Ravenscroft supplies Halton PRA airflow balancing, adjustment and measurement units.
PRAs provide accurate airflow measurements based on flow nozzle principle, and operate in temperatures ranging from -30 °C to +70 °C. Their conical adjustment section ensures minimised sound generation.
Halton PRAs can also be used as supply air jet nozzle for air diffusion in large spaces.
The PRA units are easy to maintain, as they can be manually adjusted without the need for any tools. Helpful adjustment position marker indicates proper position, e.g. easing repositioning after cleaning. PRAs feature a self-locking adjustment mechanism where position can be ensured with locking screw.