HOUSTON SERVICE INDUSTRIES

MULTISTAGE CENTRIFUGAL BLOWERS

HSI provides a full line of cast iron multi-

stage centrifugal blowers with controls,

motors and accessories to meet a broad

range of municipal and industrial applica-

tions. From 2 to20 PSI, 1to17 inches

HG,100 to 30,000 CFM, we have the

blower to meet your needs.

Manufactured in HSI’s Houston,

Texas factory, all our blowers are built

using exacting engineering, quality

control and testing procedures.

Our large parts inventory allows

us to provide blowers and repairs

with very short turnarounds.

We manufacture blower control

systems from the simplest flow meter

to completely integrated, PLC based

blower monitoring and control

systems capable of automatically

sensing air needs and regulating air

flow accordingly.

HSI also provides a complete array

of aftermarket services including parts,

shop overhauls, re-rates, field repairs

and preventive maintenance contracts.

MANUFACTURER OF

MULTISTAGE CENTRIFUGAL BLOWERS

HSI provides blowers for

a broad spectrum of

municipal and industrial

applications. Wastewater

treatment, landfill gas,

process air, dust collection,

tail gas, mine ventilation,

and pneumatic conveying

are just a few of the varied

applications with which

HSI has experience.

MULTISTAGE CENTRIFUGAL BLOWERS

MUNICIPAL AND INDUSTRIALAPPLICATIONS

Blower Housings Cast iron ASTM A48 grade 25/30

Air Deflector Ring Stainless steel

Joint SealRTV silicone

ImpellersCast aluminum ANSI AA356or fabricated aluminum onsome models. Stainless steel available

ShaftCarbon steel AISI 4140.Stainless steel available

LubricationGrease or oil

Air Seals Babbit labyrinth, aluminumlabyrinth or carbon ring seal

Tie RodsHigh strength steel

Bearings Ball, 10-yearminimum life perAFBMA B-10standard

ExternalCoatingTwo part epoxy

Internal CoatingSevere duty corrosionresistant coatings available

DURABILITY AND

PERFORMANCE

MODEL 51• Number of stages 1 to 10• 5� inlet, 5� discharge• Direct drive or belt drive• Babbit labyrinth air seals• Cast aluminum impellers• Grease lubrication,

oil optional

MODEL 52• Number of stages 1 to 10• 6� inlet, 5� discharge• Direct drive or belt drive• Babbit labyrinth air seals• Cast aluminum impellers• Grease lubrication,

oil optional

MODEL 61• Number of stages 1 to 9• 6� inlet, 6� discharge• Direct drive • Babbit labyrinth air seals• Cast aluminum impellers• Grease lubrication,

oil optional

MODEL 81• Number of stages 1 to 9• 8� inlet, 8� discharge• Direct drive • Babbit labyrinth air seals• Cast aluminum impellers• Grease lubrication,

oil optional

MODEL 31• Number of stages 1 to 11• 3� inlet, 3� discharge• Direct drive or belt drive• Babbit labyrinth air seals• Cast aluminum impellers• Grease lubrication

OUR COMPLETE LINE OF

BLOWERS AND EXHAUSTERS

MODEL 82• Number of stages 1 to 9• 8� inlet, 8� discharge• Direct drive• Babbit labyrinth air seals• Cast aluminum impellers• Grease lubrication,

oil optional

MODEL 86• Number of stages 1 to 9• 8� inlet, 8� discharge• Direct drive• Babbit labyrinth air seals• Cast aluminum impellers• Grease lubrication,

oil optional

MODEL 126• Number of stages 1 to 7• 12� inlet, 12� discharge• Direct drive• Aluminum labyrinth air

seals, carbon ring available • Cast or fabricated

aluminum impellers• Oil lubrication

MODEL 141• Number of stages 1 to 7• 18� inlet, 14� discharge• Direct drive• Babbit labyrinth air seals • Cast aluminum impellers• Oil lubrication

MODEL 186• Number of stages 1 to 5• 24� inlet, 18� discharge• Direct drive• Aluminum labyrinth air

seals, carbon ring available • Fabricated aluminum

impellers• Oil lubrication

Our strategy is to stock a large inventory of

blower parts and accessories so that we can

react immediately to our customers’ needs.

