Non Return Valves & Shutters
Non Return Shutters
Displaying 1 to 16 (of 16 products)
Backdraft Dampers - BDP
£ 5.98
Ducting Backdraft Dampers
The BDP01 damper has aluminium lamellae which open during the air flow in one direction and close when air is draught back. When no air is flowing, the lamellae are maint...
Backdraught Shutters 039-SFSV-63/71
£ 192.96
Backdraught Shutters 039-SFSV-63/71 Back draft shutter for SSRL 710...
Flanged Damper 019-0250-STD
£ 424.76
Flanged Damper 019-0250-STD
Prevents reverse flow of air when fan is not operating
Fixed directly to fan case flange
Hot dip galvanised steel
Galvanised steel butterfly type blades
Suitable for...
Flanged Damper 019-0500-STD
£ 583.15
Flanged Damper 019-0500-STD
Prevents reverse flow of air when fan is not operating
Fixed directly to fan case flange
Hot dip galvanised steel
Galvanised steel butterfly type blades
Suitable for...
JCA 560 - Back Draft Shutter for CRHB/CRHT Roof Fans
£ 186.32
JCA 560 - Back Draft Shutter for CRHB/CRHT Roof Mounted Units...
.jpg "JCA-1100 - Back Draft Shutter for CRHB/CRHT Roof Fans")
JCA-1100 - Back Draft Shutter for CRHB/CRHT Roof Fans
£ 456.75
JCA-1100 - Back Draft Shutter for CRHB/CRHT Roof Fans...
RSK355 - Back Draught Shutter
£ 82.95
Back Draught Shutter
for duct
installation
Galvanized sheet steel housing
Aluminium flaps ...
VKS 355-500 Automatic shutter
£ 89.25
VKS Dampers
Automatic shutter
Automatic operation
Robust construction
Seawater resistant
Robust
The VKS is fitted with shutter blades that are manufactured from
seawater-resistant aluminium...
Displaying 1 to 16 (of 16 products)
1 x TG-K Duct temperature sensor1 x Inclined Kurb support for CTHB/6-6301 x JBR N - 630 Flange to suit CRHB/CTHB roof fans1 x Elta Variable Speed Drive IP66 - 0.75KW1 x FU 22 25 Frequency Inverter1 x FU 075 52 Frequency Inverter (IP20)1 x FRQ5-4A V2 Inverter Speed Controller1 x FRQ-10A V2 Inverter Speed controller1 x Helios TSD 3.0 Transformer Speed Control (400v)1 x FU 15 40 Frequency Inverter1 x Elta Variable Speed Drive IP66 - 7.5KW1 x Elta Variable Speed Drive IP66 - 2.2KW1 x Elta 10 Amp Electronic single phase speed controller.1 x ELTA - Three Phase Transformer 10amps1 x ELTA - Three Phase Transformer 3amps1 x ATEX rated 3-phase Speed Control - R-DK4 KT (EX)1 x Elta Variable Speed Drive IP66 - 2.2KW (1ph to 3ph)1 x FRQ5-10A Inverter Speed controller1 x FU 15 16 Frequency Inverter1 x Elta Variable Speed Drive IP66 - 1.5KW1 x Frequency converter RUCK - FU 075 201 x Elta Variable Speed Drive IP66 - 4.0KW1 x Frequency converter FU 075 14 - IP661 x NKS-D swirl diffuser v-300 x 300mm1 x FU 22 04 Frequency Inverter1 x Balance S Diffuser - NO RING - 125mm1 x ELTA - Single Phase Transformer 2amps1 x Curved Blade Grille 600x600 (2way blow)1 x EC6H - Reversible Group Fan Electronic Controller1 x Circular Ceiling Diffuser - TST 2001 x Circular Ceiling Diffuser - TST 1001 x Electronic extractor fan speed controller - FSC 1.51 x PCA Diffuser - PCA-3151 x Elta 3 Amp Electronic single phase speed controller with TK1 x 5-Speed Controller for use with Elta SAX Classic Fans1 x Circular Ceiling Diffuser - TST 1601 x Elta 2 Amp Electronic single phase speed controller.1 x JSR 200 Painted RAL50181 x Round ceiling diffuser 400mm1 x ELTA - Single Phase Transformer 12amps1 x Balance S Diffuser - NO RING - 100mm1 x Elta 3 Amp Electronic single phase speed controller.1 x Elta 6 Amp Electronic single phase speed controller with TK1 x EFSC-3N- Single Phase Speed Control1 x ELTA - Single Phase Transformer 8amps1 x ELTA - Single Phase Transformer 16amps1 x ELTA - Single Phase Transformer 4amps1 x COM-31 x AIRVENT speed control - AIR4019611 x Round ceiling diffuser 200mm1 x Elta 6 Amp Electronic single phase speed controller.1 x PCA Diffuser - PCA-2501 x EFSC-6N- Single Phase Speed Control1 x Round ceiling diffuser 250mm1 x Round ceiling diffuser 350mm1 x ELTA - Single Phase Transformer 10amps1 x Run On Timer - 5s - 4hrs - RT5A1 x Remote Timer Control - 13511 x Push Timer Switch - ZA41 x Helios ZNE Electronic Fan Overrun Timer1 x Multi Input Run On Timer - 0 - 20min - CFCU1 x Time Delay Unit - DT20B1 x 7 Day Programmable TIMECLOCK1 x ACO8AC/EC AutoChangeover panel1 x ACOAS/ AC/EC Auto Changeover 8Amp1 x CONTROL ECOWATT - Basic1 x EC-Vent control board1 x EM30-24 Electro-Mechanical Control Panel1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 6301 x Easy-fix termination kit - High Rise Ventilator - EFT1 x Elta ACO Panel 149-ACO18B1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 5001 x EC-Vent Room Unit1 x Systemair Save Connect 2.0 Internet Module1 x U-EK plastic housing IP65 - for use with the U-EK230E Motor Protection1 x EM30-24 Control Panel Commissioning Service1 x Commercial Single or 3 phase Fan Reversing Switch - RS11 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 3551 x Elta Wall Cowl SWC56/631 x REU 3amp Speed control - Two Speed Five-Step Transformer - Trickle and Boost1 x GRA-100 External Grill by S&P1 x Skyflow SSR Horizontal Roof Cowl SSR80B1 x Elta Louvre Shutter - 400mm
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Circular Inline Silencers - 0.6M long - SLU-600
£ 58.40
I have a loft mount extractor fan which was very noisy. I ...