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)
8 x Vent Axia ACM 150 inline mixed flow duct fan6 x Vent Axia ACM 200 inline mixed flow duct fan6 x Vent Axia ACM 100 inline mixed flow duct fan4 x Elta Variable Speed Drive IP66 - 2.2KW2 x Elta Variable Speed Drive IP66 - 7.5KW1 x Helios TSD 3.0 Transformer Speed Control (400v)1 x FRQ-10A V2 Inverter Speed controller1 x Helios TSD 5.5 Transformer Speed Control (400v)1 x FU 15 40 Frequency Inverter1 x FRQ5-4A V2 Inverter Speed Controller1 x FU 075 52 Frequency Inverter (IP20)1 x FU 22 25 Frequency Inverter3 x Elta Variable Speed Drive IP66 - 0.75KW1 x Frequency converter FU 075 14 - IP661 x Frequency converter RUCK - FU 075 203 x Elta Variable Speed Drive IP66 - 4.0KW3 x Elta Variable Speed Drive IP66 - 1.5KW1 x FU 15 16 Frequency Inverter4 x Elta Variable Speed Drive IP66 - 5.5KW5 x FRQ5-10A Inverter Speed controller3 x Elta 10 Amp Electronic single phase speed controller.1 x ATEX rated 3-phase Speed Control - R-DK4 KT (EX)2 x ELTA - Three Phase Transformer 3amps1 x Frequency converter RUCK - FU 075 381 x Frequency converter RUCK - FU 075 211 x FU 22 04 Frequency Inverter1 x NKS-D swirl diffuser v-300 x 300mm1 x FU 075 04 Frequency Inverter (IP20)1 x Helios - FIUK-11KW 24.0A - FREQUENCY INVERTER1 x Circular Ceiling Diffuser - TST 1251 x PCA Diffuser - PCA-3151 x ELTA - Single Phase Transformer 2amps1 x Circular Ceiling Diffuser - TST 1001 x Balance S Diffuser - NO RING - 125mm1 x Circular Ceiling Diffuser - TST 2002 x Round ceiling diffuser 400mm1 x Curved Blade Grille 600x600 (2way blow)1 x JSR 200 Painted RAL50187 x EC6H - Reversible Group Fan Electronic Controller1 x Versio Square Ceiling Diffusers - RS141 x Circular Ceiling Diffuser - TST 1601 x Balance S Diffuser - NO RING - 100mm2 x Round ceiling diffuser 200mm3 x Elta 3 Amp Electronic single phase speed controller with TK1 x EFSC-3N- Single Phase Speed Control1 x ELTA - Single Phase Transformer 16amps4 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 8amps5 x Airvent ceiling fan controller4 x Round ceiling diffuser 250mm1 x ELTA - Single Phase Transformer 12amps1 x ELTA - Single Phase Transformer 4amps6 x AIRVENT speed control - AIR4019611 x Round ceiling diffuser 350mm7 x Elta Variable Speed Drive IP66 - 0.37KW (1ph to 3ph)4 x COM-34 x Elta 6 Amp Electronic single phase speed controller.1 x PCA Diffuser - PCA-2501 x EFSC-6N- Single Phase Speed Control1 x Elta Variable Speed Drive IP66 - 0.75KW (1ph to 3ph)1 x ELTA - Single Phase Transformer 10amps2 x Elta Variable Speed Drive IP66 - 1.5KW (1ph to 3ph)3 x Remote Timer Control - 13512 x Run On Timer - 5s - 4hrs - RT5A4 x Helios ZNE Electronic Fan Overrun Timer2 x Push Timer Switch - ZA41 x Time Delay Unit - DT20B10 x Multi Input Run On Timer - 0 - 20min - CFCU3 x 7 Day Programmable TIMECLOCK1 x TTC-2000 Three phase electric heater controller3 x ACOAS/ AC/EC Auto Changeover 8Amp5 x ACO8AC/EC AutoChangeover panel1 x Elta ACO Panel 149-ACO14E1 x CONTROL ECOWATT - Basic3 x Envirovent G4 Filter - SL-G4/F73 x Envirovent 4 Way Remote Control Switch - SWHBKRF-45 x Vent Axia ACM 100 T (Timer Model) inline mixed flow duct fan6 x Vent Axia ACM 125 T (Timer Model) inline mixed flow duct fan4 x Remote controller FLEX - for VEKO INT4 x Helios TSW 7.5 Amp Transformer speed controller2 x Transformer 5 Speed