Pressure relief airflow damper BRD

for ships

Halton BRD pressure-relief dampers are used in offshore and marine applications to prevent backflow through ventilation 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