HEMCO Corporation

  ISO 9001:2015 UL 1805  
Fume Hood Ventilation Solutions
Direct Drive Blowers Belt Drive Blowers Ductwork Centrifugal Fans
Direct Drive Blowers Belt Drive Blowers Ductwork Centrifugal Fans
Direct drive steel blower and impeller wheel are epoxy coated for chemical resistance. Belt Drive steel blower and impeller wheel are epoxy coated for chemical resistance. Each Fume hood should have its own ducting and blower to maximize hood flexibility Self contained high plume exhaust system designed to remove hazardous fumes
Inline HEPA/Carbon Filters Manifold Fume Scrubbers In-Line Fume Hood Scrubbers Ventilation Systems
Inline HEPA/Carbon Filters Manifold Fume Scrubbers In-Line Fume Scrubbers Ventilation Systems
Filter packs used to remove chemical odors and vapors from the air stream Manifold Fume scrubbers provide air pollution control for water soluble fumes and odor For Laboratories requiring removal of acid vapors from exhaust, under corrosive conditions Integrated components, blowers, fume scrubbers, and ducting
Blower Selection and Installation
Blower systems must be installed and maintained in order to control the amount of air movement through the hood. Select a blower with a large enough capacity for your application and set-up. Allow for some drop in capacity from fouling by dust and other contaminants.Blowers and ductwork should be arranged so that pressure loss in the system is minimal. Minimize the quantity of elbows and other restrictions. The shortest and straightest arrangements are the most effective and efficient.
It is suggested that each hood have its own blower and ducts for maximum flexibility and to avoid back flow from other hoods. Ductwork systems will also perform efficiently, provided ducts & blowers have been properly sized for the number of hood units in the system. It is recommended that the blowers be located as close as possible to the exhaust end of the duct system. By keeping the number of elbows to a minimum, the air will be under negative pressure; thereby, should a leak occur, clean air would be pulled into the duct rather that contaminated air being pushed out. Where fume hoods are used as part of the laboratory ventilation system, blowers should be in operation at all times.
Blower Maintenance
Regular maintenance of blower and ducting will increase the efficiency of your fume removal system. Blower and ductwork systems should be part of your regular maintenance schedule. Contaminant build-up collected on impeller blades of a centrifugal blower can greatly reduce its capacity. Blowers should be checked to make certain the direction of rotation is correct. Centrifugal blowers will function while rotating in wrong direction but output will be greatly reduced. The above figures show various suggested arrangements of ducts and blowers. Blowers may be installed within the lab, on the roof, on an external wall, or in the fume hood itself. Your choice of arrangements will depend on your particular laboratory location and set-up, facility policies, and building codes.
