AUSJET/ADCVA Newsletter

October 2025

Chairperson's Report

Welcome to the October 2025 edition of the AUSJET / ADCVA newsletter — our first since the election of the new Board.

I am honoured to have been re-elected as Chair of AUSJET / ADCVA, following the resignation of Lance McKay, who stepped down after leaving his position with a member organisation. I would like to extend my sincere thanks to Lance for his valuable contribution both as a Board Member and as Chair. His leadership and innovative approach were instrumental in driving several key initiatives, including the highly successful AUSJET Conference.

I would also like to take this opportunity to acknowledge and thank our outgoing Board Members:

Peter Nicholas (Veolia)
Peter retired from Veolia in March 2024, and his contribution to AUSJET / ADCVA cannot be overstated. A quiet achiever, Peter played a leading role in developing and managing the Safety Forum — a major new initiative for our association. His leadership and experience in safety have laid a strong foundation for the forum’s continued success.

Andrew Gladman (Bucher)
Andrew joined the Board following Rod Purtill and, while not always visible in public forums, was a dedicated contributor behind the scenes. We thank Andrew for his commitment and service.

As an association, we take pride in recognising those who have made a significant and lasting contribution over time. I would like to congratulate Gerry Murphy and Lance McKay on being awarded Honorary Membership, acknowledging their seven years of dedicated service on the Board.

With the departure of three Board Members, we’ve had the opportunity to bring fresh perspectives and new energy into our leadership team. I’m pleased to welcome the following industry professionals to the Board of Directors — each bringing valuable skills and experience that will strengthen our association moving forward:

Lorraine Duffy – Hitech
Michael Pardoen – Veolia
Peter Bradford – Aquaprep
Mick Darwen - Innovative Industrial Solutions

With the new Board now in place, we are reviewing our strategic direction and will provide updates in the coming months on several key initiatives, including:

AS4233 Review – Project proposal submitted to Standards Australia, currently in consultation to initiate the formal review process.
Cert II, III and IV in Industrial Services – Progress continues in collaboration with the Manufacturing Alliance, with a project expected to commence soon.
Membership App and New Website – Both currently under investigation to enhance member engagement and accessibility.
Industry Magazine – Planning continues in partnership with Befinden Media.

Looking ahead, preparations are well underway for AUSJET26, which will be held in Sydney on 28–29 October 2026 at the Sydney Showgrounds. The event is shaping up to be our biggest yet, with strong early bookings and a dedicated demonstration arena that will take our live displays to the next level. Exhibitors will have the flexibility to run demonstrations throughout the event, alongside scheduled sessions — a major step forward for our industry showcase.

I would also like to acknowledge and thank our Platinum Sponsors — DEN-JET Australia and WOMA Australia — for their continued support. Their commitment is invaluable, and we encourage other members to consider sponsorship opportunities, which come with a range of benefits. For more information, please contact Gabe at support@ausjetinc.com.au.

I look forward to catching up with everyone at our next meeting and continuing to build on the great momentum within our industry.

Warm regards,
Peter Jones
Chair – AUSJET / ADCVA

DEN-JET Australia - Platinum Member and Sponsor of AUSJET / ADCVA

EXTENSIVE EXPERIENCE | EFFECTIVE SOLUTIONS | CONSISTENT DELIVERY

DEN-JET is a leading supplier of Water Blasters, Water Jetting Accessories, Safety Equipment, Spare Parts, and Rental machines. The OEM business manufactures High-Pressure Water Blasting Machines and Accessories for many Applications. DEN-JET has a reputation for Specialist Knowledge, Quality Products with a Safety Focus, Competitive Prices, and Excellence in Customer Service. DEN-JET are resellers for TST PPE and Stoneage tools.

DEN-JET was thrilled to have its new CDT200-2500 trailer mounted pump available for the Torrens to Darlington Tunnel Alliance Project for the Government of South Australia. The Water Blaster operates at 36Kpsi @ 25 Lpm and is trailer mounted for ease of travel. DEN-JET offers HP /UHP Pumps, accessories and PPE for sale and rental for both onshore and offshore use. We can help configure the equipment you need for a safe and successful job with the knowledge of working with the best products and expertise that your project demands.

DEN-JET is delighted to partner with Asset Training for the delivery of High-Pressure Water Jetting Training. If you would like to reserve a place in the last course for the year held in Adelaide please get in touch chris.mccarthy@assettraining.com.au or call 1300 410 410 for further information.

