Company details for:
Engineered Air Treatment Ltd
11 Dukes Close,
Thurmaston,
Leicester,
LE4 8EY,
United Kingdom
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Products
Acoustic Weather Louvre C/w Trace Heating
Blades are to be lined with non-combustible rockwool and faced with fibreglass and perforated sheet. Trace Heating will be wired through each blade underneath the rockwool, and will come out of the back of the perforated sheet and through a rubber grommet in the casing.
Flanges standard unless stated otherwise. R.S angle flanges cleaned, primed or painted can also be fitted.
Finger guards- 1/2″ sq mesh or insect mesh used as standard.
Finish to be either self colour or powder coated depending on customers requirements.
Temperature: Standard range -20°C to 50°C.
Sizing to be kept between 1000 and 1200 FPM (or under 5m/s)
Acoustic Weather Louvre
Blades are to be lined with non-combustible rockwool and faced with fibreglass and perforated sheet.
Flanges standard unless stated otherwise. R.S angle flanges cleaned, primed or painted can also be fitted.
Finger guards- 1/2″ sq mesh or insect mesh used as standard.
Finish to be either self colour or powder coated depending on customers requirements.
Temperature: Standard range -20°C to 50°C.
Sizing to be kept between 1000 and 1200 FPM (or under 5m/s)
Atex Dampers
CE EX II2G c IIC T1..6X
Design
To Cover Zone 1 and Zone 2
ATEX Dampers are similar to Dampers but are manufactured mainly of Stainless Steel or Aluminium. Dampers can be upgraded to give the same characteristics of a Gas Retention.
Construction
Casing 304 and 316 Stainless steel and Aluminium >7.5% mass of Magnesium available.
Blades 0.7mm Double skin, ‘z’ Type blades
Bushes bronze Oilite Bushe or Nylon Bushes
Spindles Stainless Steel to maximise life expectancy
Shims Fitted with stainless steel spring loaded side shims to minimize the gap between the casing and blades
Sizes All items are custom made to size but we can achieve in 100mm to 2000mm wide and 100mm to 3000mm high
Barometric Damper
Casing Pre-Galvanised Mild Steel , Aluminium, 304 Stainless or 316L. Pre-Galvanised Mild Steel is used as Standard whilst thicker gauges can be used necessary to achieve the required specification. Fully welded casing with welds cleaned flush and dressed as necessary.
Flanges Self Flanged and un-drilled as standard. RS angle flanges cleaned and primed painted, can be fitted.
Finish Powder coating on blades and casing available.
Bushes Nylon, Bronze or Oilite Bronze (-60ºC to 220ºC)
Spindles Stainless steel 304 or 316, Aluminium
Blades Can be interlinked to rise and fall in unison in instances of turbulent Air and counter balanced (if required) to reduce pressure loss.
Also Known as, Pressure Relief Dampers, Backdraft Dampers, Gravity Dampers, Barometric Dampers, Gravity Shutters.
Blast Dampers
OPTION A BLADES ARE OPEN AND SHUT DOWN ON BLAST
OPTION B BLADES ARE CLOSED AND OPEN ON BLAST
Construction
Casing 2mm Pre-Galvanised Mild Steel, 304 Stainless or 316L
Flanges Self Flanged and un-drilled as standard
Finish Self colour all welds cleaned and dressed
Bushes Bronze or Oilite Bronze (-60ºC to 220ºC) or SFL Bearings
Spindles 16-20mm dia Solid Stainless steel 304 or 316
Blades 2mm Interlinked to rise and fall in unison these are held in default position by adjustable spring- this spring is adjusted by final installer not by E.A.T. Ltd
Calculations Structural Calculations available on request
This is based on 500mm sq. damper module, for example a 1000mm wide x 500mm
high would be manufacture from 2 modules.
Counter-Balance Dampers
To release the pressure build up in a container and building to close under gravity/weights or pressure spring when not in use.
