How & Why with DTI
How & Why with DTI
Understanding Sewer Nozzle Spray Angle
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Choosing the right sewer cleaning nozzle for your job can be tough.
In today’s episode of How & Why with DTI Podcast, we break down different spray angles of sewer cleaning nozzles, as well as their overall purpose and specific applications.
Hey everyone, welcome to another exciting episode of How am I with DTI. Today we're going to cover the topic of sewer nozzles and spray angle. What is the spray angle and how does it help you and what do you need to know? Ed when we talk about spray angle, give us some info on what we're actually talking about and what the benefit of knowing what the spray angle is.
Unknown Speaker :Well let's take a few nozzles and take a look at different spray angles for different tools and different applications. keep something in mind as we're reviewing these nozzles. These are all one inch we talked about the thread size and the end of the nozzle measured in national pipe thread or NPT the tooling the configuration. They're available anywhere from one inch to inch and a half size. And again, larger the size the more gallons per minute which will be another discussion Mike you asked about spray, let me use one of these barbecue Spears or several of them to give everybody an idea of what we mean by spraying on the inserts, whether they come out of the back of the tool or they come out of the side of the tool are going to come out at a specific angle. And that angle actually accomplishes several different things. Or again, we'll use this fabric your skirt to show some of the different angles I'm going to inserted into the surface. And here what we have as a 30 degree jet. Shooting straight out of the back of the tool would be zero. coming straight out of the side, which usually only happens on rotating nozzles will be 90 degrees. The orifice next to it is at 10 degrees so you can get the concept of the difference between 10 and 30 degrees. This particular tool has 10 30 10 30 all the way around the tool. This is done for cleaning and thrust, both, let's talk a little bit about why 10, why 30 wide 45 degree and we'll look at some of the rotating nozzles for 45 degrees, there's a couple 45 degree ones on this one 10 degree, lower the number. The more forward thrust you're going to get out of the tool. The lower the number or smaller the degree, the further you're going to push material behind the tool. The lower the number, the longer it's going to take the water to get from the tool or the nozzle to the actual wall of the pipe. So you can get that degree down to zero if you want just not going to clean the wall the pipe very well but it will give you a lot of forward thrust and move a lot of material behind. The more we increased the spray pattern as we have here on a 30 degree. The shorter the distance from the tool to nozzle to the wall the pipe in the better cleaning it does. Now you're going to lose some thrust with that or forward push out of the nozzle, you're going to lose a little rear ward movement of the material itself, the wider we get with the spray pattern, the less it can push material behind the nozzle. But the better it cleans the pipe, Mike let me have that rotator that you have there. And let's take a look. When we talk about different degrees, this particular tool these don't rotate in the back. This particular tool is 20 degree jetting coming out of the back of the tool, but coming out of the head itself
Unknown Speaker :are 90 degree jets
Unknown Speaker :also in that same head, are 45 degree jets you're able to see the different angles getting the water from the tool with the rotating head to the wall pipe in the shortest distance which 90 degrees is going to be your answer for the shortest distance the better the cleaning tool. We lose forward thrust or in fact many degrees with this all forward thrust with this one. but cleaning ability cutting the bill Grease cutting ability. Some people are using these rotators and control spin rotators and we'll talk about those in another episode. These controlled spin rotators for cutting roots again getting the water from the tool to the wall the pipe in the shortest distance possible is what's gonna do your cleaning, getting the water from the nozzle. straightest you can get behind the tool say 10 degree which is normally a pretty low degree out of standard cleaning nozzle although you can get zero degree nozzles out there you can get seven degree nozzles ten is again, usually on the low side. Each one of these tools is going to be set up a little different. This guy over here has 45 degree jetting. Four of them, it rotates, and you have four 45 degree and in the rear of the nozzle, there's 15 degree nozzle orifices coming out of the back of this tool, three of them into air for propulsion four of them for cutting for getting to the wall of the pipe and cutting material. Again spray angle will vary from nozzle to nozzle but understanding what it's there for, again, lower degree
Unknown Speaker :more forward thrust higher degree better cleaning.
Unknown Speaker :So as you kind of told about like the science of why the different degrees of spraying angle and degrees on that, what would the operators out there who are wondering Okay, what nozzle Do I need for my certain applications touch a little bit on spray angle and how it relates to the type of material and the size of pipe you are in?
