• Model:DAOSL

DAOSL Back Draft Damper

£ 11.49 (excl. VAT)

£ 13.79 (inc. VAT)



The DAOSL back draft damper has aluminium lamellae which open during the air flow in one direction and close when the fan motor is inactive. When no air is flowing, the lamellae are maintained in a vertical position using a spring. The damper is supplied with double EPDM gasket.

Available sizes - 100m, 125mm, 150mm, 200mm, 250mm, 315mm,

Please select below..

Look good, works well, except the shaft of the lanellae cuts into the tube or pipe. Had to shorten mine to get it in. The shaft should not be longer that the seals diameter.

Rated by Trevor

Thank you for the review. The shaft length is not normally a problem because they are normally used to join two lengths of ducting and are not designed to be fully inserted, although it is interesting you have managed it! Be aware any extra friction on the shaft will affect its operation.
- Admin

Available Options

1 x D2E146-AP47-331 x CBS-80 Outlet Flange for CBT-801 x RVK-EX 315D4 (ATEX) - 315mm Atex Rated Centrifugal Fan1 x DKEX 355-6 Centrifugal High Performance ATEX Fan1 x Spiral Ducting 1 meter - 450mm1 x Elta Variable Speed Drive IP66 - 2.2KW1 x Elta Variable Speed Drive IP66 - 7.5KW1 x Helios TSD 3.0 Transformer Speed Control (400v)1 x FU 075 52 Frequency Inverter (IP20)1 x FRQ-10A V2 Inverter Speed controller1 x Elta Variable Speed Drive IP66 - 0.75KW1 x Frequency converter RUCK - FU 075 201 x FU 22 25 Frequency Inverter1 x Frequency converter FU 075 14 - IP661 x Elta Variable Speed Drive IP66 - 4.0KW1 x FU 15 16 Frequency Inverter1 x Elta Variable Speed Drive IP66 - 5.5KW1 x Elta Variable Speed Drive IP66 - 1.5KW1 x FRQ5-10A Inverter Speed controller1 x Elta Variable Speed Drive IP66 - 2.2KW (1ph to 3ph)1 x ELTA - Three Phase Transformer 10amps1 x FU 075 04 Frequency Inverter (IP20)1 x ATEX rated 3-phase Speed Control - R-DK4 KT (EX)1 x ELTA - Three Phase Transformer 3amps1 x Helios - FIUK-11KW 24.0A - FREQUENCY INVERTER1 x Frequency converter RUCK - FU 075 211 x Elta 10 Amp Electronic single phase speed controller.1 x ELTA - Single Phase Transformer 2amps1 x Electronic extractor fan speed controller - FSC 1.51 x EC6H - Reversible Group Fan Electronic Controller1 x NKS-D swirl diffuser v-300 x 300mm1 x Balance S Diffuser - NO RING - 125mm1 x Circular Ceiling Diffuser - TST 1251 x Elta 2 Amp Electronic single phase speed controller.1 x Elta 3 Amp Electronic single phase speed controller with TK1 x 5-Speed Controller for use with Elta SAX Classic Fans1 x ELTA - Single Phase Transformer 8amps1 x Airvent ceiling fan controller1 x Elta 6 Amp Electronic single phase speed controller with TK1 x Circular Ceiling Diffuser - TST 1001 x ELTA - Single Phase Transformer 16amps1 x PCA Diffuser - PCA-3151 x Curved Blade Grille 600x600 (2way blow)1 x EFSC-3N- Single Phase Speed Control1 x ELTA - Single Phase Transformer 12amps1 x Elta 3 Amp Electronic single phase speed controller.1 x JSR 200 Painted RAL50181 x COM-31 x Circular Ceiling Diffuser - TST 2001 x AIRVENT speed control - AIR4019611 x ELTA - Single Phase Transformer 4amps1 x Circular Ceiling Diffuser - TST 1601 x EFSC-6N- Single Phase Speed Control1 x Balance S Diffuser - NO RING - 100mm1 x Round ceiling diffuser 200mm1 x Elta 6 Amp Electronic single phase speed controller.1 x Round ceiling diffuser 300mm1 x ELTA - Single Phase Transformer 10amps1 x PCA Diffuser - PCA-2501 x Round ceiling diffuser 250mm1 x Vent Axia ACM 150 T (Timer Model) inline mixed flow duct fan1 x Round ceiling diffuser 350mm1 x Multi Input Run On Timer - 0 - 20min - CFCU2 x Vent Axia ACM 100 T (Timer Model) inline mixed flow duct fan2 x Remote controller FLEX - for VEKO INT1 x Vent Axia ACM 150 inline mixed flow duct fan1 x Helios TSW 7.5 Amp Transformer speed controller2 x Transformer 5 Speed Controller - ATC1-4TK1 x Helios TSW 0.3Amp Compact Transformer speed controller1 x Transformer 5 Speed Controller - ATC1-8TK2 x Transformer 5 Speed Controller - ATC1-10TK2 x Vent Axia ACM 125 T (Timer Model) inline mixed flow duct fan1 x Three Phase Transformer controllers - RMT 1.5 Amp1 x Temperature Fan Speed Controller - ATCP4-WMS1 x Vent Axia ACM 125 inline mixed flow duct fan
Reviews
Duct Mounted Inline Filter - EU4
Duct Mounted Inline Filter - EU4
£ 44.99

Well made and robust, but it was not use for my application ...