MR Modulo


The model MR Mono Constant Airflow Regulator is a modulating orifice that automatically regulates airflows in duct systems to constant levels.

The passive control element responds to duct pressure and requires no electric or pneumatic sensors or controls.

The MR Mono compensates for changes in duct pressure caused by thermal stack effect, building pressure, dust-clogged filters, etc.

The MR Mono also provides a quiet, low-cost solution to balancing forced-air systems for heating, air conditioning and ventilation, eliminating the need for on-site balancing.

The MR Mono will regulate airflow in supply, return, or exhaust duct systems.
It can be mounted horizontally or vertically, and can be fitted in ductwork and accessories.

The active control element of the MR Mono is a flexible bulb that inflates and deflates in response to the static pressure difference across the control.

This operation regulates the freearea opening through the control, resulting in maintenance of velocity and specific airflow setpoints.

Each MR Mono is designed and produced for control of air in temperatures ranging from 14° to 140°F (-10° to 60°C).