MSMSS00018 - HP Operator 2-3 December 2025

MSMSS00017 - HP Assistant 4-5 December 2025

Best regards

DEN-JET Australia Pty Ltd

24-28 Bowyer Road, Wingfield SA 5013

E: au.sales@denjet.com

P: +61 439 118 776

W: www.denjet.com

WOMA Australia - Platinum Member and Sponsor of AUSJET / ADCVA

At WOMA (Australia) we understand that sustainable innovation is at the forefront of industrial progress.

It is why we developed the very successful WOMA 700ZWG

As energy costs continue to rise and environmental standards become more demanding, improving operational efficiency is key to long-term success and environmental and social governance (ESG) compliance.

WOMA 700ZWG is powerful, versatile and efficient in every situation. The EcoMaster D 550/700Z ZWG is controlled by an integrated intermediate gearbox in a power range from 50 to 500 kW. It covers the full range of high-pressure applications in the industry while optimising fuel consumption
and minimising wear and tear on all moving and pressure parts during the operation.

WOMA Australia Pty Ltd

16 Redemptora Road, Henderson, WA 6166

hpwater@woma.com.au

08 9434 6622

www.woma.com.au

AUSJET26 & LEW26

Call for Topics and Speakers – AUSJET26 Conference, Sydney | October 2026

Planning is now underway for AUSJET26, the premier event for Australia’s high pressure water jetting, drain cleaning, vacuum loading, non-destructive digging, and liquid waste management industries.

We’re calling for presenters and topic submissions from across the sector to help shape a dynamic and informative conference program. This is a unique opportunity to share your experience, innovations, and insights with a national audience of industry professionals, regulators, and equipment specialists.

Safety Snippets

Pressure Loss - High Pressure Water Jetting (HPWJ)

High pressure water jetting systems are extremely inefficient systems that have multiple factors that affect the pressure and flow before the water jet exits the nozzle. HPWJ Operators will set the RPM to get the required pressure on the pressure gauge thinking that this is what they will achieve at the nozzle. Unfortunately, this is not the case in nearly all HPWJ set ups.

Pressure loss can be attributed to the following:

Restrictions of the water being forced through regulating devices and pressure valves
Loss through each joiner the water passes through
Further loss through the mechanisms of a footpedal or handgun
Length of the hose
Size of the hose This will also impact the flow of the pump
Nozzle efficiency

If an operator is unaware of these losses, it significantly impacts the performance of the pump and in some cases these losses can reduce the performance at the nozzle by over 50%.

Some examples of hose pressure loss are as follows

1. Pump Specifications - 1000bar @ 100lpm

Using 1 x 20m length of 12mm hose = 35.7bar pressure loss per 20m length
Using 5 x 20m lengths of 12mm hose = 178.3bar pressure loss over 100m length

With the length and size of the hose in the above equation we have lost nearly 18% of the pressure we started with.

Same pump specs as above
Using 1 x 10m length of 6mm flexlance = 570bar pressure loss over the 10m length
Using 1 x 20m length of 6mm flexlance = 1,142bar pressure loss over the 20m length

2. Pump Specifications = 1150bar @ 342lpm

Using 1 x 20m length of 20mm hose = 26.8bar pressure loss
Using 5 x 20m length of 20mm hose = 134bar pressure loss 13% of the systems pressure
Using 1 x 20m length of 12mm hose = 344.7bar pressure loss nearly 35% of the system pressure
Using 5 x 20m length of 12mm hose = 1,723bar pressure loss gone backwards

With the calculations above it is evident that hose size and length play an important role in maximising the efficiency of the HPWJ operation. When pipe and tube cleaning it is always important to use the largest diameter hose as possible to reduce the effects of pressure loss. A rule of thumb when cleaning small pipes or tubes is the nozzle is no bigger than 75% of the internal bore on the pipe being cleaned to minimise the risk of “Hydraulic Lock”. (Hydraulic lock is the term used when the pressurised cleaning water exceeds the space to exit the pipe and forms a hydraulic force that pushes the nozzle and hose assembly out of the pipe)

3. Nozzle Efficiency

Nozzle selection is also a critical factor in operational efficiency and different types of nozzles (although the same size) can have different operational capabilities. This is due to the design of the nozzle and the way the high-pressure water passes through the nozzle.

