Fume Hood Ventilation

SE UL Hoods

Fume Hood Ventilation Solutions


*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 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*

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

STD

EXP

STD

EXP

STD

EXP

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”

51734

51834

51735

51835

51736

51836

1 1/2

51737

51837

*Epoxy Coated Steel Blower Direct Drive*

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
A Inlet Diameter	B Outlet Size	HP	STD	EXP	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

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 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	A Inlet Diameter	B Outlet Diameter	HP	STD	EXP	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*

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

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
cfm	A Inlet Diameter	B Outlet Diameter	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”
	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
	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
	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
	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
	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
	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
	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
	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
	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
	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
	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
	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”
	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.

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.

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 is 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.

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.

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

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

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

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

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					Blower
Size	Dimensions			Cat.No.	Size	Cat.No.
Size	A	B	C	Cat.No.	Size	Cat.No.
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.

• 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.

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.

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

Centrifugal Fans

• 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

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
Unit Size	Cat. No.	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.

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

HEMCO Corporation	711 S. Powell Road Independence, MO 64056	816-796-2900
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