Quick answer: An aqueous parts washer is water-based cleaning equipment that uses water, detergent, and mechanical action, such as spray pressure or agitation, to remove grease, oil, and other residues from industrial components, offering a more repeatable alternative to manual scrubbing or solvent-based cleaning.
Cleaning greasy, oily industrial components by hand can be time-consuming.
That's why many maintenance, manufacturing, and repair operations turn to aqueous parts washers to create a more repeatable cleaning process.
But what exactly does "aqueous" mean, and how is an aqueous parts washer different from solvent-based cleaning?
What Is an Aqueous Parts Washer?
"Aqueous" simply means water-based.
An aqueous parts washer uses water, an appropriate cleaning solution, and mechanical action to remove contaminants from parts and components.
Depending on the equipment, the cleaning process may incorporate:
- Heated water
- Detergent
- Spray pressure
- Agitation
- Automatic wash cycles
The objective is to loosen and remove grease, oil, dirt, and other residue from components without requiring an employee to manually scrub every surface.
How Does an Aqueous Parts Washer Work?
The exact process depends on the equipment, but a typical automatic system follows a basic sequence.
1. Parts are placed inside the washer.
Components are positioned so the cleaning solution can reach the necessary surfaces.
2. Water and detergent attack the contamination.
An appropriate aqueous cleaning solution helps loosen oils, grease, and residue.
3. Mechanical cleaning removes the material.
Depending on the machine, spray pressure or other cleaning action removes loosened contamination.
4. The cleaning solution is contained within the system.
Many industrial parts washing systems are designed around a repeatable enclosed process rather than open manual cleaning. That can make it easier to standardize the way parts are cleaned from one cycle to the next.
Aqueous vs. Solvent Parts Washers
One of the biggest questions when evaluating parts cleaning equipment is whether to use an aqueous or solvent-based process. There isn't a universal answer.
Aqueous systems
Use a water-based cleaning process and can combine heat, detergent, and mechanical action.
Solvent systems
Use a solvent specifically selected to dissolve or remove contaminants.
The right choice depends on factors such as:
- Material being cleaned
- Type of contaminant
- Required cleanliness
- Drying requirements
- Production process
- Environmental considerations
- Facility requirements
- Cleaning volume
The goal should be to choose the process that reliably produces the required result for your components and operation.
Do You Need Detergent for an Aqueous Parts Washer?
Yes. An aqueous parts washer typically uses hot water and a compatible detergent to clean parts effectively.
“Aqueous” means water-based—not water-only. In an aqueous parts washer, heated water, detergent, and mechanical action such as spray pressure work together to loosen and remove grease, oil, dirt, and other residues.
The detergent is an important part of the process because it helps break down and lift contamination from the component surface so it can be washed away. The right detergent should be selected based on the part material and the type of soil being removed.
Alkota aqueous parts washers use hot water and biodegradable detergents as part of their cleaning process, providing an alternative to solvent-based parts cleaning for appropriate applications.
When Does an Automatic Parts Washer Make Sense?
An automatic system becomes particularly attractive when parts cleaning is repetitive.
For example, consider an operation where employees repeatedly spend time applying cleaner, scrubbing components, rinsing them, and repeating the process on the next part.
That isn't just a cleaning task. It's labor.
Automating appropriate parts-cleaning work can allow employees to spend less hands-on time on repetitive washing.
Applications for Aqueous Parts Washing
Aqueous parts washers may be useful in environments such as:
- Equipment maintenance
- Manufacturing
- Automotive service
- Fleet maintenance
- Industrial repair
- Engine and component rebuilding
- Heavy equipment service
The suitability of aqueous cleaning depends on the part and contaminant, so equipment should always be selected around the actual process.
What Should You Look for in an Aqueous Parts Washer?
Part size
Make sure the machine can accommodate the largest components you routinely clean, not merely the average one.
Weight capacity
Heavy industrial components require equipment designed to support them.
Cleaning action
Determine how the system reaches complex surfaces and removes the contaminants your operation encounters.
Water temperature
Heat can play an important role when dealing with oily or greasy contamination.
Detergent compatibility
Use cleaning chemistry appropriate for the equipment, material, and contaminant.
Cleaning volume
A maintenance shop cleaning a few components has different requirements from a facility processing parts continuously.
Serviceability
Industrial cleaning equipment needs maintenance too. Consider how easily the system can be inspected, serviced, and supported.
Don't Size the Washer for Today's Average Part
One of the most practical purchasing considerations is also one of the easiest to overlook.
If most of your parts are small but your operation regularly cleans one much larger component, a washer sized only for the average part may quickly become frustrating.
Before selecting equipment, document:
- Largest part dimensions
- Maximum part weight
- Typical contaminants
- Number of parts per day
- Required turnaround time
- Available facility space and utilities
That information will make it much easier to determine what type of parts washer makes sense.
Is an Aqueous Parts Washer Right for Your Facility?
If parts cleaning is an occasional task, manual cleaning may be sufficient.
If it is a routine part of maintenance or production, however, the labor involved deserves closer attention.
An appropriately sized aqueous parts washer can standardize parts cleaning and reduce the hands-on work required for suitable applications.
Alkota manufactures industrial cleaning equipment including parts washers designed for demanding commercial environments.
Frequently Asked Questions
What does aqueous mean in a parts washer?
Aqueous means water-based. An aqueous parts washer uses water with detergent and mechanical action, rather than a chemical solvent, to remove grease, oil, and other residues from components.
Do aqueous parts washers use detergent?
Yes. Most aqueous parts washers use a water-based detergent with hot water and mechanical cleaning action. The detergent helps remove grease, oil, and other contaminants; “aqueous” refers to the water-based process, not plain water alone.
Is an aqueous parts washer better than a solvent parts washer?
Neither option is universally better. The right choice depends on the material being cleaned, the type of contaminant, required cleanliness, drying requirements, and environmental or facility considerations.
What industries use aqueous parts washers?
Aqueous parts washers are commonly used in equipment maintenance, manufacturing, automotive service, fleet maintenance, industrial repair, and engine or component rebuilding.
How do I choose the right size aqueous parts washer?
Base the size on your largest and heaviest routine components, not the average part, and account for daily cleaning volume, required turnaround time, and available facility space and utilities.
Explore Alkota parts washers or contact your local Alkota distributor to discuss the right cleaning system for your operation.