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)
2 x REU 7amp Speed control - Two Speed Five-Step Transformer - Trickle and Boost2 x Elta Variable Speed Drive IP66 - 2.2KW1 x Elta Variable Speed Drive IP66 - 7.5KW1 x FRQ-10A V2 Inverter Speed controller1 x Helios TSD 3.0 Transformer Speed Control (400v)1 x FU 15 40 Frequency Inverter1 x FU 075 52 Frequency Inverter (IP20)1 x FRQ5-4A V2 Inverter Speed Controller1 x Frequency converter FU 075 14 - IP661 x FU 22 25 Frequency Inverter2 x Elta Variable Speed Drive IP66 - 0.75KW2 x Elta Variable Speed Drive IP66 - 1.5KW1 x Frequency converter RUCK - FU 075 201 x Elta Variable Speed Drive IP66 - 4.0KW1 x FRQ5-10A Inverter Speed controller1 x FU 15 16 Frequency Inverter1 x Elta Variable Speed Drive IP66 - 5.5KW1 x Elta Variable Speed Drive IP66 - 2.2KW (1ph to 3ph)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 FU 22 04 Frequency Inverter1 x Frequency converter RUCK - FU 075 211 x FU 075 04 Frequency Inverter (IP20)1 x Elta 10 Amp Electronic single phase speed controller.1 x NKS-D swirl diffuser v-300 x 300mm1 x ELTA - Single Phase Transformer 2amps1 x Balance S Diffuser - NO RING - 125mm1 x Circular Ceiling Diffuser - TST 1254 x Electronic extractor fan speed controller - FSC 1.51 x Circular Ceiling Diffuser - TST 1002 x EC6H - Reversible Group Fan Electronic Controller1 x PCA Diffuser - PCA-3151 x Circular Ceiling Diffuser - TST 2001 x Curved Blade Grille 600x600 (2way blow)1 x Elta 2 Amp Electronic single phase speed controller.1 x 5-Speed Controller for use with Elta SAX Classic Fans1 x JSR 200 Painted RAL50182 x Elta 3 Amp Electronic single phase speed controller with TK1 x Round ceiling diffuser 400mm1 x Circular Ceiling Diffuser - TST 1601 x ELTA - Single Phase Transformer 16amps1 x ELTA - Single Phase Transformer 8amps1 x Airvent ceiling fan controller1 x Elta 3 Amp Electronic single phase speed controller.2 x Elta 6 Amp Electronic single phase speed controller with TK1 x EFSC-3N- Single Phase Speed Control1 x ELTA - Single Phase Transformer 12amps1 x Balance S Diffuser - NO RING - 100mm2 x AIRVENT speed control - AIR4019613 x COM-31 x Round ceiling diffuser 200mm1 x ELTA - Single Phase Transformer 4amps1 x Round ceiling diffuser 300mm1 x EFSC-6N- Single Phase Speed Control1 x PCA Diffuser - PCA-2502 x Elta 6 Amp Electronic single phase speed controller.1 x Round ceiling diffuser 350mm1 x ELTA - Single Phase Transformer 10amps3 x Remote Timer Control - 13511 x Run On Timer - 5s - 4hrs - RT5A3 x Push Timer Switch - ZA41 x Helios ZNE Electronic Fan Overrun Timer3 x Multi Input Run On Timer - 0 - 20min - CFCU1 x Time Delay Unit - DT20B1 x 7 Day Programmable TIMECLOCK1 x TTC-2000 Three phase electric heater controller1 x ACO8AC/EC AutoChangeover panel1 x Elta ACO Panel 149-ACO14E1 x EC-Vent control board1 x CONTROL ECOWATT - Basic1 x ACO 149-ACO1/EDV2 x MTP 10, 10K, Speed control1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 6301 x Elta ACO Panel 149-ACO18B1 x Systemair Save Connect 2.0 Internet Module1 x EC-Vent Room Unit1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 5001 x U-EK plastic housing IP65 - for use with the U-EK230E Motor Protection1 x EM30-24 Control Panel Commissioning Service1 x Easy-fix termination kit - High Rise Ventilator - EFT1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 