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)
6 x Vent Axia ACM 125 T (Timer Model) inline mixed flow duct fan3 x Elta Variable Speed Drive IP66 - 2.2KW1 x Elta Variable Speed Drive IP66 - 7.5KW1 x FU 15 40 Frequency Inverter1 x FRQ-10A V2 Inverter Speed controller1 x FU 075 52 Frequency Inverter (IP20)1 x Helios TSD 3.0 Transformer Speed Control (400v)1 x Frequency converter FU 075 14 - IP661 x Elta Variable Speed Drive IP66 - 4.0KW1 x FRQ5-4A V2 Inverter Speed Controller4 x Elta Variable Speed Drive IP66 - 0.75KW1 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 Frequency converter RUCK - FU 075 201 x FU 22 25 Frequency Inverter1 x ELTA - Three Phase Transformer 10amps1 x FU 075 04 Frequency Inverter (IP20)1 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 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 7 Day Programmable TIMECLOCK1 x ACOAS/ AC/EC Auto Changeover 8Amp1 x ACO8AC/EC AutoChangeover panel1 x TTC-2000 Three phase electric heater controller1 x EM30-24 Electro-Mechanical Control Panel1 x Elta ACO Panel 149-ACO14E1 x CONTROL ECOWATT - Basic1 x EC-Vent control board1 x Elta ACO Panel 149-ACO18B1 x ACO 149-ACO1/EDV4 x Systemair Save Connect 2.0 Internet Module1 x EM30-24 Control Panel Commissioning Service1 x EC-Vent Room Unit2 x Elta 10 Amp Electronic single phase speed controller.2 x Vent Axia ACM 150 inline mixed flow duct fan1 x ELTA - Single Phase Transformer 2amps2 x Electronic extractor fan speed controller - FSC 1.51 x NKS-D swirl diffuser v-300 x 300mm3 x EC6H - Reversible Group Fan Electronic Controller1 x Balance S Diffuser - NO RING - 125mm1 x Circular Ceiling Diffuser - TST 1251 x Elta 2 Amp Electronic single phase speed controller.3 x Elta 3 Amp Electronic single phase speed controller with TK1 x Airvent ceiling fan controller5 x Elta 6 Amp Electronic single phase speed controller with TK1 x Elta 3 Amp Electronic single phase speed controller.1 x ELTA - Single Phase Transformer 12amps1 x Curved Blade Grille 600x600 (2way blow)3 x COM-31 x EFSC-3N- Single Phase Speed Control1 x Circular Ceiling Diffuser - TST 2001 x AIRVENT speed control - AIR4019611 x JSR 200 Painted RAL50181 x Circular Ceiling Diffuser - TST 1601 x Round ceiling diffuser 400mm1 x ELTA - Single Phase Transformer 4amps1 x EFSC-6N- Single Phase Speed Control1 x Round ceiling diffuser 300mm3 x Three Phase Transformer controllers - RMT 1.5 Amp1 x Elta 6 Amp Electronic single phase speed controller.1 x Round ceiling diffuser 200mm1 x Balance S Diffuser - NO RING - 100mm1 x PCA Diffuser - PCA-2501 x ELTA - Single Phase Transformer 10amps1 x Round ceiling diffuser 350mm2 x TG-K Duct temperature sensor3 x Isolator Switch - ISOSW3 x Remote Timer Control - 13512 x BEAS-control module3 x Speed Controller - REB53 x MWS 1.5 – Transformer Controller With Motor Protection1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 6303 x REB-CVF 0-10v Controller1 x Envirovent 4 Way Remote Control Switch - SWHBKRF-45 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 PCA Diffuser - PCA-3151 x Circular Ceiling Diffuser - TST 1001 x ELTA - Single Phase Transformer 16amps2 x Vent Axia ACM 200 inline mixed flow duct fan1 x Round ceiling diffuser 250mm2 x CS2 Current Switch3 x Transformer speed controller - ATC1 - 1.5 Amps5 x Single phase speed controller by auto-transformer - RMB 1.5 Amp1 x Envirovent Silent MV160/100T Mixvent - Timer Model - 100mm - (5 year warranty)4 x Transformer (silent) speed controller - RE 3.0 Amp2 x Helios TSW 7.5 Amp Transformer speed controller2 x Transformer 5 Speed Controller - ATC1-8TK2 x Transformer 5 Speed Controller - ATC1-4TK2 x Transformer 5 Speed Controller - ATC1-10TK3 x Transformer 5 Speed Controller - ATC1-12TK1 x Helios TSW 3 Amp Transformer speed controller4 x Vent Axia ACM 125 inline mixed flow duct fan1 x Envirovent G4 Filter - SL-G4/F72 x Single phase speed controller by auto-transformer - RMB 8.0 Amp2 x CPTA-S PIR SENSOR Volt Free Contacts - Surface Mounted2 x REE-1 Electronic Speed Controller1 x Isolator Switch - EFF-ISO1 x Transformer Speed Control - RTRE- 12.0Amp2 x Silent 100 Window Kit - windowS3 x Speed Controller - REB1-N3 x MTP 10, 10K, Speed control1 x Easy-fix termination kit - High Rise Ventilator - EFT1 x Quietflow SQS400-1ECL - Centrifugal Box Fan1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 5002 x SG-200 Fan Guard for the HQW 2001 x 220x90mm Insulated Rectangular Horizontal 90° Bend2 x Remote controller FLEX - for VEKO INT3 x S&P MULTI-REG EC FAN CONTROLLER / INTERFACE1 x Helios TSW 0.3Amp Compact Transformer speed controller2 x Vent Axia ACM 100 inline mixed flow duct fan2 x MWS 3 – Transformer Controller With Motor Protection2 x Single phase speed controller by auto-transformer - RMB 3.5 Amp1 x Helios HQW-630/4 - IP553 x TG-K3/NTC10-01 - Duct temperature sensor2 x Vent Axia T-Series Controller2 x Multiflow SMB550/4-1AC2 x TG-R room temperature sensor4 x WS - Reversing Switch from Helios Fans3 x Temperature Fan Speed Controller - ATCP4-WMS2 x Helios TSW MCB Amp Transformer speed controller2 x MV-B Dual Switch for use with Helios HQW plate fans,1 x Transformer (silent) speed controller - RE 1.5 Amp3 x Skyflow SSR Horizontal Roof Cowl SSR31/35BS3 x Helios HQW-200/4 - IP551 x Speed Controller - REB102 x Commercial Single or 3 phase Fan Reversing Switch - RS11 x RDS 11 Helios Transformer Controller With Motor Protection2 x PIR Sensor - PIR22 x FAST-TRACK RANGE 75mm - Click Ring (1 bag of 10)1 x KKS 100 silencer-section - For use with the MUB 100 size Fans.1 x Helios PU10 Speed Potentiometer (Flush Mounted)1 x DDMP 12-12 3F 1810W M6A4 DG01 x KMBI 225 Connector rectangular/circular to install on the discharge of CMT1 x Helios TSW 1.5 Amp Transformer speed controller1 x CBS-60 Outlet Flange for CSB/CBT-601 x TUNE-R-200-3-M1 - Control Damper1 x Elta Variable Speed Drive IP66 - 0.37KW (1ph to 3ph)1 x U-EK plastic housing IP65 - for use with the U-EK230E Motor Protection1 x PIR Sensor - PIR41 x Helios HQW-250/4 - IP551 x Helios HQW-315/4 - IP551 x Transformer Speed Control - RTRE- 7.0Amp1 x 220x90mm Insulated Rectangular Vertical 90° Bend
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