Epoxy Coated Steel Blower Belt Drive
Belt Drive Blower Standard (STD) belt drive steel blower and impeller wheel are epoxy coated for superior chemical resistance. Explosion-proof blowers (EXP) have epoxy coated, non-sparking aluminum impeller wheel. V-belt drive and adjustable pulleys permit field balancing. Seven discharge positions to suit installation. Weather housing is furnished. Motor has thermal overload protection. Specify: 115 V single phase, 230 V single phase, 230/460 V three phase or 208 V (consult factory). 1 year manufacturer’s warranty
Catalog Number and Static Pressure
cfm A
Inlet
Diameter
B
Outlet
Size
1/2” Static Pressure 3/4” Static Pressure 1” Static Pressure 1 1/2” Static
Pressure
HP STD EXP HP STD EXP HP STD EXP HP STD EXP
296 8 7/8” 10 1/8” x 4 1/8” 1/4 51701 51801 1/4 51702 51802 1/4 51703 51803 1/4 51704 51804
474 8 7/8” 10 1/8” x 4 1/8” 1/4 51705 51805 1/4 51706 51806 1/4 51707 51807 1/2 51708 51808
652 8 7/8” 10 1/8” x 6 3/8” 1/2 51709 51809 1/2 51710 51810 1/2 51711 51811 1/2 51712 51812
800 8 7/8” 10 1/8” x 6 3/8” 1/2 51713 51813 1/2 51714 51814 1/2 51715 51815 3/4 51716 51816
914 9 7/8” 11 1/2” x 8 1/4” 1/2 51717 51817 3/4 51718 51818 -- -- -- -- -- --
1044 9 7/8” 11 1/2” x 8 1/4” 1/2 51719 51819 1/2 51720 51820 1/2 51721 51821 -- -- --
1175 9 7/8” 11 1/2” x 8 1/4” 1/2 51722 51822 1/2 51723 51823 3/4 51724 51824 -- -- --
1240 9 7/8” 11 1/2” x 8 1/4” 1/2 51725 51825 1/2 51726 51826 3/4 51727 51827 3/4 51728 51828
1240 11 7/8” 13 3/8” x 8 1/4” 1/3 51729 51829 1/2 51730 51830 -- -- -- -- -- --
1506 11 7/8” 13 3/8” x 8 1/4” 3/4 51731 51831 3/4 51732 51832 3/4 51733 51833 -- --  
1771 11 7/8” 13 3/8” x 8 1/4” 1 51734 51834 1 51735 51835 1 51736 51836 1 1/2 51737 51837
Belt Drive Blower
Epoxy Coated Steel Blower Direct Drive
Direct Drive Blower Direct drive steel blower and impeller wheel are epoxy coated for superior chemical resistance. Explosion proof blowers have epoxy coated non-sparking aluminum impeller wheels. Motor is 115V, 1 phase and has thermal overload protection. 1 year manufacturer’s warranty
Catalog Number and Static Pressure
A
Inlet
Diameter
B
Outlet
Size
HP STD EXP 1/4” SP 1/2” SP 3/4” SP 1” SP
cfm cfm cfm cfm
6” 7” X 4-3/8” 1/6 51177 51178 565 515 440 300
8” 8-3/4” X 5-7/16” 1/3 51179 51180 935 875 800 712
9” 10-1/8” X 4-1/8” 1/2 51181 51182 1050 980 920 850
9” 10-1/8” X 5-1/8” 3/4 51183 51184 1260 1220 1180 1100
Direct Drive Blower
Standard motors are 115V, 60Hz / 1 phase. Explosion proof motors are 115/230V, 60Hz, 1 phase. Other voltage, hertz, and phase motors are available.
Fume Hood Exhaust Blowers Ordering Info
HEMCO offers a complete line of chemical resistant non-metallic exhaust blowers in belt drive or direct drive options in standard or explosion proof models. Ideal for applications where corrosion resistance is critical. These blowers are available in polypropylene or fiberglass construction.
Blower Recommendations

