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)
3 x Elta Variable Speed Drive IP66 - 2.2KW1 x FU 15 40 Frequency Inverter2 x FRQ5-4A V2 Inverter Speed Controller1 x FRQ-10A V2 Inverter Speed controller1 x Helios TSD 3.0 Transformer Speed Control (400v)3 x Elta Variable Speed Drive IP66 - 0.75KW1 x FU 075 52 Frequency Inverter (IP20)1 x FU 22 25 Frequency Inverter2 x Elta Variable Speed Drive IP66 - 1.5KW1 x Frequency converter RUCK - FU 075 203 x Elta Variable Speed Drive IP66 - 4.0KW1 x Frequency converter FU 075 14 - IP662 x FRQ5-10A Inverter Speed controller2 x Elta 10 Amp Electronic single phase speed controller.1 x FU 15 16 Frequency Inverter2 x Elta Variable Speed Drive IP66 - 5.5KW2 x ELTA - Three Phase Transformer 3amps1 x ELTA - Three Phase Transformer 10amps1 x Elta Variable Speed Drive IP66 - 2.2KW (1ph to 3ph)1 x ATEX rated 3-phase Speed Control - R-DK4 KT (EX)1 x FU 075 04 Frequency Inverter (IP20)1 x Frequency converter RUCK - FU 075 211 x FU 22 04 Frequency Inverter1 x Helios - FIUK-11KW 24.0A - FREQUENCY INVERTER1 x ELTA - Single Phase Transformer 2amps4 x Electronic extractor fan speed controller - FSC 1.54 x EC6H - Reversible Group Fan Electronic Controller2 x Elta 2 Amp Electronic single phase speed controller.1 x 5-Speed Controller for use with Elta SAX Classic Fans2 x Elta 3 Amp Electronic single phase speed controller with TK1 x ELTA - Single Phase Transformer 8amps4 x Elta 6 Amp Electronic single phase speed controller with TK1 x ELTA - Single Phase Transformer 16amps2 x Airvent ceiling fan controller1 x ELTA - Single Phase Transformer 12amps1 x ELTA - Single Phase Transformer 4amps4 x AIRVENT speed control - AIR4019614 x COM-33 x Elta 6 Amp Electronic single phase speed controller.1 x EFSC-6N- Single Phase Speed Control1 x ELTA - Single Phase Transformer 10amps1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 5001 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 6301 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 Elta Wall Cowl SWC45/501 x Elta Wall Cowl SWC25/311 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 7101 x Jet Cowl - 315mm1 x Egg Crate Grille with G2 Dust panel filter 1 inch- 300x3004 x Multi Input Run On Timer - 0 - 20min - CFCU5 x Vent Axia ACM 100 T (Timer Model) inline mixed flow duct fan3 x Vent Axia ACM 150 T (Timer Model) inline mixed flow duct fan2 x Remote controller FLEX - for VEKO INT3 x Helios TSW 7.5 Amp Transformer speed controller4 x REU 1.5amp Speed control - Two Speed Five-Step Transformer - Trickle and Boost2 x HCFC 1.7 - Reversible Speed Controller for HCF sweep fans2 x Vent Axia ACM 150 inline mixed flow duct fan3 x Three Phase Transformer controllers - RMT 1.5 Amp4 x Helios TSW MCB Amp Transformer speed controller6 x Helios TSW 1.5 Amp Transformer speed controller2 x Vent Axia ACM 200 inline mixed flow duct fan6 x Single phase speed controller by auto-transformer - RMB 1.5 Amp1 x