Non Return Valves & Shutters

Non Return Shutters

Displaying 1 to 16 (of 16 products)
Backdraft Dampers - BDP
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
Backdraught Shutters 039-SFSV-63/71
£ 192.96
Backdraught Shutters 039-SFSV-63/71 Back draft shutter for SSRL 710...
BDS 200/250 RA b/d shutter
BDS 200/250 RA b/d shutter
£ 59.07
BDS 200/250 RA b/d shutter...
BDS 300/315 RA b/d shutter
BDS 300/315 RA b/d shutter
£ 72.20
BDS 300/315 RA b/d shutter...
BDS 350 RA b/d shutter
BDS 350 RA b/d shutter
£ 90.13
BDS 350 RA b/d shutter...
BDS 400/450 RA b/d shutter
BDS 400/450 RA b/d shutter
£ 95.33
BDS 400/450 RA b/d shutter...
BDS 500/560 RA b/d shutter
BDS 500/560 RA b/d shutter
£ 114.39
BDS 500/560 RA b/d shutter...
BDS 630/710 RA b/d shutter
BDS 630/710 RA b/d shutter
£ 144.13
BDS 630/710 RA b/d shutter...
BDS 800 RA b/d shutter
BDS 800 RA b/d shutter
£ 171.71
BDS 800 RA b/d shutter...
Flanged Damper 019-0250-STD
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
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...
Helios Condense Collector
Helios Condense Collector
£ 168.68
Helios Condense Collector...
JCA 560 - Back Draft Shutter for CRHB/CRHT Roof Fans
JCA 560 - Back Draft Shutter for CRHB/CRHT Roof Fans
£ 186.32
JCA 560 - Back Draft Shutter for CRHB/CRHT Roof Mounted Units...
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
RSK355 - Back Draught Shutter
£ 82.95
Back Draught Shutter for duct installation Galvanized sheet steel housing Aluminium flaps ...
VKS 355-500 Automatic shutter
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 Circular Ceiling Diffuser - TST 2001 x Curved Blade Grille 600x600 (2way blow)1 x Round ceiling diffuser 200mm2 x Push Timer Switch - ZA41 x Time Delay Unit - DT20B1 x TTC-2000 Three phase electric heater controller1 x ACOAS/ AC/EC Auto Changeover 8Amp1 x Multi Input Run On Timer - 0 - 20min - CFCU3 x Vent Axia ACM 125 T (Timer Model) inline mixed flow duct fan1 x Balance S Diffuser - NO RING - 100mm2 x Remote Timer Control - 13511 x Elta 3 Amp Electronic single phase speed controller with TK1 x EM30-24 Electro-Mechanical Control Panel3 x Vent Axia ACM 100 T (Timer Model) inline mixed flow duct fan1 x HCFC 1.7 - Reversible Speed Controller for HCF sweep fans1 x Helios ZNE Electronic Fan Overrun Timer2 x 7 Day Programmable TIMECLOCK2 x Envirovent Silent MV160/100T Mixvent - Timer Model - 100mm - (5 year warranty)2 x BEAS-control module2 x Elta 6 Amp Electronic single phase speed controller with TK1 x ACO8AC/EC AutoChangeover panel1 x Circular Ceiling Diffuser - TST 1251 x JSR 200 Painted RAL50181 x Circular Ceiling Diffuser - TST 1602 x Systemair Save Connect 2.0 Internet Module1 x Round ceiling diffuser 350mm2 x Vent Axia ACM 125 inline mixed flow duct fan1 x CONTROL ECOWATT - Basic2 x TG-K3/NTC10-01 - Duct temperature sensor1 x EC-Vent control board3 x Transformer (silent) speed controller - RE 3.0 Amp1 x Airvent ceiling fan controller1 x ACO 149-ACO1/EDV2 x Transformer 5 Speed Controller - ATC1-12TK2 x Vent Axia ACM 100 inline mixed flow duct fan2 x Transformer speed controller - ATC1 - 1.5 Amps3 x Isolator Switch - ISOSW2 x Single phase speed controller by auto-transformer - RMB 1.5 Amp2 x TG-R room temperature sensor1 x Transformer 5 Speed Controller - ATC1-4TK3 x Vent Axia ACM 200 inline mixed flow duct fan2 x MWS 1.5 – Transformer Controller With Motor Protection1 x U-EK plastic housing IP65 - for use with the U-EK230E Motor Protection1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 5001 x EM30-24 Control Panel Commissioning Service3 x Speed Controller - REB1-N1 x MTP 10, 10K, Speed control2 x Helios HQW-315/4 - IP552 x S&P MULTI-REG EC FAN CONTROLLER / INTERFACE1 x Transformer 5 Speed Controller - ATC1-2TK1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 3551 x DEF-140T Inlet Guard for the CBT-100N1 x TG-K Duct temperature sensor4 x PIR Sensor - PIR21 x Vent Axia Silent 100T (TIMER)1 x MTS10- extractor fan 3 step switch1 x Transformer Speed Control - RTRE- 1.5Amp1 x CMT-2 200/80 1.1KW - Single inlet centrifugal fan direct driven1 x Helios HQW-200/4 - IP552 x Multiflow SMB550/4-1AC1 x Transformer (silent) speed controller - RE 5.0 Amp1 x WS - Reversing Switch from Helios Fans2 x CBS-60 Outlet Flange for CSB/CBT-601 x Speed Controller - REB51 x KMBI 180 Connector rectangular/circular to install on the discharge of CMT2 x Transformer (silent) speed controller - RE 1.5 Amp2 x Single phase speed controller by auto-transformer - RMB 10.0 Amp1 x Skyflow SSR Horizontal Roof Cowl SSR31/35B1 x Speed Controller - REB101 x CMT-2 225/090 1.1KW - Single inlet centrifugal fan direct driven1 x ELM 18 EX Flexible Cuff for ERM 181 x SG-200 Fan Guard for the HQW 2001 x Helios TSW 0.3Amp Compact Transformer speed controller2 x Helios TSW 1.5 Amp Transformer speed controller1 x MV-B Dual Switch for use with Helios HQW plate fans,1 x CS2 Current Switch1 x Helios HQW-200/2 - IP551 x Vent Axia ACM 150 inline mixed flow duct fan1 x Transformer 5 Speed Controller - ATC1-10TK1 x Transformer 5 Speed Controller - ATC1-8TK1 x Single phase speed controller by auto-transformer - RMB 3.5 Amp1 x Helios PU10 Speed Potentiometer (Flush Mounted)2 x REB-CVF 0-10v Controller2 x Bathroom Fan -Envirovent- Silent 100 T (Timer Model)1 x Helios HQW-250/4 - IP551 x CBM 9-9 550w 4P VR (Open Motor)2 x TD Mixvent 800/200 EEXEIIT31 x DDMP 12-12 3F 1810W M6A4 DG02 x UB47- Universal Insulated Terminal1 x QPTW 250C Acoustic Twin Fan with Controller1 x CBA-60 Inlet Flange for CBT-601 x GRA-100 External Grill by S&P1 x Speed Controller - REB11 x Elta Louvre Shutter - 400mm2 x PIR Sensor - PIR41 x CBM Low Pressure Centrifugal Fan - CBM 10/10 4 Pole 550watt CVR1 x RDH FLEX-SQUARE - ADH/RDH 04501 x EBM-Papst D4E225-BC01-17 Double inlet
Reviews
DAOSL Back Draft Damper
DAOSL Back Draft Damper
£ 11.49

Look good, works well, except the shaft of the lanellae cuts...