1. It is recommended that exhaust blowers be located at the
 end of the ducting which is typically roof mounted. This
 ensures a negative pressure through out the ventilation    system. However for applications where the duct is going  directly out through a wall above a fume hood, one option is  to have a fiberglass direct drive blower installed in the top of  the fume hood. By having the blower internally mounted, the  installation is simplified and convenient for duct connection  and servicing. However there would be an airflow sound  element associated to having the blower hood mounted.


2. By keeping the exhaust duct as short and as straight as  possible, the total resistance will be reduced and by keeping  the diameter of the duct correctly sized to the flow volume,  noise and static pressure can be reduced.

 

3. Blower wheels for polypropylene and fiberglass blowers
 are polypropylene.

4. Vibration isolators are recommended when mounting the
  blower assemblies

5. HEMCO recommends that a sash stop be installed on the
 fume hood to limit the sash height for operation. By having
  stop at a half open position, the total CFM can be reduced by  50%; thus by reducing the volume, energy loss, duct
 diameter, motor and blower size, and sound is reduced.

Blower Description
UniFlow SE & LE Fume Hoods
Hood
Width
Hood
Depth
Full
Open cfm
1/2
Open cfm
36” 30” 438 241
48” 30” 772 385
60” 30” 938 474
72” 30” 1162 592
96” 30” 1613 800
UniFlow CE Fume Hoods
Hood
Width
Hood
Depth
Full
Open cfm
1/2
Open cfm
30” 24” 378 189
36” 24” 460 230
48” 24” 654 327
72” 24” 960 480

• CFM at 100 fpm face velocity

• Housing is constructed of heavy gauged galvanized steel, with a
  baked enamel finish, to resist weather & chemical exposures.

• Flange inlet collars enable easy connection to ductwork.

• Wheel is dynamically balanced to minimize noise and increase
   efficiency.

• Ball bearing pillow blocks are per-lubricated and resistant to both
   moisture and dirt.

• Shaft is constructed of polished steel with a coating to prevent rust
  and corrosion.

• Motors meet NEMA standards for single speed motors.

• These blowers are ideally suited for both supply and exhaust
   applications in  laboratories, educational, pharmaceutical,
   industrial, and other applications.

Vertical Intake Vertical Discharge Blowers
Vertical Discharge BlowersVertical Discharge Blowers Vertical Intake Vertical Discharge Blowers, mounted in the interstitial ceiling space of the fume hood. Blower housing is constructed of FRP for chemical resistance Direct drive blower and impeller wheel are epoxy coated for superior chemical resistance. Explosion proof blowers have epoxy coated non-sparking aluminum impeller wheels. Motor is 115V, single phase and has thermal overload protection. Available on UniFlow SE, and CE fume hoods. 1 year manufacturer’s warranty
Catalog Number and Static Pressure
cfm A
Inlet
Diameter
B
Outlet
Diameter
HP STD EXP 1/4” SP 1/2” SP 3/4” SP
CFM CFM CFM
160 6” 4” 1/6 51060 51061 115 -- --
280 8” 6” 1/4 51062 51063 200 125 --
590 8” 8” 1/2 51064 51065 500 450 350
685 10” 10” 1/2 51068 51069 550 425 300
Polypropylene Belt Drive Blowers
Polypropylene Belt Drive Blowers High efficiency impellers produce low power consumption, reduced operating costs and quiet operation. 20 forward curved blades, in fire retardant polypropylene. Non-static and oil resistant v-Belt, cast iron pulleys, adjustable pulleys available, adjustment for tensioning and belt replacement. 230V explosion proof, non sparking, chemical resistant for hostile or hazardous environments. 115V single phase or three phase. Non-static and oil resistant V-belt, cast iron pulleys, adjustable pulleys available, adjustment for tensioning and belt replacement.
1 year manufacturer’s warranty
Polypropylene Belt Drive Blowers
Catalog Number and Static Pressure
cfm A
Inlet
Diameter
B
Outlet
Diameter
0.5” Static Pressure HP 0.75” Static Pressure HP 1.0” Static Pressure HP
HP STD EXP HP STD EXP HP STD EXP
400 6” 6” 1/4 51450 51850 1/4 51460 51860 1/4 51470 51870
800 8” 8” 1/4 51451 51851 1/3 51461 51861 1/3 51471 51871
1000 8” 8” 1/2 51452 51852 1/2 51462 51862 1/2 51472 51872
1200 10” 10” 1/2 51453 51853 1/2 51463 51863 1/2 51473 51873
1600 10” 10” 1 51754 51854 1 51464 51864 1 51474 51874
Fume Hood Ductwork and Venting Accessories
Ducting and accessories are chemical resistant and easy to install
Flexible and Rigid PVC Ducting 4” 6” 8” 10” 12” 14”
Flexable Ducting

1. Flexible Ducting neoprene impregnated fiberglass reinforced with steel helix wire. Standard 12’ lengths. Each piece includes two strap clamps.

