BRD - 4 Pages

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Catalogue excerpts

Halton BRD pressure-relief dampers are used in offshore and marine applications to regulate the pressure in the ductwork system. The Halton pressure relief dampers do not need an actuator or motor. The BRD dampers can be installed in rectangular or circular ducts horizontally or vertically. The damper is in closed position when the pressure in the duct is lower than the adjusted opening pressure. Opening pressure can easily be set by adjusting weight of each damper/installation. Weights are included in the delivery. Pressure relief dampers can be supplied with non-standard dimensions on request. • Fixed frame in painted, galvanized or stainless steel. Blades of galvanized or stainless steel. • Models for horizontal or vertical installation • Blades contain silicone seal to lower the leakage through blades • Available as ATEX approved • Leakage class of closed damper up to class 2. Contact Halton for more details. • Blades linked and open in parallel • Opening pressure adjusted by changing the position of counterweight(s) • Opening pressure range between 30 Pa and 150 Pa (up to 300 Pa optional) • Counterweights included • Standard construction places weights on the right hand side, weights on the left hand side available as an option • Final adjustment of counterweights carried out during commissioning • Maximum duct pressure for damper construction 5000 Pa and maximum air velocity 15 m/s. In case of high duct pressure, contact Halton Marine for finding the most suitable solution. Halton MARINE

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BRD DIMENSIONS AND MATERIAL THICKNESS BRD pressure relief dampers meet international stan- Standard flange width 27 mm. Flanges and drilling also dards for both rectangular (width B 200-1200 mm available according to ISO 15138 standards. Modular and height H 200-1400 mm, 1 mm division) and circular construction sizes up to 2400x2800 mm are available. ducts (Ø100 - 1250 mm). Non-standard dimensions are Standard frame material thickness 3 mm. Blades are made of two sheets, each of being 0.8 mm thick. ALL BOLT HOLES Ø12 BOLTS M10x30 BRD DRAWING, CIRCULAR CONNECTIONS * THIS DIMENSION AS OPTION WHEN...

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BRD PRODUCT MODELS AND ACCESSORIES Models for horizontal and vertical installation available. Circular connection pieces are available. Standard construction places weights on the right hand side. Weights on the left hand side available as an option. WEIGHTS OF HALTON MARINE BRD DAMPERS (KG) OPERATION PRINCIPLE Pressure-relief damper will allow one-way pressure relief in the ductwork. This feature is based on imbalanced blades. When the pressure in the duct rises above selected value (from 30 Pa to 150 Pa, up to 300 Pa optionally) the damper blades open to allow pressure relief. The minimum opening...

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