Controller - ATC1-10TK6 x Transformer 5 Speed Controller - ATC1-4TK3 x HCFC 1.7 - Reversible Speed Controller for HCF sweep fans3 x Transformer 5 Speed Controller - ATC1-8TK6 x Helios TSW 3 Amp Transformer speed controller2 x Three Phase Transformer controllers - RMT 1.5 Amp7 x CS2 Current Switch4 x Isolator Switch - ISOSW6 x Single phase speed controller by auto-transformer - RMB 1.5 Amp2 x Single phase speed controller by auto-transformer - RMB 3.5 Amp3 x Single phase speed controller by auto-transformer - RMB 8.0 Amp2 x BEAS-control module6 x Envirovent Silent MV160/100T Mixvent - Timer Model - 100mm - (5 year warranty)3 x WS - Reversing Switch from Helios Fans2 x Helios HQW-200/2 - IP551 x ACO 149-ACO1/EDV1 x EM30-24 Electro-Mechanical Control Panel3 x Transformer Speed Control - RTRE- 12.0Amp4 x Helios HQW-630/4 - IP555 x Transformer (silent) speed controller - RE 3.0 Amp1 x U-EK plastic housing IP65 - for use with the U-EK230E Motor Protection1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 5002 x Electronic extractor fan speed controller - FSC 1.51 x EC-Vent Room Unit1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 6301 x Elta ACO Panel 149-ACO18B3 x Temperature Fan Speed Controller - ATCP4-WMS5 x S&P MULTI-REG EC FAN CONTROLLER / INTERFACE3 x Transformer 5 Speed Controller - ATC1-12TK2 x Helios TSW 0.3Amp Compact Transformer speed controller5 x Helios TSW 1.5 Amp Transformer speed controller4 x Systemair Save Connect 2.0 Internet Module4 x Vent Axia ACM 125 inline mixed flow duct fan3 x MWS 3 – Transformer Controller With Motor Protection2 x TG-K Duct temperature sensor5 x RRB- transformer controller1 x Two Speed Switch - REGUL-25 x Vent Axia T-Series Controller1 x Easy-fix termination kit - High Rise Ventilator - EFT3 x Helios HQW-200/4 - IP552 x CPTA-S PIR SENSOR Volt Free Contacts - Surface Mounted6 x Speed Controller - REB52 x REE-1 Electronic Speed Controller3 x Transformer (silent) speed controller - RE 1.5 Amp1 x EM30-24 Control Panel Commissioning Service1 x TG-R room temperature sensor5 x Transformer 5 Speed Controller - ATC1-2TK2 x Helios TSW MCB Amp Transformer speed controller2 x KMBI 225 Connector rectangular/circular to install on the discharge of CMT1 x PML230-TF, AC 230V Damper Actuator, Spring Return, 2 x SPDT, 72C Thermal Fuse3 x DEF-140T Inlet Guard for the CBT-100N3 x CMT-2 200/80 1.1KW - Single inlet centrifugal fan direct driven2 x MWS 1.5 – Transformer Controller With Motor Protection3 x KMBI 180 Connector rectangular/circular to install on the discharge of CMT4 x TG-K3/NTC10-01 - Duct temperature sensor2 x CBS-60 Outlet Flange for CSB/CBT-603 x Speed Controller - REB102 x FAST-TRACK RANGE 75mm - Click Ring (1 bag of 10)4 x Transformer Speed Control - RTRE- 7.0Amp4 x Speed Controller - REB1-N4 x REB-CVF 0-10v Controller3 x KMBI 250 Connector rectangular/circular to install on the discharge of CMT4 x RDS 11 Helios Transformer Controller With Motor Protection5 x Skyflow SSR Horizontal Roof Cowl SSR31/35B1 x Isolator Switch - EFF-ISO3 x Helios HQW-315/4 - IP554 x Skyflow SSR Horizontal Roof Cowl SSR31/35BS1 x Elta Wall Cowl SWC56/632 x Quietflow SQS400-1ECL - Centrifugal Box Fan6 x MTP 10, 10K, Speed control2 x Helios PU10 Speed Potentiometer (Flush Mounted)8 x Transformer Speed Control - RTRE- 1.5Amp3 x SG-200 Fan Guard