BEAS-control module3 x Vent Axia T-Series Controller3 x MWS 1.5 – Transformer Controller With Motor Protection2 x Envirovent G4 Filter - SL-G4/F72 x Envirovent Silent MV160/100T Mixvent - Timer Model - 100mm - (5 year warranty)5 x Transformer (silent) speed controller - RE 3.0 Amp1 x CPTA-S PIR SENSOR Volt Free Contacts - Surface Mounted4 x Speed Controller - REB1-N2 x Commercial Single or 3 phase Fan Reversing Switch - RS13 x REB-CVF 0-10v Controller2 x Multiflow SMB550/4-1AC6 x Speed Controller - REB16 x MTS10- extractor fan 3 step switch2 x Quietflow SQS400-1ECL - Centrifugal Box Fan4 x PIR Sensor - PIR21 x MEV Spider Wireless boost Switch - MEV-SWH-W1 x Bathroom Fan -Envirovent- Silent 100 T (Timer Model)4 x PIR Sensor - PIR46 x QPTW 250C Acoustic Twin Fan with Controller4 x UB47- Universal Insulated Terminal1 x Silentub - STUB 1003 x Elta - Room Sensor - Temp/Humid/C021 x Compact SCD450/4-1AC1 x VEKA INT 2000/15.0-L1 EKO3 x ACO8AC/EC AutoChangeover panel2 x CO2 Room Sensor - CO2-R1 x Biflow SB400-CON2-3 - High Temperature Bifurcated Fan3 x Envirovent 4 Way Remote Control Switch - SWHBKRF-45 x Vent Axia ACM 125 T (Timer Model) inline mixed flow duct fan4 x Systemair Save Connect 2.0 Internet Module4 x CS2 Current Switch5 x Transformer 5 Speed Controller - ATC1-4TK3 x Transformer 5 Speed Controller - ATC1-10TK2 x Helios TSW 3 Amp Transformer speed controller4 x DEF-140T Inlet Guard for the CBT-100N1 x 7 Day Programmable TIMECLOCK5 x Vent Axia ACM 125 inline mixed flow duct fan2 x Two Speed Switch - REGUL-23 x Single phase speed controller by auto-transformer - RMB 8.0 Amp3 x Isolator Switch - ISOSW3 x WS - Reversing Switch from Helios Fans2 x Single phase speed controller by auto-transformer - RMB 3.5 Amp3 x TG-R room temperature sensor4 x Speed Controller - REB104 x Helios HQW-315/4 - IP553 x Transformer Speed Control - RTRE- 1.5Amp4 x Helios HQW-630/4 - IP552 x TD Mixvent 800/200 EEXEIIT33 x Silent 100 Window Kit - windowS3 x Speed Controller - REB52 x Helios HQW-200/4 - IP554 x Speed Controller - REB83 x Helios HQW-250/4 - IP555 x VTR 300 STD Filter Kit4 x Speed Controller - REB2.5-N3 x TG-K Duct temperature sensor1 x GENIOX 11 Internal Mounted Unit1 x VTR 500 STD Filter Kit1 x CBM Low Pressure Centrifugal Fan - CBM 9/7 4 Pole 373watt CVR1 x Potentiometer EGH 01 - for DDMP Fans1 x CBM Low Pressure Centrifugal Fan - CBM 12/12 6 Pole 736watt CVR1 x Round ceiling diffuser 250mm1 x CBT-130N Centrifugal ATEX II 3D ExtD 125*C1 x AXC TP - 100mm Plastic Centrifugal Inline Fan1 x Contactor Interface Station - CI91 x CFI In-line 150 - Carbon Filter1 x Duct Termination with Mesh - 100mm1 x ACOAS/ AC/EC Auto Changeover 8Amp1 x CBM 7/7 147w 4P RE-VR1 x KBA- Inlet Mounting 2251 x Helios ESA-1 Surface mounted Speed Control 1amp4 x DEF-CBM-RE-7 - Protection Guard1 x Flakt Woods ME 1.3 speed controller 3amp - EA9011581 x TUNE-R-250-3-M0 - Control Damper (NO ACTUATOR)1 x Vent