Some examples below (Hammelmann).

With the example above you can see that the nozzle sizes are the same diameter, but the flow rates differ due to the nozzle design. The difference between the “Type A” nozzle with a coefficient of 0,95 (95%) versus the “Type P” nozzle with a coefficient of 0,71 (71%) is 7.1 litres per minute. This also equates to a pressure loss of 0.05% for the “Type A” Nozzle and 29% for the “Type P” nozzle.

Note - This becomes extremely important when doing nozzle calculations for a gun to maintain a reaction force below 25.5kg. When doing these calculations, it is important to use the correct nozzle insert flow chart for the nozzle that is being used.

It is evident from the diagrams above that the “Type A” nozzle provides the water a smoother transition into the final orifice size in comparison to the “Type P” nozzle. The difference in the stream of high-pressure water can be visually detected with the “Type A” nozzle providing a longer solid core of high pressure than that of the “Type P” nozzle. The nozzles can be further enhanced in their performance by introducing a “Flow Straightener” directly behind the nozzle. These devices take the twist out of the water prior to it entering the nozzle and are normally fitted behind nozzles that are inserted into tank cleaning heads and rotator jets for guns.

4. Nozzle Wear

Nozzle wear is also a contributing factor to pressure loss - obviously the more the nozzle wears the more water it lets through, hence decreasing the pressure. Some nozzles will last a long time before their wear starts to influence the pressure, but others may wear in a matter of hours.

5. Incorrect Nozzle Selection

Selecting the wrong size nozzles can impact the task quality and cleaning efficiency and can impact the pump performance due to dumping of water creating heat and increasing maintenance and unnecessary fuel consumption. Too large a nozzle will not allow the pump to reach its maximum operating pressure.

Conclusion

From the above information it is evident that these systems are extremely inefficient, and hose and nozzle pressure loss are the two main factors but there are numerous others that will contribute to pressure loss. To complete any task effectively an operator must understand all these pressure losses and select the optimum hose size and nozzle type. What the pressure gauge is reading on the pump is never what is being achieved at the end of the nozzle.

This Safety Snippet was provided by a member.

Pressure loss may vary from pump manufacturer to another pump manufacturer and is dependent on the type of hose being used.

October is National Safe Work Month

Why is National Safe Work Month important?

Our latest data shows that in 2023, 200 workers in Australia were fatally injured at work and there were 139,000 workers’ compensation claims for serious injuries and illnesses.

While injury and fatality rates have fallen significantly over the last decade, the people and the stories behind these numbers remind us not to be complacent. No job should be unsafe, and no workplace death or injury is acceptable.

A safe and healthy workplace is a fundamental right. That’s why each year, in October, we recognise National Safe Work Month to raise awareness of WHS and take action to achieve our vision of safe and healthy work for all.

This year’s theme,

Safety: every job, every day, encourages all workplaces – regardless of occupation, industry, location, and size – to prioritise safety in their job every day.

Practicing safety: every job, every day means we can reduce the rate of fatalities, serious injuries and illnesses in our workplaces and ensure everyone gets home safely from work.

Throughout October take time to step through the risk management process – identify hazards, assess risks, control risks, and review controls – with practical resources and activities to set you up for safety in every job, every day during October and beyond.

Reporting Incidents

One of the responsibilities of being a member of AUSJET/ADCVA is to report all incidents.

It is important we communicate all incidents within our industry to prevent them from reoccurring and to improve industry safety.

All identifying information is kept strictly confidential. Incidents and near misses can be reported through our website safety/report-an-incident - or directly to our administrator support@ausjetinc.com.au.

Does anyone know of any incidents or safety alerts they would like to report?

Incident Alerts

Incident Alert 121: Incompatible Hose and Fittings

This is a repeat incident of incident 56 in 2014. AUSJET/ADCVA declare there has been no fault by either manufacturer. This alert is not a reflection on the quality of their hoses.

The mismatched fittings were assembled by a third party, which made an error due to how similar the fittings are. AUSJET/ADVCA believe the identification of the fitting is integral in communicating the cause of the incident, and have therefore mentioned brand names in this alert, considering it is a repeat near miss

Please go to the Incident Alerts page to see all incidents reported.