Cat. No.
80051

Cat. No.
80052

Cat. No.
80053

Cat. No.
80054

Cat. No.
80055

Cat. No.
80056

PVC Rigid Ducting

2. PVC Rigid Ducting chemical resistant for permanent installations. Standard 10’ lengths with straight ends.

Cat. No.
82004

Cat. No.
82006

Cat. No.
82009

Cat. No.
82011

Cat. No.
82013

Cat. No.
82015

PVC Coupling

3. PVC Coupling required to connect straight sections.

Cat. No.
82147

Cat. No.
82149

Cat. No.
82153

Cat. No.
82157

Cat. No.
82159

Cat. No.
82160

PVC 90 degree Elbow

4. PVC 90 degree Elbow used in order to offset obstacles. Has belled ends for duct connections.

Cat. No.
82060

Cat. No.
82061

Cat. No.
82063

Cat. No.
82066

Cat. No.
82068

Cat. No.
82069

PVC 45 degree Elbow

5. PVC 45 degree Elbow used in order to offset obstacles. Less static pressure loss than a 90 degree elbow. Has belled ends for duct connections.

Cat. No.
82082

Cat. No.
82083

Cat. No.
82085

Cat. No.
82087

Cat. No.
82089

Cat. No.
82090

PVC 45 degree WYE

6. PVC 45 degree WYE lateral for joining common ductwork in multiple hood designs. Branch diameter may be sized to 2” to 4” smaller than main diameter. Has belled ends for duct connections.

Cat. No.
82216

Cat. No.
82218

Cat. No.
82226

Cat. No.
82229

Cat. No.
82233

Cat. No.
82234

PVC Tee

7. PVC Tee used in manifold exhaust
systems. Has belled ends for duct
connection.

Cat. No.
82034

Cat. No.
82036

Cat. No.
82038

Cat. No.
82040

Cat. No.
82044

Cat. No.
82046

PVC Butterfly Damper

8. PVC Butterfly Damper modifies cfm
for single or multiple hood arrangement.
Has belled ends for duct connection.

Cat. No.
82450

Cat. No.
82452

Cat. No.
82454

Cat. No.
82456

Cat. No.
82458

Cat. No.
82460

PVC Blast Gate Damper

9. PVC Blast Gate Damper a gate that
slides in and out to control cfm. Has
belled ends for duct connection.

Cat. No.
82369

Cat. No.
82371

Cat. No.
82373

Cat. No.
82375

Cat. No.
82377

Cat. No.
82379

PVC Rain Skirt

10. PVC Rain Skirt slips over straight pipe
on roof to slope water away from cutout.

Cat. No.
82328

Cat. No.
82330

Cat. No.
82332

Cat. No.
82334

Cat. No.
82336

Cat. No.
82337

PVC Vent

11. PVC Vent outlet for horizontal
venting through wall or window. Angled
end prevents rain from entering. Male connector included.

Cat. No.
80074

Cat. No.
80076

Cat. No.
80077

Cat. No.
80078

Cat. No.
80079

Cat. No.
80080

Zero Pressure Weather Cap

12. Zero Pressure Weather Cap
discharges fumes vertically away from roof. Self-draining. Minimal static pressure loss. This is the recommended weather cap.

Cat. No.
82350

“A”=16”

Cat. No.
82352

“A”=24”

Cat. No.
82354

“A”=32”

Cat. No.
82356

“A”=40

Cat. No.
82358

“A”=48”

Cat. No.
82359

“A”=56”

Round to Round Transition

13. Round to Round Transition to smaller
duct diameter.

Cat. No.
82613

4"-6"

Cat. No.
82615

6"-8"

Cat. No.
82617

8"-10"

Cat. No.
82619

10"-12"

Cat. No.
82620

12"-14"

Cat. No.
82621

14"-16"

Clean Aire HEPA/Carbon In-Line Filtration Systems
Clean-Aire HEPA and Carbon Filter Paks are designed to be mounted incline in the exhaust ducting from a fume hood or contaminant source up to 1500 cfm.

