Which of the following is a disadvantage of plural component airless spray systems?

One significant disadvantage of plural component airless spray systems is their higher cost compared to single piston systems. This is primarily due to the complexity of the equipment and the mechanisms required to handle multiple components, particularly where precise mixing and application ratios are necessary. Additionally, the costs associated with maintenance and the need for specialized equipment can further elevate the overall expenses involved in using plural component systems. Operators must be well-trained to manage this complexity, making the initial investment and ongoing costs a key disadvantage when comparing to simpler systems like single piston setups that generally have a lower upfront cost and require less specialized knowledge to operate.