Plumbing Installation: Is a Siphon Required for Separate Dishwasher and Washing Machine Connections?

I bring out a new plumbing installation. And I would like to put the dishwasher on a separate plumbing connection than the sink. And I have a question: Do I have to put a siphon somewhere when doing a separate sewage approach to the dishwasher or let the hose run through the siphon? Or maybe the dishwasher already has a built-in one in its design ...

A similar question about the washing machine: is a siphon needed here too?


I would like to achieve the effect that I immediately plug the drain hose into the sewage hole in the wall, without the use of a sink, shell, etc.

Is a 50 cm drain for a dishwasher sufficient?

Hello !!
I am not an expert in these matters, but I have a dishwasher and washing machine connected without any siphons, directly into the sewage system for a few years and nothing is happening, the drain at a height of 50 cm will be ok I also have something like that

These dishwasher and washing machine siphons cost about PLN 14 / piece, I gave them, it's OK. The seller in the supermarket could not answer whether it is possible without, of course, it is "only" about smells ...

I have a dishwasher and a washing machine at home connected directly to the sewage pipes, without any siphons and no "smells" are felt
greetings

It should definitely apply.
And it looks like this:

If the hose is tightly connected to the sewage system, there is no need to use a siphon, as the siphons are fitted as standard in washing machines and dishwashers. If someone does not believe it, please "blow" the drain hose, then it will bubble in the device
I recommend external siphons because they facilitate tightness of the installation and look nice On the one hand, it fits into the sewage system and on the other hand, it fits into the drain hose.

ROBSON33 wrote:

It should definitely apply.

Can you know for what purpose?
Because because of these clogging crap, there are only problems and the water in the hose always remains because the pump will not throw everything away

and the washing machine and dishwasher have water in the hose (which creates a natural siphon)
I see no reason to make an additional siphon or buy such a device as you can see above in the dishwasher, nothing is happening with it, but in the washing machine they get clogged and you have to clean them from time to time ...

Hello, today I was cleaning the siphon from the dishwasher - it caused me a lot of worry (I already thought that the pump had failed in the new dishwasher) and I decided to throw it out. Yes, the fact is that there is always water in the hoses, so why the siphon! Unless someone earned on it.

Watching my siphon, I have one more argument not to install it - there is a plunger in the siphon which is pressed by a spring - it is supposed to plug the drain when it is not in use. The dishwasher pump must not only pump out the water, but also deliver enough pressure to make the plunger go up. In my opinion, the resistance (by the spring after the plunger) is quite important. This places additional stress on the pump.

After all, the drain hose of e.g. a dishwasher is quite long, and the drain is higher (e.g. 50 cm from the floor), and there is water in it. There is no need to add additional resistance, at most the pump will go sooner that's my opinion.

However, if an extremely cautious individual is found and insists on such a siphon, let him choose one with a ball inside, in accordance with this text http://www.sprawdzonewpraktyce.pl/2015/08/syfon-pralkowy-przeczytaj-zanim-kupisz -zby-not-step-in-the-swamp /

Hello
The washing machine and dishwasher in their design have a siphon in the washing machine - it is a drain pump, in the dishwasher there is a check valve. The use of various inventions, i.e. siphons and special connections, makes no sense and later causes problems with the water drainage.

I am looking and looking and I came across this topic.

Currently, I have a washing machine hose pressed through a rubber reduction to a fi 32 pipe. It looks poor and sticks somehow. And the emphasis on "somehow".

I was looking for something on the Internet for something like a spigot with a pipe, e.g. fi 32. The only thing I found was the spigots with a pipe as part of the siphon from the sink and siphons for washing machines (spigot inlet, outlet fi 32)

Can I use this siphon by additionally pulling the ball out of it? In addition, I would secure the hose with a clamp.

lukiiiii wrote:

I was looking for something on the net such as a connector with a pipe, e.g. fi 32.

After all, it is in the photo in the 5th post.

lukiiiii wrote:

pulling the ball out of it

Why?

lukiiiii wrote:

In addition, I would secure the hose with a clamp.

It is not necessary.

Zibi is right about it. And when there is a siphon like me, the photo is to throw away the ball and the spring.

lukiiiii wrote:

Can I use this siphon by additionally pulling the ball out of it?

First, you have to understand what a siphon actually is. Well, a siphon is any arbitrary U-shaped tube (the so-called U-tube), on the bottom of which a little water rests, so that this water seals (completely clogs) the tube, constituting a barrier for gases trying to pass through the tube by itself . It is possible for gas to overcome such a water barrier only when the gas begins to be pumped under pressure. And the gases from the septic tank are not under pressure, so standing water in such a U-tube will effectively stop them. I scratched my knee with a drawing of how the siphon works in the fittings.

Second, if you remove a ball from a ball trap, it is no longer a trap. In this case, it is this ball that provides the gas blockage. If you are removing the ball, you might as well remove the siphon from the installation, because without the ball it is just a nothing-doing piece of plastic.

Returning to the drain hose of the washing machine - if we arrange it (in accordance with the washing machine manual), in these plastic latches mounted on the back wall of the washing machine, we get the so-called The U-tube, in which the water will stand, is the siphon. So you don't need an additional siphon. You just need to stiffen the obtained u-tube siphon with an additional plastic arch and it's ready.

Another example - stagnant water in a toilet bowl is also an "u-tube" siphon.

And if any of you rush fruit wine at home, this glass tube that is put on the bottle is also a siphon working on the principle of an u-tube - it prevents the fermenting wine from getting oxygen into the cylinder cavity, and allows it to escape from the bottle. cylinder of excess gases (by-products of fermentation), when the pressure in the cylinder is higher than the atmospheric pressure.

I hope I helped.

@Donpedro_z_Otwocka do you have to bend the snake as much as you drew above? Could it be like below? Can the pump blow water out of the hose as below, and you have to do it at least like the red dotted line?

You do not have to twist the hose, it can be as you drew, but remember about the height of the hose in the drain at a minimum height of 60 cm from the level of the washing machine