The filter pak includes a galvanized steel housing with hinged and gasketed access door for filter change-out and molded composite resin inlet and outlet plenum with duct connection collars sized to meet specification.

Both filters include a 30% pleated prefilter and can be paired together for applications that require particulate and fume removal.
  HEPA/Carbon In-Line Filtration Systems
Clean Aire In-Line HEPA Filtration Systems
HEMCO HEPA filter paks effectively collect particulate contaminants from the exhaust air stream. HEPA filters are 99.999% effective
at removing particulate .3 micron and larger. The filter pak housing features a hinged access door with gaskets and spring latches
for convenient filter change. Inlet and outlet plenum's with duct connection collars are installed. The HEPA filter pak can also be paired with a carbon filter pak to remove chemical fumes and odors.
Note: HEMCO recommends a minihelic or magnehelic gauge to monitor the airflow differential across the filter. The static pressure indicated would alert when to change filter. The gages can be hood or filter mounted. We recommend ordering a back-up replacement filter.
Clean Aire In-Line HEPA Filtration Systems
Clean Aire HEPA Filter Pak
CFM Size Duct Size Cat. No.
250-650 26” x 15” x 35 1/2” 4”, 6”,8” diameter 50188
650-1200 26” x 26” x 35 1/2” 8”, 10”, 12” diameter 50189
HEPA Filters Prefilter (6 per carton)
CFM Size Cat. No CFM Size Cat. No.
500 24” x 12” x 12” 50094 500 24” x 12” x 2” 52000
1000 24” x 24” x 12” 50095 1000 24” x 24” x 2” 52001
Shown with optional photohelic gauge Cat. No. 51302
Filter Housing is fabricated of type-304 stainless steel & requires (1) carbon filter absorber, (1) 24” X 24” X 2” 30% pleated prefilter & (1) bag.
Bag-In bag-out filters are designed to meet air filtration requirements to handle hazardous fumes and vapors. The housing incorporates a ribbed bagging ring around the side access door over which a specially designed plastic bag is attached. Filters are then installed and changed through the bag to reduce the risk of exposure to personnel. Note: The carbon filter is not included with the housing. We also, recommend the sampling kit below to check if there has been a break through in the carbon filter, and ordering a back-up replacement filter.
HEPA Filter Bag In Bag Out System
Clean Aire HEPA Filter Bag-In Bag-Out System
Description CFM Size Cat. No.
Clean-Aire HEPA Filter Bag-In Bag-out System 1000 26” X 26” X 35-1/2” 51189
HEPA Filters 1000 24” X 24” X 12” 50195
HEPA Prefilter (6 per carton) 1000 24” X 24” X 2” 52001
Replacement Bags (2 per carton) 51989
Minihelic Gauge
Gauge monitors the pressure differential across the HEPA filter, Gauge conveniently mounts on the fume hood or on the filter
housing. Measure range is from 0 to 2.0” wg Gauge i
s 3” dia. with 5% accuracy 
                                                                       Cat. No. 51300
Magnehelic Gauge
Gauge measures static pressure across the HEPA filter. Mounts on the fume hood or the filter housing. Range of measurement is
from 0 to 2” wg. Gauge is 5” dia with 2% accuracy. 
    
