A Guide to Drain Jetting Nozzles

INTRODUCTION

Rioned supplies a wide range of nozzles for every type of machine. Our extensive range of jetting nozzles clears all types of blockage in drains up to 650mm.

There are two main categories of nozzles; radial jetting nozzles are optimized for unblocking of drains, while rotating nozzles are designed for cleaning. The static jet streams of radial nozzles have maximum traction power due to their rear-facing nozzles. The jets in rotating jetting nozzles have a 360° wide reach to clean the entire pipe wall. They are often used to provide extra cleaning after unblocking a drain to prevent the formation of new blockages.

JETTING NOZZLES 101

Drain cleaning tasks require different nozzles and jetting techniques. Here are five key pointers.

1. Understanding the Conditions for Jetting: 

As a starting point, it’s important to understand the conditions for jetting, including the pipe diameter, length, structural material and the type of deposits present, such as F.O.G. (Fats, oil and grease).

2. Importance of Pressure and Flow in Jetting:

The pressure and flow of the jetter is also key. As a general ~rule, high pressure (PSI) is better for clearing blockages, whereas high flow (GPM) is preferable for moving material. While high-pressure and a low flow rate is most effective for small drain cleaning, high-flow machines are better suited for use on larger-diameter pipes.

3. Determining the Jet Hole Size in a Nozzle: 

To determine the ideal size for the jet holes in a nozzle, the pressure and flow of the jetting equipment, along with the length and diameter of the hose, is required. Reputable nozzle sellers will require this information about your jetting 

equipment to configure the correct nozzle.

4. Trajectory and Angle of Jets: 

The trajectory and angle of the jets is important in nozzle selection. Jet angles range from 0° to 45°, with a wider jet trajectory best suited to cleaning pipe walls. Narrower jets primarily offer rear thrust and forward force, useful in the efficient clearing of obstacles. On some jobs, more than one nozzle may be needed, though many modern nozzles have angled jets that perform multiple functions. 

5. Choosing the Right Nozzle: 

Selecting the right nozzle is a critical step in ensuring the efficiency, safety, and longevity of the jetting system. The nozzle is the point of contact between the water and the obstruction, so choosing the right nozzle is essential to remove the blockage and effectively clean the pipes. Taking into account the pressure and flow of the jetting equipment, the length and diameter of the hose, and the type of fluid or chemical being used, will ensure that the nozzle is suitable and will help to improve the overall work efficiency.

TYPES OF SEWER JETTING NOZZLES

The static jet streams of radial nozzles have maximum traction power due to their rear-facing nozzles, whilst the jets in rotating jetting nozzles have a 360° wide reach to clean the entire pipe wall. They are often used to do extra cleaning after unblocking a drain to prevent the forming of new blockages. There are speciality nozzles to clear drains from different contaminates like F.O.G. (Fat, Oil, Grease), soap or urine scale. Others are equipped with chains or steel wires to handle the most difficult jobs like the descaling of lime, cement or concrete, hard grease and tree roots.