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Pressure relief damper for low opening pressures, Type KL-ETE

In a great variety of different applications within HVAC systems pressure relief dampers manufactured by Krantz are used to limit the pressure and control it, respectively. Typical applications include the protection of ductwork from inadmissible high loading caused by positive pressure or negative pressure, positive pressure ventilation of staircases, or setting a defined pressure drop between adjacent rooms.


It is often required that a defined pressure gradient of 50 − 150 Pa is set between two neighboring rooms. This guarantees a directed flow of air in the leakage ports existing between the rooms and thus avoids the undesired transport of pollutants into the room to be protected. Pressure relief dampers type KL-ETE can be used in this application both as control device for setting a defined pressure gradient between two rooms and as safety valve to set a limit to a maximum admissible pressure value. Depending on available space and range of volume flow to be relieved pressure relief damper type KL-ETE or type KL-ETM is the optimal choice.


Pressure Relief Dampers with switching function KL-ETE (at high volume flow)


W x H x D 348 x 598 x 485 mm


approx. 19 kg

Range of air flow:

1 0 - 1 400 l/s [0 - 5 000 m³/h]

Opening pressure, adjustable:

50 - 150 Pa

To find out how you could benefit from our product, talk to an expert today on 0203 912 6222 or fill out the form below