Class “A” and Class “B” Water Jetting Systems

02/28/2022

Class “A” and Class “B” Water Jetting Systems

Water jetting systems are classified with either “A” or “B” to represent the pressure and flow bar (bar litres per minute L/pm) of the pump. Class A and Class B pumps require different training to operate the pump equipment. Here, we unpack the difference between Class A and Class B pumps and explain what you need to know about the type of water jetting system you have or need.

What’s a water jetting system?

A water jetting system (also known as a water jet/waterjet) is an important piece of equipment that produces a stream of pressurised water. Water jets can be used for extreme cleaning where high pressure is needed i.e. to clean boilers, re-heaters, to remove live and cured paint, for tank and reactor cleaning and many other needs. Water jet systems can also be used for cutting softer materials i.e. food, cloth, foam or wood or harder materials in particular circumstances. Due to the impressive power of the water jetting systems, using the pump equipment is categorised as high-risk work and therefore safety precautions need to be followed.

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What’s the difference between Class “A” and Class “B” water jetting systems?

The difference between Class A and Class B water jetting systems is that Class A systems have a maximum output pressure between 800 – 5600 bar litres per minute whereas the Class B systems have a minimum output pressure of 5600 bar litres per minute or over. If the water jetting system produces output pressure below 800 bar litres per minute then it’s categorised as a low pressure pump.

How do you know if I have a Class “A” or Class “B” Pump?

To find out what kind of water jetting system you have, you’ll need to refer to the compliance plate on your pump equipment and find the pressure bar and the flow rate. The majority of pumps have PSI or kPa pressures which will need to be converted to litres per minute. Once converted, the pressure and flow need to be calculated to return a bar L/pm value to determine the class.

Do I need training?

Regardless of whether you have a Class A or Class B pump, it’s recommended that the team complete HPWJ training. Through training, you’ll learn how to operate your equipment effectively and avoid risks.

Note: for low pressure pumps (pump equipment with an output pressure below 800 bar litres per minute) no training is required.

For more information

If you’re unsure how to use your equipment or which Class to choose for your water jetting system, talk with our team here at Pumps Australia. Our team are experts in pump equipment and systems, we’ll ensure you have everything you need to complete the job efficiently, effectively and safely. Contact us today.

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Class “A” and Class “B” Water Jetting Systems