Provide and install Anemostat Retrofit Kits consisting of model (RF-1)(RF-3) retrofit valves where shown on drawings or schedule, that comply with the indicated size, capacity, and performance ratings. The retrofit valves shall have been tested and performance determined in accordance with industry standards 
AHRI 880 and ASHRAE 130.

Acoustical Performance
The air terminal radiated and discharge sound levels shall not exceed the power levels as scheduled, at the differential static pressure (∆Ps) shown.

Construction
The valve shall be constructed of minimum 20 gauge (zinc-coated sheet steel) and shall include a steel control enclosure, housing all primary flow controls, including actuators, controllers, relays, etc. 

Damper
The damper assembly shall consist of a round blade that requires nominal 90-degree rotation from fully opened to fully closed positions on sizes 05 through 16. The damper blade shall be mechanically attached to the die-cast metal damper shaft with through the shaft machine-applied rivets. The low leakage damper shall be constructed of a gasket material sandwiched between two 22-gauge zinc coated steel plates. Leakage through the damper shall be less than 1% of the maximum rated airflow at 3” w.g. inlet static pressure. The damper gasket material is securely fastened between the two damper plates using machine applied rivets. The damper assembly shall rotate freely in self-lubricating bearings. Damper position shall be indicated on the end of the shaft on the outside of the casing. Outlet connection and damper on size 24 x 16 shall be rectangular.

The damper leakage shall not exceed 2% of the maximum rated capacity of the inlet at 4” differential static pressure. Damper position shall be indicated on the end of the shaft on the outside of the casing. The primary damper fail positions for pneumatic applications (normally open / normally closed) shall be easily re-configured in the field.

Air Flow Sensor (RF-3 only)
A multi-point, cross style airflow sensor (Velocity Wing) of the center averaging type shall be located in the terminal inlet. The sensor shall be aerodynamically designed to provide low pressure loss, quiet operation, and shall incorporate at least 20 sensing points for all diameters/sizes. The sensor shall amplify the velocity pressure signal and provide feedback of actual flow to the controller with an accuracy of ± 5%. An identification label with piping / wiring diagram and air flow calibration chart shall be affixed to each unit. Flow taps with caps, separate from the airflow sensor or controller taps shall be provided for flow measurement and adjustment.

Control System
The controls shall be pneumatic, analog electronic, or direct digital controls (DDC) based on Anemostat Control Package ______________.