you have a burner?
    inka0207 wrote:
    Unfortunately, no.
    A burner like this is an inexpensive and generally available affair...

    https://allegro.pl/listing?string=palnik%20ga...%20i%20ogr%C3%B3d%20-%20Narz%C4%99dzia%20-%20*Palniki%20gazowe&gclid=Cj0KCQjw7sz6BRDYARIsAPHzrNJqTQR56XJSDDWq9N-y4Q8sC4Z1OcEUw1-pncw6q_ko-SyR1UzKhnQaArhAEALw_wcB&order=qd&bmatch=baseline-product-eyesa2-engag-dict45-hou-1-2-0903
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    #19 18908106
    Kenworth 18
    Level 43  
    Posts: 10999
    Help: 2387
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    Let you borrow this type of wrench: https://roboczebhp.pl/pl/p/KLUCZ-DO-RUR-SZWEDZKI-S-1%2C5-CRV/2595 from some neighbor and the valve must let go, but pull sensitively. The old valve will be replaced by a new one anyway. For the installation of the new one, please get Teflon tape or the so-called "packing material". No tee, etc. can be used. You need to unscrew the old valve and screw in the new one. Maybe someone from friends would help with the work.
  • #20 19045437
    inka0207
    Level 5  
    Posts: 13
    Rate: 14
    After purchasing a large wrench and additional hoses, the problem was solved.

Topic summary

✨ The discussion revolves around the proper connection of a washing machine to a sink, addressing several key points: the feasibility of extending hoses, the use of an angle valve for water supply, and the appropriate siphon for drainage. Users suggest that hoses can be extended using a nipple and additional hose, and recommend specific siphon models that accommodate washing machine connections. Concerns are raised about the height of the drain and the compatibility of existing components. The maximum length for the drain hose is noted to be 5 meters, and users emphasize the importance of following the washing machine's manual for proper installation. The conversation also touches on the need for tools and materials for installation, including wrenches and Teflon tape.
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FAQ

TL;DR: Max drain hose length is 5 m; "The maximum length of the drain hose should not exceed 5m." Fit a combo valve and a siphon with a washer outlet, then route the hose per the manual. [Elektroda, Kenworth 18, post #18896689]

Why it matters: For renters and DIYers fitting a washer under a sink, this FAQ prevents leaks, backflow, and warranty headaches.

Quick Facts

What’s the best way to connect a washing machine under a sink?

Use a combo angle valve for the cold supply. Connect the washer hose and the faucet hose to it. Replace or fit the sink siphon with a model that has a washing-machine spigot. Route the drain hose as the washer manual specifies. This setup keeps the installation compact and serviceable. [Elektroda, Kenworth 18, post #18895763]

Can I extend hoses if they’re too short?

Yes. Use a nipple/coupler and an extra hose to extend. Tighten clamps firmly. Check for leaks under pressure. Keep bends gentle to avoid kinks. [Elektroda, ewoo, post #18895748]

What’s the maximum safe length for the drain hose?

Keep total drain hose length within 5 m. Longer runs risk drainage problems. "The maximum length of the drain hose should not exceed 5m." [Elektroda, Kenworth 18, post #18896689]

How should I route the drain hose to avoid siphoning or backflow?

Follow the washer manual for height and high-loop placement. Keep the hose secured. Avoid laying it flat on the floor. "Remember to arrange the drain hose according to the advice in the manual." [Elektroda, Kenworth 18, post #18895763]

Which valve lets me feed both the faucet and the washer from one cold feed?

Install a kombi angle valve. It lets you connect both the washer hose and the faucet supply hose. This simplifies supply routing in tight cabinets. [Elektroda, Kenworth 18, post #18895763]

How do I connect the drain to the sink trap?

Use a sink siphon with an integrated washing-machine spigot. If your basin has a pop-up stopper, choose an FI32 model with a washer outlet, like a 2047-type. Fit the drain hose to the spigot with a clamp. [Elektroda, Kenworth 18, post #18895941]

What if the wall drain is too high and the new siphon won’t fit?

A high wall drain can prevent a standard siphon from aligning. Measure clearances and take full photos before buying parts. You may need a different siphon geometry. [Elektroda, ta_tar, post #18895955]

Can I connect the washer drain to the small blanked hole near the pop-up rod?

No. That hole is a blank for the pop-up waste rod, not a drain connection. Use a siphon with a dedicated washing-machine spigot instead. [Elektroda, Kenworth 18, post #18896689]

How do I loosen and replace a stuck angle valve safely?

  1. Borrow a Swedish pipe wrench (S‑1.5) and grip the valve body.
  2. Support the pipe, then turn counter‑clockwise with steady force.
  3. Install the new valve using PTFE tape or packing on threads. Avoid overtightening. [Elektroda, Kenworth 18, post #18908106]

Can I just add a tee to the old valve instead of replacing it?

No. Unscrew the old valve and fit the correct kombi valve. "No tee, etc. can be used." Use PTFE tape or packing when installing. [Elektroda, Kenworth 18, post #18908106]

Is a corrugated tube an acceptable siphon under a sink?

No. Install a proper under-sink siphon. "The corrugated tube replacing the siphon is not a good idea." This improves reliability and safety. [Elektroda, dufek, post #18907947]

Should I replace the original drain hose with a longer one on a new washer?

Avoid replacing the original drain hose on a new or warrantied washer. Connect extensions to the original hose instead. That avoids interference with the machine internals. [Elektroda, Kenworth 18, post #18896689]
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