Geared blade movement
The drive provides controlled positioning across the duct opening.
PRODUCT / TECHNICAL DATA Cleanroom Ductwork & AccessoriesSpecifications / Configurations / Procurement
PRODUCT GALLERYST
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Cleanroom Ductwork & Accessories
Worm-Gear Volume Control Damper
Product specifications
Common specification options
| Brand | ST |
|---|---|
| Adjustment | Manual worm gear |
| Body | Galvanized steel or stainless steel |
| Connection | Flanged |
| Size | Custom |
| Blade arrangement options | Linked multi-blade |
| Position setting | Worm-gear handwheel adjustment |
| Position-indication options | Local position scale |
| Mounting options | Inline duct installation |
| Dimensions | Custom duct section and casing depth |
Customization availableDuct section, casing length, actuator connection and mounting flanges can be customized.
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Worm-Gear Volume Control Damper sets branch airflow through a geared manual mechanism. Handwheel movement is transferred to the linked blades in controlled increments, useful when the balancing position needs deliberate local adjustment.
FEATURES AND BENEFITS
How it helps
Stable setting
The mechanism supports retention of the selected blade position between balancing visits.
Position-scale option
A local scale can help staff return to a previously recorded setting.
APPLICATIONS
Where it is used
Ventilation commissioning
Adjust a supply or extract branch against measured airflow.
Occasionally adjusted ductwork
Use where local access is available and continuous motorized control is unnecessary.
SELECTION GUIDANCE
Choosing the configuration
Access for adjustment
Leave space to operate the handwheel and read the setting after insulation or nearby services are installed.
PROCUREMENT / INQUIRY
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