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Unblock a Kranzle Vario-Jet Nozzle

Got flow, but no pressure from your Vario nozzle? Let's fix it

 
 
Josh Lee, the Original Josh, walks us through unblocking the high pressure orifice of a Kränzle Vario-Jet nozzle.  Below is the transcript.

Unblock Vario Nozzle Video Transcript

Kränzle Pressure washer perfection.

Josh Lee:
Hey everybody. This is the original Josh back again with KränzleUSA. And today we're going to take a look at the Kränzle Vario nozzle. This nozzle comes with the K 1122 TS as well as another, a few other models built by Kränzle and it is a multipurpose nozzle. The nozzle has a couple of different positions. We have the high pressure function, which is where the nozzle is pulled back all the way. Whenever we want to actuate the chemical injector, we pull out on the nozzle body exposing the brass connection at the lance. And that's what puts us into the low pressure position in either one of those positions, we can also turn the outer collar of the nozzle to change the pattern from a straight stream to a fan spray. So a common symptom that we have with some of the electric pressure washers is that you will experience flow coming from the pressure washer nozzle but not in high pressure.

And it is natural for one to assume that that's because the machine is not working, but in most cases it's the nozzle instead of the pressure washer, that's malfunctioning. In most cases it is the high pressure orifice, which is inside the nozzle body that gets clogged with debris, whether it be sand or bugs or mold or what have you. So we want to take a look at how to open up a nozzle and clear out that clog and replace the nozzle orifice if we have to. So here are the tools that we're going to need. You're going to need a 22 millimetre wrench, a 14 millimetre wrench, and an 8 millimetre wrench. The last tool that we're going to need would either be a hat pin or a paperclip.

So we start with the nozzle. You're going to grip the outer body of the outer black bottle, that body of the nozzle firmly, as well as the colored rear collar of the nozzle. And we're going to twist it hard enough to be able to disengage the locking pins from the outer casing. Once you've pulled this off, the fan assembly that creates the, or the fin assembly that creates the fan is going to be on the nozzle body or it could also be up in the collar of the nozzle. But ultimately we're going to remove this so that we can expose the 14 millimetre hex and the 22 millimetre hex so that we can disassemble the nozzle. So once we have our nozzle exposed and the plastic casings off the outside, the 14 millimetre wrench, we'll go on to the end of the nozzle assembly.

If you don't have metric 9/16 is acceptable for this size on the back end, we're using our 22 millimetre. Or if you have standard wrenches on 7/8 will work. So we break those loose, they shouldn't be too, too tight. And once we've broken loose, we can use the wrench and should be able to remove the outer brass nozzle tube that has our low pressure orifice. And if you see this, this is a very large orifice for a pressure washer spray nozzle. So this is going to produce less restriction, which is what causes the chemical injector to begin to siphon.

Underneath that nozzle tube we have our high pressure orifice. So right here we have the base of the nozzle body and then right here is our high pressure orifice. That's what we're going to use the 8 millimetre wrench for. And if, once again if you have standard that's a 15 or 5/16 wrench that will remove that. So this one should be even easier to remove, shouldn't be super duper tight. Once you snap it loose, you should be able to remove it by hand. And as you can see, this high pressure orifice, actually you can't even see it.

Well..High pressure orifice has a really, really small opening. And that restriction right there is what gives us our high pressure. It's right here in the tip and it is only big enough for our paperclip or our hat pin. So like I said, the high pressure nozzle orifice is where our clog is going to be found. You'll typically be able to see it here in the on the threaded end of the nozzle assembly. And what we want to do is we want to free that blockage from the nozzle. So if we take our paperclip or had pin, we can take and carefully push through

Cleaning out the blockage. So once you've pushed your blockage through, you can either rinse it with some water or blow it out with some compressed air. Just give it a and get it nice and clear in some of the older nozzles, you also have to be careful not to push that high pressure orifice out. They used to press them in and it was a separate component, so be cautious of that when you push your blockage through. Make sure that you're not losing any additional brass pieces, but the modern nozzle is all one piece and it should be pretty easy to clear. Once we've got that clean, we can begin the process of reassembling our Vario nozzle. So we take the nozzle assembly, hand thread, the high pressure orifice back in. Now we'll use our 8 millimetre 5/16 just to give it a little snug. And that's all the tight that it has to be. We don't, we don't want to over-tighten the nozzle. Then we'll take the low pressure nozzle tube, thread it back onto the nozzle base. Once again, this doesn't have to be super tight. It's being sealed by the O-ring so it doesn't need any Teflon tape. That's all it needs.

Remove the nozzle fin assembly to the tip of the Vario base, and then we'll slide the outer casing back on. And now our nozzles back together, we can go ahead and hook it back up to our pressure washer. A good way to prevent the high pressure orifice from getting clogged. Always flush out your accessories from your pressure washer before you put your high pressure nozzle on whether it be this style or flat tip. In many setups, you may have it set up on a wall where it seems like it could never get anything in it, but you just never know. So it's wise to go ahead and flush out your lines before you hook up your high pressure orifice. But now we've got to put back together. We can go ahead and get back to work. So thank you for joining me today. Be sure to like and subscribe and don't forget, Kränzle better than cheap

Kränzle USA pressure washer perfection!

*Vario Nozzles can be rebuilt.