Construction:
Casing:-Pre-Galvanised Mild Steel , Aluminium, 304 Stainless or 316L. Pre-Galvanised Mild Steel is used as Standard whilst thicker gauges can be used necessary to achieve the required specification. Fully welded casing with welds cleaned flush and dressed as necessary.
Flanges:-Self Flanged and un-drilled as standard. RS angle flanges cleaned and primed painted, can be fitted.
Finish:-Powder coating on blades and casing available.
Bushes:− Nylon, Bronze or Oilite Bronze (-60ºC to 220ºC)
Spindles:- Stainless steel 304 or 316, Aluminium
Blades:- Can be interlinked to rise and fall in unison in instances of turbulent Air and counter balanced (if required) to reduce pressure loss.
PRESSURE DROP: PD below is for steel blades. For Aly Blades please multiply PD x 0.65.
Keep below 5 m/s or 1000 fpm.
Filter Gates
Construction: DESIGNED IN FLAT FORMATION AND IN V FORMATION
Casing: Pre-Galvanised Mild Steel , Aluminium, 304 Stainless or 316L.
Flanges: Self Flanged and un-drilled as standard. RS angle flanges cleaned and primed painted, can be fitted.
Finish: SELF COLOUR
Size Restriction: If size restrictions are exceed louvres will be supplied in modules.
Max Height:-2500mm
Max Width:-2500mm
Efficiency: Dependent on Media
Pressure Drop: Dependent on Media
Fire Dampers
Tested and assessed installation methods to BS EN 1366-2 and BS EN 476 20/22−
Stainless Steel Springs.
Available with Microswitches for blade status.
Available with HEVAC/HVCA installation Frames.
Flanges available for fitting to ducts or wall apertures.
Available with circular spigots
Max size 1200mm wide x 1000mm.
163mm deep Standard.
E classified Fire Dampers complying with BS EN 13501-3
Tested installation methods in differing supporting constructions (BS EN 1366-2)
Fixed Blade Louvres
Casing re-Galvanised Mild Steel , Aluminium, 304 Stainless or 316L. Pre-Galvanised Mild Steel is used as Standard whilst thicker gauges can be used necessary to achieve the required specification. Fully welded casing with welds cleaned flush and dressed as necessary.
Flanges Self Flanged and un-drilled as standard. RS angle flanges cleaned and primed painted, can be fitted.
Finish Powder coating on blades and casing available.
BirdGuard ½” sq Mesh or insect mesh can be fitted if necessary.
Gas Retention Dampers
Tests They have been tested by BSRIA and have succeeded in being classed BSEN1751:1999 class 2.
Actuation Electrical, Pneumatic and Hydraulic all available.
Casing 2mm Galvanised mild Steel as standard. Stainless steel and Aluminium available.
Blades 0.7mm Double skin, ‘z’ type blades fitted with PVC coated Flame retardant polyether to maximise sealing.
Bushes Machined Bronze buses to ensure tightness of seal between casing and spindle.
Spindles S/S to maximise life expectancy.
Shims Fitted with St/St spring loaded side shims to minimise the gap between casing and blades.
Gas retention Dampers are designed to Failsafe close in case of fire.
Gravity Flap Dampers / Gravity Damper
Casing Pre-Galvanised Mild Steel , Aluminium, 304 Stainless or 316L. Pre-Galvanised Mild Steel is used as Standard whilst thicker gauges can be used necessary to achieve the required specification. Fully welded casing with welds cleaned flush and dressed as necessary.
Flanges Self Flanged and un-drilled as standard. RS angle flanges cleaned and primed painted, can be fitted.
Finish Powder coating on blades and casing available.
Bushes Nylon, Bronze or Oilite Bronze (-60ºC to 220ºC)
Spindles Stainless steel 304 or 316, Aluminium
Blades Can be interlinked to rise and fall in unison in instances of turbulent Air and counter balanced (if required) to reduce pressure loss.
Also Known as, Pressure Relief Dampers, Backdraft Dampers, Gravity Dampers, Barometric Dampers, Gravity Shutters.
