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Cleanroom Luftverteilungssysteme
Bubble-Tight Isolationsdämpfer
A heavy rectangular isolation damper whose solid butterfly blade compresses a mechanically retained perimeter seal under high closing torque.
- Solid Butterfly Isolation Blade
- Mechanically Retained Perimeter Seal
- Double-Gland Axle Packing
- Heavy Flanged Channel Frame
Produkteinführung
The bubble-tight isolation damper uses one rigid rectangular butterfly blade inside a heavy flanged channel frame. When the actuator rotates the blade to closed, a continuous silicone seal is compressed against the seat around the complete perimeter. The drive axle passes through a double-gland stuffing box, and outboard bearings keep the blade aligned without placing the bearing races in the air path. Stainless-steel construction and compatible coatings allow the assembly to serve isolation, wash-down and decontamination boundaries.
Key Features
The perimeter seal is mechanically fastened to the blade so it can be inspected and replaced without welding.
Double-gland axle packing restricts leakage around the rotating shaft where it exits the pressure boundary.
External relubricable bearings carry radial load while remaining accessible outside contaminated airflow.
Kunden Produktbedenken
Bubble-tight service demands uniform perimeter compression, controlled shaft leakage and a frame stiff enough to remain square under differential pressure.
A multiblade damper leaves several blade-to-blade leakage paths at a critical boundary.One solid butterfly blade closes against a continuous seat with no intermediate blade joints.
The axle penetration leaks even though the blade perimeter is fully seated.A double-gland stuffing box seals around the rotating shaft outside the primary blade seal.
High differential pressure deflects a light frame and unloads part of the gasket.Heavy channel construction and a reinforced backing plate maintain seat geometry under closing load.
A damaged perimeter seal requires replacement of the complete blade assembly.Mechanical seal retainers allow the gasket to be removed and renewed as a service component.
Typische Anwendungen
Biocontainment duct isolationPharmaceutical decontamination zonesHigh-integrity laboratory exhaustFilter housing isolation boundariesContaminated process-air shutdown
Technische Parameter
Representative construction data for a heavy-duty rectangular bubble-tight isolation damper are shown below.
| Core Material | Solid 304 or 316 stainless-steel butterfly blade with continuous silicone perimeter seal |
|---|---|
| Panel Dicke | 2.7 mm solid rectangular blade plate |
| Effektive Breite | 254–1130 mm nominal clear opening width |
| Maximale Länge | Up to 1321 mm nominal frame height |
| Stahl facing Dicke | 2.7 mm stainless or coated-steel flanged channel frame |
| Kerndichte | Approximately 8000 kg/m³ for austenitic stainless-steel blade construction |
| Thermische Leitfähigkeit | Approximately 14–16 W/(m·K) for 304 or 316 stainless steel |
| Oberfläche Finish | Mill-finish stainless steel or industrial epoxy coating with silicone blade seal |
| Gemeinsamer Typ | Flanged channel frame with solid butterfly blade, bolted seal retainer and double-gland axle stuffing box |
| Customisierung | Verfügbar je nach beabsichtigter Anwendung und Betriebsumgebung. |
Verfügbare Optionen
304 or 316 stainless-steel constructionElectric or pneumatic high-torque actuatorOpen-close position switchesIndustrial epoxy or polyester coating
Planning a Bubble-Tight Isolation Damper specification?
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