Non Return Valves & Shutters
Non Return Shutters
Displaying 1 to 17 (of 17 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...
Flanged Damper 019-0560-STD
£ 602.00
Flanged Damper 019-0560-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...
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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 17 (of 17 products)
1 x MV-B Dual Switch for use with Helios HQW plate fans,2 x Commercial Single or 3 phase Fan Reversing Switch - RS12 x Skyflow SSR Horizontal Roof Cowl SSR31/35B1 x CMT-2 225/090 1.1KW - Single inlet centrifugal fan direct driven1 x FAST-TRACK RANGE 75mm - Click Ring (1 bag of 10)1 x Transformer (silent) speed controller - RE 5.0 Amp2 x Transformer Speed Control - RTRE- 7.0Amp3 x Helios HQW-315/4 - IP552 x Helios PU10 Speed Potentiometer (Flush Mounted)1 x Speed Controller - REB52 x Elta Variable Speed Drive IP66 - 0.75KW1 x Elta Wall Cowl SWC35/402 x Isolator Switch - EFF-ISO2 x Skyflow SSR Horizontal Roof Cowl SSR31/35BS5 x Transformer Speed Control - RTRE- 1.5Amp1 x CBA-60 Inlet Flange for CBT-602 x Speed Controller - REB101 x GRA-100 External Grill by S&P2 x SG-200 Fan Guard for the HQW 2001 x CBM 9-9 550w 4P VR (Open Motor)3 x MTS10- extractor fan 3 step switch3 x REB-CVF 0-10v Controller3 x Speed Controller - REB1-N1 x Elta Wall Cowl SWC25/312 x Quietflow SQS400-1ECL - Centrifugal Box Fan5 x Elta Variable Speed Drive IP66 - 2.2KW5 x MTP 10, 10K, Speed control2 x Bathroom Fan -Envirovent- Silent 100 T (Timer Model)3 x CBM Low Pressure Centrifugal Fan - CBM 10/10 4 Pole 550watt CVR8 x Vent Axia Silent 100T (TIMER)7 x QPTW 250C Acoustic Twin Fan with Controller1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 7104 x Helios HQW-250/4 - IP555 x Speed Controller - REB12 x Silent 100 Window Kit - windowS4 x PIR Sensor - PIR22 x DEF-CBM-RE-7 - Protection Guard1 x CBM Low Pressure Centrifugal Fan - CBM 10/10 4 Pole 550watt VR1 x Jet Cowl - 315mm3 x Elta Variable Speed Drive IP66 - 0.37KW (1ph to 3ph)2 x EBM-Papst D4E225-BC01-17 Double inlet1 x KKS 100 silencer-section - For use with the MUB 100 size Fans.1 x TD Mixvent 800/200 EEXEIIT33 x Elta 6 Amp Electronic single phase speed controller.2 x UB47- Universal Insulated Terminal4 x PIR Sensor - PIR42 x MEV Spider Wireless boost Switch - MEV-SWH-W2 x Elta 10 Amp Electronic single phase speed controller.2 x RDH FLEX-SQUARE - ADH/RDH 04501 x REE-2 Electronic Speed Controller1 x FRQ5-10A Inverter Speed controller1 x DDMP 12-12 3F 1810W M6A4 DG02 x Compact SCD450/4-1AC3 x CBT-100N Centrifugal2 x Biflow SB400-CON2-3 - High Temperature Bifurcated Fan2 x EBM-Papst D3G133-BF05-14 Double inlet1 x Three Phase 3 step - 10amp Transformer controller for use with the HV Wall Mounted fans.2 x Vent Axia SC5001 - Speed controller1 x Airvent ceiling fan controller2 x Contactor Interface Station - CI92 x Speed controller with Reverse - REB-1R3 x Transformer speed controller - ATC1 - 1.5 Amps2 x Elta Variable Speed Drive IP66 - 1.5KW1 x GXC6EC - High Performance Extract Fan4 x REU 7amp Speed control - Two Speed Five-Step Transformer - Trickle and Boost1 x Egg Crate Grille with Dust panel filter 1 inch- 595x5951 x LFBR 315 G4 - Helios Inline Filter Box - 315mm2 x Speed Controller - REB81 x Helios TSW 1.5 Amp Transformer speed controller2 x RD35S-4DW.6W.3L - 122297 (Three Phase)3 x AIRVENT speed control - AIR4019614 x CBM Low Pressure Centrifugal Fan - CBM 12/12 6 Pole 736watt CVR1 x Single Deflection Grille 400mm with OBD damper1 x Remote Timer Control - 13513 x Speed Controller - REB2.5-N1 x Mini Diffuser - 100mm1 x Elta 3 Amp Electronic single phase speed controller with TK1 x Silentub - STUB 1001 x Quietflow SQS100-1ECL - Centrifugal Box Fan2 x VEKA INT 2000/15.0-L1 EKO1 x TD160-NT Mixvent - 100mm - TD160 Timer2 x ACO8AC/EC AutoChangeover panel2 x CBA-100 Inlet Flange for CBT-1001 x CO2 Room Sensor - CO2-R1 x Remote controller FLEX - for VEKO INT1 x Helios TSW 7.5 Amp Transformer speed controller1 x DS-2 2-Speed Switch (3 Phase)2 x DDMP 10-08 3F 2210W M6A4 DG01 x Transformer 5 Speed Controller - ATC1-2TK1 x Single phase speed controller by auto-transformer - RMB 1.5 Amp2 x ELM 18 EX Flexible Cuff for ERM 182 x Helios RR-250-C Centrifugal inline fan1 x Vent Axia ACM 125 T (Timer Model) inline mixed flow duct fan1 x Elta 6 Amp Electronic single phase speed controller with TK1 x Elta - Room Sensor - Temp/Humid/C021 x ERR 20/1 Centrifugal inline fan1 x TUNE-R-200-3-M4 - Control Damper1 x S&P MULTI-REG EC FAN CONTROLLER / INTERFACE1 x CBM Low Pressure Centrifugal Fan - CBM 9/9 4 Pole 550watt C VR1 x Electrostatic Precipitator - 1H x 3W1 x Elta Variable Speed Drive IP66 - 5.5KW
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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 ...