Axia Trickle & Boost Switch1 x Helios HQW-355/4 - IP551 x 100mm Round Connector with Damper1 x Flakt Woods ME 1.6 speed controller 6.0amp - EA9011591 x Egg Crate Grille with Dust panel filter 1 inch- 595x5951 x Elta SCP400/4-1AC - IP553 x CPTA-E Flush mounted PIR sensor with timer1 x Temperature Fan Speed Controller - ATCP4-WMS2 x S&P MULTI-REG EC FAN CONTROLLER / INTERFACE4 x REU 7amp Speed control - Two Speed Five-Step Transformer - Trickle and Boost2 x Transformer 5 Speed Controller - ATC1-8TK1 x Push Timer Switch - ZA42 x RDS 11 Helios Transformer Controller With Motor Protection1 x Capacitor 2uf for use with the EBM A4E range3 x KMBI 225 Connector rectangular/circular to install on the discharge of CMT2 x Single phase speed controller by auto-transformer - RMB 10.0 Amp2 x MV-B Dual Switch for use with Helios HQW plate fans,1 x TD EVO-100 PF ECOWATT - Environmentally Friendly Energy Efficient Inline Fan1 x Speed Controller - REB32 x Transformer Speed Control - RTRE- 12.0Amp2 x MWS 3 – Transformer Controller With Motor Protection5 x TG-K3/NTC10-01 - Duct temperature sensor2 x Transformer (silent) speed controller - RE 1.5 Amp1 x Helios HQW-200/2 - IP552 x ENV 100 12v transformer SELV4 x CBM Low Pressure Centrifugal Fan - CBM 10/10 4 Pole 550watt CVR3 x MTP 10, 10K, Speed control2 x Helios PU10 Speed Potentiometer (Flush Mounted)3 x SG-200 Fan Guard for the HQW 2001 x KKS 100 silencer-section - For use with the MUB 100 size Fans.1 x Skyflow SSR Horizontal Roof Cowl SSR31/35BS4 x Transformer Speed Control - RTRE- 7.0Amp2 x Vent Axia Silent 100T (TIMER)1 x Quietflow SQS100-1ECL - Centrifugal Box Fan1 x TD160-NT Mixvent - 100mm - TD160 Timer1 x DS-2 2-Speed Switch (3 Phase)2 x Electrostatic Precipitator - 1H x 3W1 x Singleflow SSDL315-1EC2 x LFBR 315 G4 - Helios Inline Filter Box - 315mm1 x EBM-Papst D3G133-BF05-14 Double inlet1 x CSB-60 Centrifugal fan1 x Round ceiling diffuser 200mm1 x CBA-100 Inlet Flange for CBT-1001 x Duct Termination with Mesh - 355mm1 x HIMF - Mixed Flow Fan 100mm Inline Fan1 x CBP-18/18-RC Belt Driven Centrifugal Fans3 x CBT-100N Centrifugal1 x CBT-80N Centrifugal1 x Lo-Carbon Silhouette 100T (Timer)1 x SPI-100 C Iris damper1 x WSD 100 (1060x1060x70)1 x ACO3TO-ADS-VFC-7.1A1 x CBM Low Pressure Centrifugal Fan - CBM 9/9 4 Pole 550watt 3V (3-Speed)1 x DDMP 07/07 Mounting Flange1 x TDP-D Pressure Sensor with Display1 x MWS 5 – Transformer Controller With Motor Protection Unit1 x RTRD - Three Phase Speed Controller - 2 Amp1 x Helios TSW 0.3Amp Compact Transformer speed controller1 x Transformer 5 Speed Controller - ATC1-12TK1 x RTRD - Three Phase Speed Controller - 4 Amp2 x TEM 075 - 5 Speed Transformer Speed Control1 x RR EC 160 Centrifugal inline fan - Energy Efficient Motor1 x Transformer (silent) speed controller - RE 5.0 Amp3 x Transformer Speed Control - RTRE- 5.0Amp1 x Vent Axia SC5001 - Speed controller2 x CBA-60 Inlet Flange for CBT-603 