This allows us to ship most parts orders

within 24 hours and to cut our delivery time

on whole blowers to less than two weeks in

expedited situations. Our warehouse is full

of cast iron housing components, impellers,

shafts, seals, bearing kits and more.

We also supply any accessories

required in the operation of multistage cen-

trifugal blowers such as motors, controls,

filter silencers, filter elements, expansion

joints, butterfly valves, check valves, valve

actuators, gauges, meters, sensors, cou-

plings, coupling guards, vibration isolation

pads and oilers. Many of these items we

keep in stock. We can provide technical

advice on sizing, troubleshooting and

repairing all these accessories.

A LARGE INVENTORY OF

BLOWER PARTSAND ACCESSORIES

From the simplest across the line starter

with an ammeter to a

complex PLC

controlled variable

frequency drive appli-

cation, HSI has the

expertise to provide

the control package

needed for any

blower application.

We have devel-

oped a line of standard

control packages from

which to choose. For

example, the HSI

2100 is PLC based

with full touch screen

interface and provides

monitoring, shut

down and trending

functions for vibration,

bearing temperature,

blower surge, and

motor overload. The

standard unit has three extra inputs that

A COMPLETE LINE OF

AUTOMATEDCONTROLS

can accommodate a variety of data such as

flow, pressure, tempera-

ture and dissolved

oxygen. The HSI 2100

can modulate automated

throttling valves, variable

frequency drives and

blow off valves. The unit

can be programmed to

communicate with all

types of plant control sys-

tems and extra cards can

be added to accommo-

date almost any control

requirement.

In addition to the HSI

2100 we have several

other models with various

levels of functionality all

the way down to a simple

calibrated analog amme-

ter. We can also design

and manufacture systems

using any brand of

equipment specified by the customer.

HSI has a team of engineers with over 50

years of combined blower manufacturing

and application experience. Our engineers

maintain close control over the quality of

our blowers by focusing on four major areas:

1. Detailed part drawings and specs –

every part is modeled in three dimen-

sions using Autocad. Dimensions,

tolerances and materials are determined

and thoroughly documented on the

drawings and specifications.

2. Strict quality control inspection

process–Every part we manufacture

undergoes a quality inspection which

includes a thorough check of dimensions,

materials and appearance.

OUR EXPERIENCED TEAM

ENGINEERING,QUALITY CONTROL,

ANDTESTING

3. Careful assembly process –The

method of assembly of each blower

model is specified and monitored to

assure consistency of blower performance

and quality. Special attention is paid to

internal clearances, the balancing of each

individual impeller and the balancing of

the assembled rotor.

4. Completed blower testing program–

Every blower passes a complete run test

before it leaves the factory. All test data

are recorded, analyzed and archived. If

desired by the customer, performance

and sound level tests are also provided.

At HSI we understand that it is service that

differentiates us from our competition. We

are on call 24 hours a day, including week-

ends, to meet our customers’ needs. Our

systems can accommodate quick deliveries. It

is not unusual for us to manufacture a new

blower or overhaul an existing blower in less

than two weeks if necessary. We can have

this level of flexibility thanks to our large

parts inventory and our excellent people.

We know that our service is only as good

as the people who provide it. We create a

work environment, which encourages initia-

tive and problem solving. Our managers,

foremen and senior technicians have an aver-

age tenure with the company of over ten

years. Several of these key people are stock-

holders and are, therefore, very motivated to

deliver outstanding service.

EXPERIENCED TECHNICIANS

SERVICE MAKES THE DIFFERENCE

Training is the key to continual

improvement. Our senior technicians each

lead assembly and field service teams. This

approach assures high quality work while

continually training our growing work-

force. We have over 100 years of

combined blower experience embodied in

our technicians and it shows in our

superior product and level of service.

HOUSTON SERVICE INDUSTRIES, INC.

7901 Hansen, Houston, Texas 77061Office: 713-947-1623 | Toll Free: 1-800-725-2291

Fax: 713-947-6409www.houserv.com | sales@houserv.com