for the HQW 2005 x PIR Sensor - PIR26 x MTS10- extractor fan 3 step switch2 x TUNE-R-200-3-M1 - Control Damper1 x Elta Wall Cowl SWC35/401 x GRA-100 External Grill by S&P4 x Transformer speed controller - ATC1 - 1.5 Amps1 x Single phase speed controller by auto-transformer - RMB 10.0 Amp3 x Commercial Single or 3 phase Fan Reversing Switch - RS13 x REE-2 Electronic Speed Controller1 x CBA-60 Inlet Flange for CBT-602 x Bathroom Fan -Envirovent- Silent 100 T (Timer Model)6 x Speed Controller - REB11 x Elta Wall Cowl SWC45/505 x Vent Axia Silent 100T (TIMER)1 x Elta Wall Cowl SWC25/312 x DEF-CBM-RE-7 - Protection Guard3 x Helios HQW-250/4 - IP552 x TD Mixvent 800/200 EEXEIIT32 x Vent Axia ACM 150 T (Timer Model) inline mixed flow duct fan1 x Three Phase 3 step - 10amp Transformer controller for use with the HV Wall Mounted fans.1 x ERR 20/1 Centrifugal inline fan2 x Transformer (silent) speed controller - RE 5.0 Amp1 x RDH FLEX-SQUARE - ADH/RDH 04505 x PIR Sensor - PIR44 x QPTW 250C Acoustic Twin Fan with Controller2 x UB47- Universal Insulated Terminal1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 7102 x Speed controller with Reverse - REB-1R4 x CBM 9-9 550w 4P VR (Open Motor)2 x MEV Spider Wireless boost Switch - MEV-SWH-W6 x Silent 100 Window Kit - windowS1 x Elta Louvre Shutter - 400mm2 x TG-K Duct temperature sensor4 x VTR 300 STD Filter Kit4 x CBM Low Pressure Centrifugal Fan - CBM 10/10 4 Pole 550watt CVR5 x Speed Controller - REB81 x Jet Cowl - 315mm6 x REU 7amp Speed control - Two Speed Five-Step Transformer - Trickle and Boost2 x ENV 100 12v transformer SELV1 x KKS 100 silencer-section - For use with the MUB 100 size Fans.2 x Vent Axia SC5001 - Speed controller1 x ELM 18 EX Flexible Cuff for ERM 183 x CMT-2 225/090 1.1KW - Single inlet centrifugal fan direct driven4 x DDMP 12-12 3F 1810W M6A4 DG01 x Egg Crate Grille with G2 Dust panel filter 1 inch- 300x3003 x Elta - Room Sensor - Temp/Humid/C025 x CBT-100N Centrifugal3 x Mini Diffuser - 100mm2 x Contactor Interface Station - CI93 x Compact SCD450/4-1AC4 x CBM Low Pressure Centrifugal Fan - CBM 10/10 4 Pole 550watt VR1 x GXC6EC - High Performance Extract Fan4 x SAVE VSR 300 heat recovery unit4 x CPTA-E Flush mounted PIR sensor with timer2 x MWS 5 – Transformer Controller With Motor Protection Unit6 x Transformer Speed Control - RTRE- 5.0Amp1 x EBM-Papst D4E225-BC01-17 Double inlet2 x TUNE-R-200-3-M4 - Control Damper1 x Egg Crate Grille with Dust panel filter 1 inch- 595x5954 x Silentub - STUB 1001 x Skyflow SSR Horizontal Roof Cowl SSR80B2 x Speed Controller - REB2.5-N1 x MWS-75 Transformer controller with TK -7.5A2 x Speed Controller - REB161 x Quietflow SQS100-1ECL - Centrifugal Box Fan5 x Silent 300 CZ Design PLUS Extractor Fan3 x Clearflow CF Roof Mounted Vertical Discharge Centrifugal Fan - CF400/4-1AC - Single Phase1 x Single Deflection Grille 400mm with OBD damper1 x DDMP 10-08 3F 2210W M6A4 DG02 x Electrostatic Precipitator - 1H x 3W5 x VEKA INT 2000/15.0-L1 EKO3 x Biflow SB400-CON2-3 - High Temperature Bifurcated Fan2 x KMBI 315 Connector rectangular/circular to install on the discharge of CMT1 x Speed Controller - REB64 x CMT/4-315/130-4KW - Single inlet centrifugal fan direct driven1 x TEM 035 - 5 Speed Transformer Speed Control2 x CBM Low Pressure Centrifugal Fan - CBM 12/12 6 Pole 