Industrial washdown hoses and service conditions

Technical explanation

In cleaning, the hose may be exposed both to the solution passing through it and to chemicals splashing on it from outside. When the gun is closed, the pressure behavior of the system also differs from the normal flow condition. In an assembly that is constantly dragged or handled by an operator, bending, sleeving and connection weight become important. A product's hot water range does not mean steam use is permitted. The compatibility of coupling and seal materials with cleaning agents must also be examined separately.

Source: S036, S037

Topic-specific checkpoints

Source: S036, S037

How is it assessed in practice?

Link the request form to the cleaning recipe: write the product name used, dilution ratio, temperature and duration separately. For example, a stronger cleaner used only on weekends can put a hose selected for daily water conditions into a different service. Examine the hose routing and operator ergonomics; do not gloss over an abrasion problem with just a thicker sleeve. When a new connection is fitted, also check that the assembly permitted by the gun manufacturer has not changed.

Original editorial recommendation; not a clause of a standard.

Frequently asked questions

Can steam cleaning be done with a hot water hose?

Only if the product has explicit approval for steam service. Temperature figures being close does not show that the fluid phase and pressure conditions are equivalent.

Source: S036, S037