High Temperature Flue Damper
Insulated Dampers
Casing 2mm Galvanised mild Steel as standard. Stainless steel and Aluminium available.
Blades 18g Double skin, ‘z’ type blades fitted with PVC coated Flame retardant polyether to maximise sealing and lined with 25mm thick Styrofoam (u. 1.08)
Bushes Nylon bushes
Spindles BZP
Shims Fitted with St/St spring loaded side shims to minimise the gap between casing and blades.
IP 65 LOUVRE
Protection against ingress of solid foreign objects:
IPnX: IP6X Category 2 Test Duration:8 Hours
Protection against ingress of water with harmful effects indicated:
IPXn:IPX5 Flow Rate:12.5 Litres/Minute Test Duration:3 Minutes
Results IP Value: IP65
Tested by Cambridge Refrigeration Technology To BS EN 60529:1992
Low Temperature Dampers
Actuation Electrical, Pneumatic and Hydraulic all available.
Casing 2mm Galvanised mild Steel as standard. Stainless steel and Aluminium available.
Blades 0.7mm Double skin, ‘z’ type blades fitted with PVC coated Flame retardant polyether to maximise sealing.
Bushes Machined Low Temperature Bronze buses to ensure tightness of seal between casing and spindle.
Spindles S/S to maximise life expectancy.
Shims Fitted with St/St spring loaded side shims to minimise the gap between casing and blades.
Actuators can be fitted with heater jackets to allow the motor, pneumatic or hydraulic to operate in such low temperatures.
Also the job can be lined with Styrofoam to keep all of the mechanism within a certain temperature to allow it to operate properly.
Manual Dampers
Fully welded casing with welds cleaned flush and dressed as necessary.
Blades Aerofoil and ‘z’ Section Blades are fabricated from 22g and 18g sheets and double skinned for strength.
Linkages A link bar allows the blades to open and close in a parallel plain.
Bearings low Maintenance bushes into which the spindles are placed. Available in Nylon, Bronze or Oilite Bronze(-80ºC to 220ºC). Bearings can be placed into housings for longer life and greater strength.
Spindles 1/2”Diameter zinc plated, Stainless Steel 304 or 316, Aluminium.
Flanges Self Flanged and undrilled as standard. RS angle flanges cleaned and primed painted, can be fitted.
Fingerguards 1/2”sq Mesh used as standard. Insect mesh is also Available.
Finish Self Colour, Powder coating on blades and casing available.
Metal Water & Dust Eliminator
IPnX: IP6X Category 2 Test Duration:8 Hours
Protection against ingress of water with harmful effects indicated.
IPXn:IPX4 Flow Rate:10 Litres/Minute Test Duration:5 Minutes
Results IP Value: IP64
Tested by Cambridge Refrigeration Technology To BS EN 60529:1992
Construction:-
Casing:-2mm Pre-Galvanised Mild Steel , Aluminium, 304 Stainless or 316L.
Pre-Galvanised Mild Steel is used as Standard whilst thicker gauges can be used necessary to achieve the required specification. Fully welded casing with welds cleaned flush and dressed as necessary.
Blades:- Specially designed ‘V’ Type arrangement
Flanges:- Self Flanged and undrilled as standard. RS angle flanges cleaned and primed painted, can be fitted.
Fingerguards:- 1/2”sq Mesh used as standard. Insect mesh is also Available.
Finish:-Powder coating on blades and casing available.
Temperature:- Standard RangeC (airflow based on clean filter media. See literaturefor filter media airflows)
Motorised Dampers
Casing 2mm-3mm Pre-Galvanised Mild Steel , Aluminium, 304 Stainless or 316L.
Fully welded casing with welds cleaned flush and dressed as necessary.
Blades Aerofoil and ‘z’ Section Blades are fabricated from 22g and 18g sheets and double skinned for strength.
Linkages A link bar allows the blades to open and close in a parallel plain.
