Metalaire 598B


Kit Retrofit 8″

Availability: Estimated 6 Weeks

Condition: New
Brand: Metalaire
Status: Active
SKU: 71987
Manufacturer Part #: 598B


Series RA-500 retrofit assemblies are customized retrofit valves designed to slip into existing mechanically regulated single or dual duct terminals. The units allow the conversion of constant volume systems to more energy efficient, variable volume systems. RA-500 assemblies are currently available to fit most brands of terminals manufactured from the 1960s to the 1980s. The RA-500 valves can be installed, in most applications, without disrupting existing ductwork. Units are installed by removing existing volume regulators and inserting the RA valve. One or two valves in a single panel may be controlled by a single actuator.

Additional information

Weight 1 lbs



Production Status



  • Customized retrofit valves for existing single or dual duct systems
  • Optional flow controllers available on satellite mounted panels
  • Pneumatic or electronic control sequences available
  • Metal inlet flow sensor with extra balancing taps


Retrofit Air Terminal Unit; RA-500
Metalaire – Data Sheet


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