736watt CVR2 x EBM-Papst D3G133-BF05-14 Double inlet4 x Duct Termination with Mesh - 355mm5 x Helios RR-250-C Centrifugal inline fan2 x KAD-355-F400 Rectangle Flexible Connector1 x Vertical Cowl and Fan (Single Phase) - RAV400-4-11 x KBA- Inlet Mounting 2802 x Capacitor 2uf for use with the EBM A4E range1 x TD EVO-100 PF ECOWATT - Environmentally Friendly Energy Efficient Inline Fan3 x KBA- Inlet Mounting 3552 x KBA- inlet mounting flange for CRMT 2253 x TUNE-R-200-3-M2 - Control Damper1 x CFI In-line 425 - Carbon Filter3 x TD160-NT Mixvent - 100mm - TD160 Timer1 x RSK355 - Back Draught Shutter1 x CMT/4-280-115 2.2KW - Single inlet centrifugal fan direct driven ( LG-90)2 x CSB-60 Centrifugal fan4 x CMT/4-250-100 1.1KW - Single inlet centrifugal fan direct driven ( LG-90)2 x CBM Low Pressure Centrifugal Fan - CBM 9/7 4 Pole 373watt CVR3 x Helios HQW-400/4 - IP552 x 204x60mm Insulated Rectangular Vertical 45° Bend1 x Non Vision 150mm x 150mm (Air Transfer) Grille - With Flange - MILL FINISH3 x HIMF - Mixed Flow Fan 100mm Inline Fan3 x CBA-100 Inlet Flange for CBT-1001 x CBP-18/18-RC Belt Driven Centrifugal Fans2 x DS-2 2-Speed Switch (3 Phase)1 x Singleflow SSDL315-1EC3 x SPI-100 C Iris damper1 x RD35S-4DW.6W.3L - 122297 (Three Phase)3 x Duct Termination with Mesh - 100mm1 x CBT-130N Centrifugal ATEX II 3D ExtD 125*C2 x CBM 12-12 1100w 6P Three Phase2 x TUNE-R-200-3-M0 - Control Damper (NO ACTUATOR)2 x IR24-P - Presence detector1 x CO2 Room Sensor - CO2-R3 x VTR 500 STD Filter Kit2 x CFI In-line 150 - Carbon Filter2 x Potentiometer EGH 01 - for DDMP Fans4 x AXC TP - 150mm Plastic Centrifugal Inline Fan4 x 100mm Round Connector with Damper2 x CMT-2 120/50 - 0,09Kw - LG270 Single inlet centrifugal fan direct driven3 x Flat Roof Terminal -OFT 5 - Asphalt4 x CBM Low Pressure Centrifugal Fan - CBM 9/9 4 Pole 550watt 3V (3-Speed)3 x KBA- Inlet Mounting 2251 x ACO3TO-ADS-VFC-7.1A2 x Elta SCP400/4-1AC - IP551 x Egg Crate Grille with Dust panel filter 1 inch- 300x3002 x Helios ESA-1 Surface mounted Speed Control 1amp1 x CK-60F Kit2 x DDMP 10-10 1F 1000W M6A2 DA52 x Flakt Woods ME 1.1 speed controller 1amp - EA9011571 x SD-MUB Vibration pad set1 x DDMP 12-12 3F 5700W M6M0 DG71 x CBT-80N Centrifugal2 x Duct Termination with Mesh - 150mm1 x Flakt Woods ME 1.6 speed controller 6.0amp - EA9011593 x CBM Low Pressure Centrifugal Fan - CBM 9/9 4 Pole 550watt C VR1 x Comefri - TLZ 450 R - High Performance Scroll Fan1 x Vent Axia Trickle & Boost Switch1 x Duct Termination with Mesh - 450mm1 x KAD-225-F400 Rectangle Flexible Connector1 x KBA- Inlet Mounting 1801 x CCpro 40 (1CC9402) Long Casing Extension1 x CBM 7/7 147w 4P RE-VR1 x HIMF - Mixed Flow Fan 125mm Inline Fan1 x CBB-60N Centrifugal1 x Helios HQW-355/4 - IP551 x RUCK MTP 20, 10K, Speed control1 x WSD 100 (1060x1060x70)1 x 220x90mm Insulated Rectangular Horizontal 45° Bend1 x 220x90mm Insulated Rectangular Vertical 45° Bend1 x TUNE-R-200-3-M3 - Control Damper1 x Comefri - TLZ 560 R - High Performance Scroll Fan1 x DPD 12PM Delivery Surcharge2 x Biflow SB315-CON4-3 - High Temperature Bifurcated Fan1 x Backdraught Shutters 039-SFSV-63/711 x DS-2/2 2-Speed Switch IP54 (Single Phase)2 x Biflow SB250-CON4-3 - High Temperature Bifurcated Fan1 x CBS-100 Outlet Flange for CBT-100
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