                                                                                                         Cat. No. 51301
Clean Aire In-Line Carbon Filtration Systems
HEMCO carbon filter paks are used in laboratory exhaust and supply systems to remove chemical odors and vapors from the airstream. Filters are loaded with virgin coconut activated carbon to efficiently absorb organic solvents and acid fumes. The
filter pak housing features a hinged access door with gaskets and spring latches for convenient filter changes. Inlet and outlet plenum's with duct connection collars are installed. The carbon filter pak can also be paired with a HEPA filter pak to collect particulate contaminants.
A standard “01” activated carbon filter for organics is included. HEMCO recommends the sampling kit to check if there has been a breakthrough in the carbon filter, and ordering a back-up replacement filter.
In-Line Carbon Filtration Systems
Clean Aire Carbon Filter Pak
CFM Size Duct Size Cat. No.
250-650 26” x 15” x 35 1/2” 4”,8” diameter 50297
650-1200 26” x 26” x 35 1/2” 8”, 10”, 12” diameter 50298
Carbon Filters Prefilter (6 per carton)
CFM Size Cat. No CFM Size Cat. No.
500 24” x 12” x 12” 52100 500 24” x 12” x 2” 52000
1000 24” x 24” x 12” 52101 1000 24” x 24” x 2” 52001
Carbon Filter Bag In Bag Out System
Filter housing is fabricated of type-304 stainless steel & requires (1) carbon filter absorber, (1) 24” X 24” X 2” 30% pleated prefilter & (1) bag.
Bag-In bag-out filters are designed to meet air filtration requirements to handle hazardous fumes and vapors. The housing incorporates a ribbed bagging ring around the side access door over which a specially designed plastic bag is attached. Old filter is removed then new filters are then installed and changed through the bag to reduce the risk of exposure to personnel. Note: The carbon filter is not included with the housing. We also, recommend the sampling kit below to check if there has been a break through in the carbon filter, and ordering a back-up replacement filter.
Bag In Bag Out System
Clean Aire Carbon Filter Bag-In Bag-Out System
Description CFM Size Cat. No.
Clean-Aire Carbon Filter Bag-In Bag-out System 1000 26” X 26” X 35-1/2” 51198
Carbon Filters 1000 24” X 24” X 12” 52111
Carbon Prefilter (6 per carton) 1000 24” X 24” X 2” 50001
Replacement Bags (2 per carton) 51999
Clean Aire In-Line Filtration Systems
The filtration system is rated at 1800 cfm & includes a stainless steel housing with lift off and gasketed access doors for filter change-out and inlet & outlet plenum with duct connection collars sized to meet specification. Bubble tight dampers allow system to close off for filter change.

• Initial filters supplied (excludes prefilters)

• Initial change out bags supplied.

• Inlet/outlet duct connection flanges shall be
  a minimum of 1-1/2” wide.

• Approx. shipping weight: 1100 LBS.(without filters)

• Approx. operating weight: 1350 LBS.

• A minimum of four (4) feet of clearance in front
  of access door is recommended for filter
  change-out.

  Cat. No. 58998-1 (1) HEPA and Carbon Incline

  Cat. No. 58998-2 (2) HEPA and Carbon Online

In-Line Filtration Systems
Carbon Efficiency Chart
The following chart is a partial list of contaminants and the proper type of carbon for maximum efficiency. For additional contaminants,
please consult factory. *Filter Check Available
Contaminant
Type
Contaminant
Type
Contaminant
Type
Contaminant
Type
Contaminant
Type
Acetic Acid
01
Chlorophicbin
01
Ethylene Dichloride
01
Iodine
01
Propyl Mercaptan
01
Acetone
01
Formaldehyde
01
Ethylene Oxide
06
Isopropyl Alcohol
01
Pyridne
01
Ammonia*
05
Cyclohexanone
01
Formaldehyde
03
Isopropyl Ether
01
Styrene Monomer
01
Benzene
01
Dibromoethane
01
Formic Acid*
02
Methyl Butyl Keytone
01
Sulfur Dioxide*
02
Butyl Acetate
01
Dichloronitroethane
01
Formaldehyde
04
Methyl Ethyl Keytone
01
Sulfuric Acid*
02
Caprylic Acid
01
Dichloropropane
01
Heptane
01
Methylene Chloride
01
Toluene
01
Carbolic Acid
01
Dimethyl Sulfate
01
Heptylene
01
Nitric Acid*
02
Trichloroethalene
01
Carbon Tetrachloride
01
Dipropyl Keyton
01
Hexane
01
Nitrobenzene
01
Trichloroethane
01
Chlorine*
02
Ethyl Alcohol
01
Hydrogen Bromide*
02
Nitropropane
01
Xylene
01
Chloroform
01
Ethyl Benzene
01
Hydrogen Chloride*
02
Octalene
01

Scrubber systems offer high efficiency and minimal maintenance on meeting pollution control requirements.

