Does an aqueous or solvent parts washer clean better?

Jul 31, 2023 | Matt Reed

The effectiveness of an aqueous or solvent parts washer depends on the specific cleaning requirements and the type of contaminants you need to remove from the parts. Each type of parts washer has its advantages and limitations, and the choice between them will depend on various factors. Let's explore the differences:

Aqueous Parts Washer:

  • Aqueous parts washers use water-based cleaning solutions to remove contaminants from parts.
  • They are generally considered more environmentally friendly compared to solvent-based washers because they produce fewer harmful emissions and reduce the use of hazardous chemicals.
  • Aqueous parts washers can effectively remove water-soluble and oil-based contaminants, such as dirt, grease, oil, and some light carbon deposits.
  • They are suitable for general cleaning tasks and commonly used in various industries.
  • While aqueous parts washers may not be as aggressive as solvent-based ones, they are still efficient for many cleaning applications.

Solvent Parts Washer:

  • Solvent parts washers use solvent-based cleaning solutions, which are typically more aggressive in breaking down and removing stubborn contaminants, including heavy grease, oil, carbon deposits, and certain types of coatings.
  • They are highly effective in cleaning parts with complex geometries, blind holes, and intricate surfaces.
  • Solvent parts washers can work at lower temperatures than aqueous washers, which may be beneficial for some heat-sensitive parts.
  • Solvent-based cleaning solutions may require more careful handling and storage due to their flammability and potential environmental impact.

Choosing between an aqueous or solvent parts washer depends on factors such as the type of contaminants you need to remove, the parts' material and design, environmental considerations, safety requirements, and budget constraints. In many cases, aqueous parts washers are preferred due to their more eco-friendly nature and lower operating costs. However, solvent parts washers remain essential for certain specialized applications that require the aggressive cleaning power they offer.

Ultimately, it is essential to assess your specific cleaning needs and consider the advantages and limitations of each type of parts washer to make the best choice for your particular cleaning requirements.