x DDMP 09-09 3F 2130W M6A4 DG01 x Remote Timer Control - 13512 x CMT-2 225/090 1.1KW - Single inlet centrifugal fan direct driven2 x CBS-60 Outlet Flange for CSB/CBT-601 x FFR 355 Filter Cassette1 x Elta Variable Speed Drive IP66 - 7.5KW4 x DDMP 09/09 Mounting Flange1 x Elta 3 Amp Electronic single phase speed controller.1 x TUNE-R-200-3-M4 - Control Damper1 x GXC6EC - High Performance Extract Fan3 x SAVE VSR 300 heat recovery unit2 x Elta Variable Speed Drive IP66 - 0.37KW (1ph to 3ph)1 x CBM 9-9 550w 4P VR (Open Motor)1 x SD-MUB Vibration pad set1 x Comefri - TLZ 225 R - High Performance Scroll Fan1 x Flakt Woods ME 1.1 speed controller 1amp - EA9011571 x Flat Roof Terminal -OFT 5 - Asphalt1 x Twinflow STDL315-1EC1 x Run On Timer - 5s - 4hrs - RT5A1 x Single Deflection Grille 400mm with OBD damper1 x CBB-60N Centrifugal1 x DDMP 10-10 1F 1000W M6A2 DA51 x CBM Low Pressure Centrifugal Fan - CBM 9/9 4 Pole 550watt C VR1 x Quietflow Twin SQTDCV250-1ECL1 x Transformer 5 Speed Controller - ATC1-2TK1 x RDS 7 Helios Transformer Controller With Motor Protection2 x Transformer speed controller - ATC1 - 1.5 Amps2 x Round ceiling diffuser 400mm2 x DDMP 10-08 3F 2210W M6A4 DG01 x TUNE-R-315-3-M4 - Control Damper1 x TUNE-R-200-3-M2 - Control Damper2 x DDMP 12-12 3F 1810W M6A4 DG01 x Mini Diffuser - 100mm1 x Vertical Cowl and Fan (Single Phase) - RAV400-4-11 x 110 x 54mm Round to Rectangular Adaptor - Long1 x TUNE-R-200-3-M0 - Control Damper (NO ACTUATOR)1 x CBM Low Pressure Centrifugal Fan - CBM 10/10 4 Pole 550watt VR1 x Comefri - TLZ 560 R - High Performance Scroll Fan1 x TUNE-R-200-3-M3 - Control Damper1 x MWS-75 Transformer controller with TK -7.5A1 x ELM 18 EX Flexible Cuff for ERM 181 x RSK355 - Back Draught Shutter1 x KAD-355-F400 Rectangle Flexible Connector1 x IR24-P - Presence detector1 x DDMP 10-08 FLANGE1 x Helios RR-250-C Centrifugal inline fan1 x Temperature Controller - EDTW1 x KMBI 180 Connector rectangular/circular to install on the discharge of CMT1 x Isolator Switch - EFF-ISO1 x Rectangular Airbrick Adaptor1 x Elta Standard Ambient Flexible Connector - 560mm1 x CK-60F Kit2 x TUNE-R-200-3-M1 - Control Damper1 x REE-1 Electronic Speed Controller1 x Control switch - CR1501 x Vortice Quadro Micro 100 I - Standard Version1 x 220x90mm Insulated Rectangular Vertical 90° Bend1 x FAST-TRACK RANGE 75mm - Click Ring (1 bag of 10)1 x Step switch S-5EC, 0-10V1 x Skyflow SSR Horizontal Roof Cowl SSR31/35B1 x KMBI 315 Connector rectangular/circular to install on the discharge of CMT1 x KBA- Inlet Mounting 2801 x CMT/4-315/130-4KW - Single inlet centrifugal fan direct driven1 x 204x60mm Insulated Rectangular Vertical 45° Bend1 x CMT/4-280-115 2.2KW - Single inlet centrifugal fan direct driven ( LG-90)
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Transformer (silent) speed controller - RE 1.5 Amp
£ 132.29
Unbelievable! With TDmixvent500: noise reduction minimum 50%...