AUSJET/ADCVA Welcomes New Members

Direct Inject Pty Ltd

EXPERTS IN CONCRETE REPAIR, WATER STOPPING AND ROBOTIC HYDRO-DEMOLITION

Who We Are

Direct Inject is a New South Wales based specialist contractor providing expert projects across Australia

services in concrete remediation, polyurethane injection, and robotic hydro demolition. With a focus on innovation, safety, and precision, we deliver high-performance solutions tailored to the demands of civil, tunnelling, and infrastructure

Our operations are rapidly expanding nationwide, supporting Tier 1 and Tier 2 contractors, government entities, and infrastructure asset owners with reliable, cost-effective, and scalable services. Backed by a team of experienced professionals and industry-leading technology, Direct Inject is committed to delivering quality outcomes and long-term value on every project.

Our Commitment to Excellence

At Direct Inject, quality isn’t just a goal – It’s a verifiable standard we maintain through our comprehensive integrated Management Systems.

Our triple ISO certification demonstrates our unwavering commitment to excellence across every aspect of our operations, from project delivery to environmental responsibility and workplace safety.

To learn more about Direct Inject Pty Ltd, follow this link

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Plant Wash Australia

Founded by Leigh Marwick, a mining services specialist with over 20 years of experience.

Plant Wash Australia (PWA) was established in 2020 by Leigh Marwick after viewing the Mine Equipment Washer (MEW) at the Distributor’s yard. Leigh has been in the mining industry for 20 years and has been growing his family-owned and operated Hydraulic and Fire Suppression business since 2015.

Leigh immediately identified the safety, durability, versatility and the efficiency of the MEW and understood that it would fill a gap in the cleaning and maintenance industry in Western Australia.

Plant Wash Australia is only as good as its people, and we offer a highly skilled crew fully trained in EWP, WSAH, CSE and Class A and B High-Pressure Washers. Being a small family-owned and operated business, you are assured that you will be speaking with the owner when you call.

Equipment Washing

The Mine Equipment Washer (MEW) is built from the proven components and technology selected from the Vestergaard aircraft service vehicles. The MEW is designed to pioneer the industry with the safest innovative washing capabilities.

Vacuum Loading Services

Plant Wash Australia offers efficient and reliable solutions for handling various waste materials in industries such as mining, construction, and manufacturing.

To learn more about Plant Wash Australia, follow this link

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Water Jetting Solutions Pty Ltd

WATER JETTING SOLUTIONS HAS THE EXPERIENCE YOU NEED.

Water Jetting Solutions is a leading provider of hydro demolition services for various industries.

With a team of highly skilled professionals and state-of-the-art equipment, we specialise in using high-pressure water jets to remove deteriorated concrete and coatings from surfaces, leaving behind a clean and prepared substrate for repairs or renovations.

Our company is dedicated to delivering safe, efficient, and environmentally friendly solutions for concrete removal. We combine advanced technology, extensive industry knowledge, and a commitment to quality to meet the unique needs of our clients.

We work closely with construction firms, infrastructure companies, and maintenance organisations to provide effective solutions for their concrete demolition and surface preparation requirements.

To learn more about Water Jetting Solutions Pty Ltd, follow this link

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BGI Group Pty Ltd

BGI Group prioritises delivering exceptional customer service and surpassing expectations to foster long-term relationships with our valued clients.

Established in 2014, BGI Group PTY LTD is recognised for providing specialised infrastructure and marine contracting services. The company has developed a reputation for reliability and expertise within its field, serving a diverse range of clients across Australia.

Certifications

BGI Group is committed to maintaining the highest standards in all aspects of its operations. The company is ISO certified in the following areas:

Quality Management (ISO 9001)
Occupational Health & Safety Management (ISO 45001)
Environmental Management (ISO 14001)

Professional Experience and Client Relationships

The BGI Group team consists of experienced professionals who work closely with niche clients throughout Australia. The company takes pride in consistently delivering services that exceed client expectations, ensuring quality outcomes and long-term partnerships.

To learn more about BGI Group Pty Ltd, follow this link

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Industry Magazine Update

Over the past eight months, members may have been contacted by Befindan Media Pty Ltd, a publishing company engaged by the Board to develop an industry magazine dedicated to the high-pressure water jetting, drain cleaning, vacuum loading, non-destructive digging (NDD), and liquid waste management sectors.

This publication is intended to become the official magazine of AUSJET / ADCVA, with all members encouraged to contribute content. A Memorandum of Understanding (MOU) has been signed between Befindan Media and AUSJET / ADCVA to support the project’s development.