Unknown Speaker :Well, there's two style of nozzles who are looking at whether it rotates in a fast rotation or a controlled spin which is what we have here saying the Bulldog or warthog some of you guys are using out there or we have fixed jetting, like we have here. Basic cleaning tools I'm gonna want to move the material or long distance of the pipe and I'm going to want to remove the material from the wall the pipe The downside to this tool is that if you get it into a grease application it'll pull big logs of grease and big sheets of grease back hard to vacuum up with your truck hard to remove from the pipe. The rotating nozzles will cut that grease up until almost the popcorn consistency in order to bring it out of the pipe easier floats in the stream better and it's easier to remove with less effort on the operator themselves. Again each type of rotator this happens to have six rear jets and it has six jets on the head for rotational cleaning. Each person is gonna they're going to want something a little different each each one of our customers out there looks at different some people are Craftsmen and some people are MAC and some people are Snap-On people. Everybody likes a little different tool and they have a reason for liking the suggestion. And what we really get into here is five basic things we use the tool for we use for general maintenance cleaning, we use a for blockages which I don't have a penetrating nozzle sitting here on the table but it's pointy or chisel shaped, we're going to cut grease with it we are going to cut roots with it which whether that's a rotating nozzle with spray which which does work takes a little extra time. Or as you're going to hear in future podcasts, root saws and chain cutters will be a separate podcast you get into cutting of roots and then hard deposits which is mineral heads, milling heads for mineral deposits. These are some of the different basic applications that we get into So, standard cleaning nozzles I like the combination attendant 30 move the material get some forward thrust out of the nozzle 30 degree jetting the stick into material off the wall grease applications I would prefer a rotator cutting applications I would for cutting tool roots, or chain cutter and then milling heads or carbon tiped milling heads as some of us don't see those application very often. But those are the five bits of applications We'll see.
Unknown Speaker :We're done with dish Can you find some shrimp to put on one of these
Unknown Speaker :one thing I do want to comment on that is outside of the shrimp is you know, there is not one nozzle that will do everything you need to do. I had a lot of operators we talked to they have their go to nozzle their their standard nozzle, a lot of people like a control rotator for a majority of what they're doing because with all the different degree angles it has on there, it's giving you 90 degrees, it's giving you the 45 to the cut the clean right at the pipe, but it still gives you enough thrust to get it up the pipe as you need. The grenade is is a standard dual degree nozzle that just a cleaning application. just basic, soot some basic gunk in the pipe that run that up there. That'll do a good job for you. But the lesson the you have to understand is is knowing the spray angle makes a big difference. If you've got a steep steep climb, you've got to make it and there's a lot of grease in there, you're going to want more of those 10 degrees to push that up the pipe rather than the 90 or the 45 is going to do more of the cleaning. So knowing what you're getting into and knowing the degree of the nozzle and how that affects you is really what's going to help you when you're out in the field. There's a million different things that you ran into in the field out over the years. I know there has happened and you'll see that out there. But what we want to give you is the basis of what the spray angle means and what it's going to do for you. So when you're out there, and you know the situation you have, you can pick the best tool that's going to do the job in the most efficient way possible.
Unknown Speaker :Look, guys, let's look at the nozzles as a toolbox. crescent wrench can be used as a hammer. And there's not the right way to use it crescent wrench and fit any nut and bolt out there. But it's still meant to take the tires and wheels off your car very well. We see a lot of our customers using one nozzle for all applications. They believe it works. Let's face it, folks, most of us can't see what you're doing to begin with because you're doing it blind. You insert the nozzle into the pipe and you run it. You're not sure what it's doing to televise the line and with the advent of tovah televising equipment that we see out there today. It's a lot easier to tell what these tools do. Remember, not one tool does all jobs. You can chop a tree down with a hammer, I think you'd be better off with a chainsaw different application a little more expensive, but the right tool for the right application, increasing productivity, shortening the effort and the time you need to do the job and making yourself more efficient.
Unknown Speaker :Guys, like always any questions, feel free to email us or contact us via the chat functions of any of the ones who get our email as dti@dohenycompany.com. Let us know what questions you might have or what topics you want to learn from this. If there's any, anything that we haven't done yet that you'd like to see. Let us know we're here to serve you guys and give you the tools you need to do your job. If you want to see more of our videos, don't don't forget to like them. Subscribe on wherever you get your podcasts. And stay tuned for next time until we all learn something new.
Unknown Speaker :Thanks Have a good day, folks. Transcribed by https://otter.ai