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The DL dust airlock from DMN-WESTINGHOUSE has been ATEX approved and optional available flameproof up to 3 bar. The ATEX approval is awarded for protective system / equipment up to 3 bar, Dust class 2 marking Ex II D / 1D/2GD, as well as for equipment marking Ex II 1D/2GD.
The DMN-WESTINGHOUSE DL (Dust Lock) is of a dedicated design for filter applications and is conforming to ATEX Directive 94/9/EC. The standard valve is pressure shock resistant up to 10 bar g pressure. Recently the DL was also tested and approved flameproof up to 3 bar. Both the standard version and the ATEX 3 bar flameproof version can be delivered ex stock. The universal flanges on both sides of the valve are suitable for both round and square counter flanges and are drilled to PN 10. The angle of the inlet down to the rotor has been kept as steep as possible, to reduce the chance of bridging. The outlet from the valve is round, so that you can discharge into either a round or square connection. The DL valve has a very large inlet and a direct drive, providing ample torque to drive the rotor, which has replaceable and adjustable polyurethane blades. An optional steel fixed bladed rotor is also available. The standard drive is a Nord helical geared motor, type SK01-F-71L/4, 0.37 kW, IP 55, isol. F, giving 27 rpm at 50 Hz and 32.4 rpm at 60 Hz. Suitable for 230/400V 50 Hz and 278/480V 60 Hz. The standard model is suitable for handling products up to a temperature of 70 °C and a maximum pressure di
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