Manifold Fume Hood Scrubber
Remote Recirculation Pump  

Remote Recirculation Pump

Can be supplied for installations where the scrubber is located outdoors and the possibility of freezing is present.

 
CFM Cat. No
500 80210
1000 80211
2000 80212
4000 80213
6000 80214
8000 80215
  Scrubber

PH Control Package

Allows precise control over effluent quality and provides neutralization of contaminants. The PH control system consists of a weather tight, corrosion-proof enclosure containing an analyzer, pre-wired chemical feed pump, weather- protected terminal block, clear PVC face plate and external chemical -feed connection. Enclosure can be mounted on any vertical surface. A heavy-duty industrial probe with a 10” lead wire is supplied, along with (2) 10” lengths of vinyl tubing to connect the feed pump

Cat. No. 80112

PH Control Package
 

Fume Scrubbers provide excellent air pollution control for water soluble fumes and odors by moving contaminated air through a filter pack media exposing over forty square feet of surface per cubic foot. Containment is collected on filter media surface and rinsed off with water, excess water is then mechanically removed and cleaned air is released. When conditions require, chemical additives can increase absorptive capacity of the scrubber. Unit includes integral recirculation tank and pump which significantly reduces water consumption and related waste disposal costs. Fan is not included, must be sized to meet exhaust requirements. Request a Plan-A Scrubber specification sheet for planning your scrubber.

  Catalog Number and Fume Removal Efficiencies
(based on a 3 foot bed)
Atmospheric Contaminant
5 Foot Bed Series With pH Control Package
Acetic Acid Mist NR 90-95%
Alcohols * *
Alkaline Mists, General 99.9% 99.9%
Aqua Regina Gas 95-98% 96-98%
Ammonia Gas NR 98-99%
Chlorine NR 95-98%
Chromic Acid 99% 99%
Cyanide Solutions 99.9% 99.9%
Fluoborate Mist 99% 99%
Formaldehyde NR 98-99%
Haldid Mist 98% 98%
Hydrofloric Acid 96-99% 98-99%
Hydrogen Cyonide NR 95-98%
Nickel Sulfate 99% 99%
Nitrogen Dioxide * *
Perchloric Acid 85-90% 95-98%
Phosphoric Acid 85-90% 95-98%
Sodium Sulfide 99% 99%
Sulfamate Mist 99% 99%
Sulfuric Acid 99.9% 99.9%
Zinc Chloride 95% 95%
Scrubber
Scrubber Blower
Size Dimensions Cat.No. Size Cat.No.
A B C
500 CFM 49” 30” 18” 80000 500 CFM 80010
1000 CFM 50” 34” 22” 80001 1000 CFM 80011
2000 CFM 50” 40” 28” 80002 2000 CFM 80012
3700 CFM 52” 49” 37” 80003 3700 CFM 80013
6000 CFM 53” 58” 45” 80004 6000 CFM 80014
8000 CFM 54” 65” 52” 80005 8000 CFM 80015
The above efficiencies are intended as a guide representing average values. Specific combinations and concentrations of fumes may result in a significant variation from the above. * Requires extended packing depth and chemical addition to scrubber solution.  
In-Line Fume Hood Scrubber

The Fume Hood Scrubber is designed for laboratories that require removal of acid vapors from exhausted air, under the most demanding corrosive environmental conditions. VS Scrubbers are compact vertical venturi units for indoor installations.