3551 x Elta Wall Cowl SWC56/631 x GRA-100 External Grill by S&P1 x Elta Louvre Shutter - 400mm1 x Vent Axia ACM 100 T (Timer Model) inline mixed flow duct fan2 x Remote controller FLEX - for VEKO INT1 x HCFC 1.7 - Reversible Speed Controller for HCF sweep fans1 x Helios TSW 7.5 Amp Transformer speed controller2 x Vent Axia ACM 150 inline mixed flow duct fan1 x Transformer 5 Speed Controller - ATC1-12TK3 x Three Phase Transformer controllers - RMT 1.5 Amp1 x Vent Axia ACM 100 inline mixed flow duct fan1 x Isolator Switch - ISOSW2 x Single phase speed controller by auto-transformer - RMB 1.5 Amp1 x BEAS-control module1 x Envirovent Silent MV160/100T Mixvent - Timer Model - 100mm - (5 year warranty)2 x Envirovent G4 Filter - SL-G4/F72 x MWS 1.5 – Transformer Controller With Motor Protection2 x Vent Axia T-Series Controller2 x CPTA-S PIR SENSOR Volt Free Contacts - Surface Mounted2 x Speed Controller - REB51 x FAST-TRACK RANGE 75mm - Click Ring (1 bag of 10)2 x REB-CVF 0-10v Controller1 x Speed Controller - REB1-N2 x PIR Sensor - PIR22 x Speed Controller - REB12 x PIR Sensor - PIR41 x MTS10- extractor fan 3 step switch1 x UB47- Universal Insulated Terminal1 x Mini Diffuser - 100mm1 x Elta - Room Sensor - Temp/Humid/C021 x Contactor Interface Station - CI91 x SAVE VSR 300 heat recovery unit1 x Envirovent 4 Way Remote Control Switch - SWHBKRF-41 x Vent Axia ACM 150 T (Timer Model) inline mixed flow duct fan1 x REU 1.5amp Speed control - Two Speed Five-Step Transformer - Trickle and Boost2 x Transformer 5 Speed Controller - ATC1-10TK2 x Transformer 5 Speed Controller - ATC1-4TK2 x Transformer 5 Speed Controller - ATC1-8TK2 x Helios TSW 3 Amp Transformer speed controller1 x Helios TSW MCB Amp Transformer speed controller1 x Helios TSW 1.5 Amp Transformer speed controller1 x Vent Axia ACM 200 inline mixed flow duct fan2 x Vent Axia ACM 125 inline mixed flow duct fan1 x CS2 Current Switch1 x TG-K Duct temperature sensor1 x MWS 3 – Transformer Controller With Motor Protection1 x Single phase speed controller by auto-transformer - RMB 3.5 Amp1 x CMT-2 200/80 1.1KW - Single inlet centrifugal fan direct driven3 x WS - Reversing Switch from Helios Fans1 x Multiflow SMB550/4-1AC1 x Commercial Single or 3 phase Fan Reversing Switch - RS12 x Skyflow SSR Horizontal Roof Cowl SSR31/35BS1 x Transformer (silent) speed controller - RE 5.0 Amp1 x Single phase speed controller by auto-transformer - RMB 8.0 Amp1 x Helios HQW-630/4 - IP552 x Helios HQW-315/4 - IP551 x Silent 100 Window Kit - windowS1 x Helios HQW-200/4 - IP552 x Transformer (silent) speed controller - RE 3.0 Amp1 x Vent Axia Silent 100T (TIMER)2 x Helios HQW-250/4 - IP551 x Transformer Speed Control - RTRE- 1.5Amp1 x Bathroom Fan -Envirovent- Silent 100 T (Timer Model)1 x MEV Spider Wireless boost Switch - MEV-SWH-W1 x QPTW 250C Acoustic Twin Fan with Controller1 x TG-K Duct temperature sensor1 x DDMP 09/09 Mounting Flange1 x Quietflow SQS400-1ECL - Centrifugal Box Fan1 x Transformer Speed Control - RTRE- 12.0Amp1 x VTR 300 STD Filter Kit1 x DEF-CBM-RE-7 - Protection Guard1 x Compact SCD450/4-1AC1 x CBT-100N Centrifugal1 x LFBR 315 G4 - Helios Inline Filter Box - 315mm1 x AXC TP - 100mm Plastic Centrifugal Inline Fan1 x Elta Wall Cowl SWC35/401 x Elta Wall Cowl SWC25/31
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