Description
VOLUME FLOW LIMITER FOR INSERTION INTO DUCTING
Circular, mechanical self-powered controllers for insertion into round duct-work
Product Features
- Provides constant volume regulation of delivered airflow rate regardless of inlet static pressure variations
- Unit operates independent of gravity and may be installed in any (horizontal or vertical) orientation
- Require no external power source and are virtually maintenance free
- Unique damper blade edge for acoustic optimization
- Simple, easy and quick balancing and commissioning on site
- Range of volume flow rate set-points for each nominal size
- Controlled volume flow rate is field adjustable by means of a calibrated dial on the side of the unit
- Best accuracy among controllers for insertion
Technical Data
- 5 Nominal Sizes from 4″(100 mm), 5″(125 mm), 6″(150 mm), 8″(200 mm), 10″(250 mm)
- Flow rate range:
- 4″ = 11 to 72 CFM
- 5″ = 23 to 115 CFM
- 6″ = 30 to 155 CFM
- 8″ = 55 to 312 CFM
- 10″ = 93 to 450 CFM
- Controllers operate from 0.12 to 1.2 inches H2O differential static pressure
- Minimum differential pressure: 50 Pa or 0.2″ wc
- Maximum permissible differential pressure: 300 Pa or 1.2″ wc
- Suitable for low airflow velocities from 150 Feet per minute
- Control component: manual operation
Construction Details
- Casing and damper are of UL94V1 plastic, UL 2043 Standard for Fire Test for Heat and Visible Smoke Release for Discrete Products
- Control spring is stainless steel
- Internal pressure regulation diaphragm is of polyurethane.
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