Vapor Scrubber • Low operating cost

• Sizes from 8” to 20”, larger sizes available

• Highly effective for water soluble acids

• No moving parts to wear out or replace

• Installs directly into exiting duct systems

• Average installation time 2 hours with minimal tools

• Uses no packing material to clog or replace

• Allows the isolation of individual hoods or
..tanks that require pollution reduction

• Low water consumption at a minimum 8 gallons
  per hour

• Can be ducted if necessary to meet venting   requirements.
Scrubber

The design of the

In-line
fume scrubber

is based on the need

for a simple, compact,

efficient, and water

conservative

apparatus for the

removal of particulates

and water soluble

vapors from individual

laboratory fume hoods.

Scrubber
Optimal Air Volume 240-250 CFM 580-720 CFM 890-1000 CFM 1590-1735 CFM 1950-2400 CFM 2400-3052 CFM
Overall Height “A” 38.75” 44.77” 50.75” 61.75” 73.537” 78.5”
Inlet Diameter “D” 8” 10” 12” 15” 18” 20”
  Cat. No. Cat. No. Cat. No. Cat. No. Cat. No. Cat. No.
PolyPro Construction 85008 85010 85012 85015 85016 85018
Recirculation System: includes recirculation tank, ph meters, recirculation pump, chemical feed tank and pump.
Cat .No. 85000
Centrifugal Fans
Manifold

• Installed quickly and easily on reinforced roof curb

• Designed to withstand up to 125 mph wind loads with
  out guy wires

• Performance capacities range from 270 - 2400 cfm
  and up to 3.5 in. wg per fan

• Meets ANSI Z9.5 , NFPA 45 and ASHRAE guidelines

• U.L. listed for electrical 705 power ventilators

• AMCA Certified for Sound and Air performance
  AMCA 210 & 300

• Components are electrostaticaly powder coated with
   a 2 part corrosion
resistant coating, standard color:
   Gray

• Housing Style is an In-Line Configuration

• 1 Year Warranty

Centrfugal Fan'
Centrifugal Fan Centrifugal Fan
Housing Style in-line Configuration
Stack Style High Plume Nozzle
Minimum Flow 270 cfm
Maximum Flow 24,000 cfm
Maximum ESP Up to 3.5 in wg (875 Pa)
UL Listed U.L. for electrical 705 power
ventilators
AMCA
Certified
Sound and Air performance AMCA210 & 300
Warranty 1 year
Unit Size Cat. No. Dimensions
In Inches
Performance Range (cfm) Nozzle Size Range
A B Min Max Min Max
9 85009 21 5/8 21 5/8 270 1750 4 9
10 85010 21 5/8 21 5/8 450 1800 5 10
12 85012 21 5/8 21 5/8 600 2640 6 13
13 85013 23 5/8 23 5/8 810 3160 7 14
16 85016 27 5/8 27 5/8 -- 7080 8 18
Ventilation Systems
Proper placement and use of fume hoods and blowers are important laboratory ventilation requirements. HEMCO offers the following suggestions to help in your laboratory layout.
Ventilation
Supplemental Room Air Supply
Laboratory supplemental air supply package is designed for situations where there is a shortage in availability of proper air supply to fume hoods. Supplemental air supply package serves as a alternative to auxiliary air hoods by diffusing make-up air to the laboratory rather than creating turbulence at the face of the hood. includes: 2’ x 2’ ceiling diffuser, prefilter, flexible ducting, and fan.
500 CFM Package 1 Diffuser Included Cat. No. 90001
1000 CFM Package 2 Diffusers Included Cat. No. 90002
1500 CFM Package 3 Diffusers Included Cat. No. 90003
Laboratory Ventilation Recommendations
Proper placement and use of fume hoods and blowers are important laboratory ventilation requirements. HEMCO offers the following suggestions to help in your laboratory layout. Please feel free to contact HEMCO’s technical support team in order help with your laboratory needs.
Typical Ventilation Installations
Ventilation
HEMCO Corporation 711 S. Powell Road Independence, MO 64056 816-796-2900 800-779-4362
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