Bearings low Maintenance bushes into which the spindles are placed. Available in Nylon, Bronze or Oilite Bronze(-80ºC to 220ºC). Bearings can be placed into housings for longer life and greater strength.
Spindles 1/2″Diameter zinc plated, Stainless Steel 304 or 316, Aluminium.
Flanges Self Flanged and undrilled as standard. RS angle flanges cleaned and primed painted, can be fitted.
Fingerguards 1/2″sq Mesh used as standard. Insect mesh is also Available.
Finish:-Self Colour, Powder coating on blades and casing available.
Motorised Smoke/Fire Dampers
Smoke, like air will pass through a ventilation system. The purpose of a smoke damper, is to prevent the progression of smoke through the system. To be truly effective therefore, a smoke damper must have low leakage factor. A combination fire/smoke damper has more demanding criteria, it must maintain its physical integrity in the most demanding conditions of temperature, and throughout this period it must maintain a low leakage rate, if it is not capable of doing this, then is cannot be an effective fire/smoke damper. Quite definitely, simple adding a device to a fire damper, which will initiate operation following a signal from a smoke sensor does not make a fire damper a smoke damper. The absence in the U.K. of specific smoke leakage standards and criteria has permitted manufacturers to self define what a smoke damper is. Careful consideration and evaluation should therefore be made when choosing your fire/smoke damper.
Fire/smoke dampers specifically address leakage rates at ambient and elevated temperatures. The blades are roll-formed from 16 msg steel and casings are 18 msg steel, complete with welded corners. The linkage is concealed out of the airstream completely, within the double skin casing.
PVC Water & Dust Eliminator
Design: By definition the Eliminator should protect against water and dust which is achieved by the R17 filter pads and offer protection against low pressure jets of water from all directions. Limited ingress is permitted.
Protection against ingress of solid foreign objects:
IPnX: IP6X Category 2 Test Duration:8 Hours
Protection against ingress of water with harmful effects indicated:
IPXn:IPX5 Flow Rate:12.5 Litres/Minute Test Duration:3 Minutes
Results IP Value: IP65
Tested by Cambridge Refrigeration Technology To BS EN 60529:1992
Sandtrap Louvres
Pre-Galvanised Mild Steel is used as Standard whilst thicker gauges can be used necessary to achieve the required specification. Fully welded casing with welds cleaned flush and dressed as necessary.
Flanges Self Flanged and un-drilled as standard. RS angle flanges cleaned and primed painted, can be fitted.
Finish Powder coating on blades and casing available.
Size Restriction
If size restrictions are exceed louvres will be supplied in modules.
Max Height:- 2350mm
Max Width:- 2400mm
Efficiency
Tests on similar equipment indicate an efficiency of 80% on AC. Coarse (20-200 microns) and 50% efficiency on AC. Fine (1-20 microns) test dust.
About us
With world wide installations of motorised dampers and louvres within the power generation industry and noise control environments as well as hazardous area and marine environments, Engineered Air Treatment (EAT), based in Leicester, is your specialist manufacturer and supplier of manual louvres, motorised louvres, gas operated or electrically operated gas retention dampers, motorised dampers, gravity and non-return flaps, fixed blade louvres, sand trap louvres, penthouse louvres, gas retention dampers for turbine enclosures and recirculation dampers for turbine enclosures.
Engineered Air Treatment products are installed world wide in a variety of industries, both on shore and off shore, for applications such as aero engine test cells, F1 racing, generator enclosures, internet, engineerign & manufacturing, oil rigs & turbines, retail outlets, shipping, sugar refineries and telecommunications.
Our products and services include;
- Manual louvres
- Motorised louvres
- Gas operated retention dampers
- Electrically operated gas retention dampers
- Gravity and non-return flaps
- Fixed blade louvres
- Sand trap louvres
- Penthouse louvres
- Gas retention dampers for turbine enclosures
- Gas recirculation dampers for turbine enclosures
Visit the Engineered Air Treatment website for more details on our range of louvres and dampers.
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