The magazine was initially planned as a quarterly publication, with the first issue targeted for November/December 2025, and the fourth edition timed to coincide with AUSJET26. The aim is to showcase member achievements, share industry insights, and broaden the Association’s reach across mainstream markets.

However, due to several factors — including the varying size and location of member companies and a general lack of initial engagement — the project has been temporarily paused until the New Year. During this time, potential refinements will be developed and presented to members. Our goal remains clear: to create a publication that delivers genuine value and visibility for all members.

In the meantime, Befindan Media will be attending the WJTA Conference in New Orleans this November, where they will meet with the WJTA board to explore ideas on how to best shape an engaging, sustainable industry magazine for our members.

Further updates will be provided in early 2026.

Class A Training

Class A training relates to the use of high pressure water pumps under 5600 bar litres per minute as defined by Section 1.1 of AS4233:2013.

AUSJET's Online Class A Training meets the requirements set out in Section 7.2 of AS4233:2013 Part 1.

To access the Class A Training, follow this link.

Meeting Schedule

General Meeting Thursday 20th November 2025 @ 2pm AEST

You are invited to our General Meeting being held via Zoom.

https://us02web.zoom.us/meeting/register/19JokuFxTvKfvRIzEsKaHg

After registering, you will receive a confirmation email containing information about joining the meeting.

Newsletter and Website Advertising

The AUSJET / ADCVA Newsletter is an e-newsletter which is distributed via email across the membership and other Industry groups and individuals throughout Australasia and internationally; as well as the AUSJET website and across Facebook and LinkedIn social media platforms.

Advertising in the Newsletter consists of either an image advertorial and/or an article advertorial which allows your business to get noticed by those with influence in the Water Jetting, Drain Cleaning, Vacuum Loading and Hydro Excavation industries.

Newsletter - Advertise your business and services in the next Newsletter

Item

Platinum Member

Member

Non-Member

Newsletter

FREE

As per Platinum Member Benefit

$175.00 per Advertorial

$220.00 per Advertorial

Web Banner - We encourage members to advertise on the AUSJET / ADCVA website (Web Banner) which is displayed at the bottom of this screen and across every page. The AUSJET / ADCVA website is accessed by members, industry, government and the community.

Item	Member	Non-Member
Web Banner	$380.50 Financial Yearly	(Members Only Benefit)

If you would like to advertise in the newsletter or on the webpage please email: support@ausjetinc.com.au

Merchandise

Item	Description	Price	Buy Now
Recommended Practices for the Use of Industrial Drain Cleaning Equipment Booklet First Edition 2022	Members 1 - 10 books $18.00ea 10 books & above $15.00ea Non-Members 1 - 10 books $22.50 10 books & above $20.00	Members $18.00 Non-Members $22.50	Contact: support@ausjetinc.com.au
Recommended Practices for the Use of Industrial Vacuum Equipment Booklet First Edition 2020	Members 1 - 10 books $18.00ea 10 books & above $15.50ea Non-Members 1 - 10 books $22.50 10 books & above $20.00	Members $18.00 Non-Members $22.50	Contact: support@ausjetinc.com.au
Guideline notes for safe use of a High Pressure Water Jetter	To download a copy of the guide go to Safe Work Australia
Australian Standard AS4223 1 & 2	To purchase AS4233 1&2 go to S tandards Australia
	AUSJET Medical Alert Card (wallet size)	$2.50 each	Contact: support@ausjetinc.com.au

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AUSJET/ADCVA Newsletter

October 2025

Chairperson's Report

DEN-JET Australia - Platinum Member and Sponsor of AUSJET / ADCVA

WOMA Australia - Platinum Member and Sponsor of AUSJET / ADCVA

AUSJET26 & LEW26

Call for Topics and Speakers – AUSJET26 Conference, Sydney | October 2026

Safety Snippets

October is National Safe Work Month

Reporting Incidents

Incident Alerts

AUSJET/ADCVA Welcomes New Members

Direct Inject Pty Ltd

Plant Wash Australia

Equipment Washing

Vacuum Loading Services

Water Jetting Solutions Pty Ltd

BGI Group Pty Ltd

Industry Magazine Update

Class A Training

Meeting Schedule

General Meeting Thursday 20th November 2025 @ 2pm AEST

Newsletter and Website Advertising

Item

Member

Non-Member

Merchandise

Item

Description

Price

Buy Now

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