The standard fully insulated dissipative silencer is designed to minimize undue pressure loss while maximizing attenuation, specifically in the 2nd and 3rd octave bands.
Standard Features
- Venturi valve inlet for reduced pressure drop.
- 22 ga. (0.86) zinc coated steel casing, mechanically sealed, low leakage construction.
- 16 ga. (1.63) corrosion-resistant steel opposed blade damper with extruded PVC seals. 45° rotation, CW to close.
- Tight close-off. Damper leakage is less than 2% of the terminal rated airflow at 3" w.g. (746 Pa).
- 1/2" (13) dia. plated steel drive shaft. An indicator mark on the end of the shaft shows damper position.
- Multi-point averaging Diamond Flow Sensor. Aluminum construction. Supplied with balancing tees.
- FMI Diamond Flow Sensor is insert type design to permit easy removal for cleaning. Secured with thumb screws.
- Side access door allows quick access to flow sensor.
- Rectangular inlet and discharge with slip and drive cleat duct connection.
- Full NEMA 1 type controls enclosure for factory mounted controls.
- VAV section lined with 13/16" (21) thick, 4 lb. density Steri- Liner insulation. Fiberglass with a reinforced aluminum FSK facing. Meets the requirements of NFPA 90A, UL 181 and ASTM C655.
- "Notch and tuck" fabrication and full seam length steel Z-strip construction.
- Right-hand controls location is standard (shown) when looking in direction of airflow. Optional left hand controls mounting is available.
- Available in 11 unit sizes to handle from 30 to 8575 cfm (14- 4047 l/s).
