What is a common reason for poor foam quality when using an in-line eductor?

Poor foam quality when using an in-line eductor is often attributed to the flow through the eductor exceeding its rated capacity. An in-line eductor relies on a specific range of flow rates to effectively mix foam concentrate with water and create the desired foam consistency. When the water flow is too high, it can disrupt the mixing process, leading to inadequate foam formation. The eductor is designed to operate optimally within specified parameters; exceeding those limits could prevent proper vacuum and aspiration of the foam concentrate, ultimately resulting in a weaker or less effective foam.

Other factors, such as low ambient temperatures or insufficient water supply, indeed impact foam performance but do not specifically relate to the capacity limitations of the eductor in this context. Similarly, the use of too much foam concentrate might create other issues, such as overly rich foam, but the significant concern for maintaining proper foam quality remains linked to exceeding the flow rate that the eductor can handle effectively.