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L_900Liquid Ring Vacuum Pumps and Compressors

L_Series

L_900 Performance you can count on

Pulp and paper industry

Process industries

Geothermal plants

nash_elmo Industries L_900 3

L_900: powerful, efficient, reliable

For over a century, both Nash and Siemens (elmo) have produced robust,

efficient and reliable liquid ring pumps and compressors to meet the

rigorous needs of such industries as

� Pulp and paper industry

� Mining

� Geothermal plants

� Sugar industry

� Process industries

... and many others

When the two companies merged in 2002, we combined our product lines to

enable us to offer the highest performance, reliability and efficiency in every

product class. Each model of the L_900 pumps and compressors is equipped

with an industry proven polyisoprene-lined pump casing to protect the pump

internals against corrosion and erosion. The unique inlet and discharge con-

figuration of each machine offers flexibility in piping and the top discharge

capability of the 2BE3 models eliminates the need for a trench and minimizes

floorspace. Each pump is 100% factory performance tested prior to shipment

and is backed by a two year warranty against materials and workmanship.

Model 2BE3

Model P 2620

4 nash_elmo Industries L_900

Split vacuum capability

With the addition of the center partition wall (or center shroud) in

the pump body, each half of the L_900 can operate at different

vacuum levels with differential pressures up to 338 mbar (10 in. Hg)

between the two pump halves. The advantage of this is significant

because it allows the use of fewer vacuum pumps which saves

space and installed cost.

Quiet operation and easy maintenance

Despite their size and capacity, the L_900 Series are amazingly quiet

during operation. Sound levels of 72 to 85 dBa (measured at a distance

of 1 meter (3.3 ft) from the source) have been recorded for even the

largest of the pump models.

Internal inspections are easily performed either through large

inspection ports located in the pump heads or through unused

discharge connections. No dismantling of the pump is required.

Robust, reliable and ready

Because the internal components rotate without making contact,

liquid ring vacuum pumps are practically wear and maintenance

free. The standard polyisoprene lining on the pump body resists

aggressive process gases and liquids to provide exceptional corrosion

resistance. For added corrosion resistance, stainless steel internal

components are available in certain models. Double-row tapered

roller bearings increase life in both belt and direct drive applications.

No matter what your application, the L_900 is ready to handle

all of your process needs!

Features Benefits

Polyisoprene lined pump body

Stainless steel components available

Multiple inlet & discharge configurations

Top discharge capability on 2BE3 models

Self-recirculating capability on 2BE3 models

Split vacuum capability

Variable porting

Unique internal construction

Large inspection ports

Double extended shafts

100% performance tested prior to shipment

Backed by two year warranty and over 100 years

of vacuum and compressed gas experience

Superior corrosion resistance

Added corrosion resistance, application flexibility

Piping flexibility

Eliminates need for trench, minimizes floorspace

Eliminates need for a pressurized external seal

water source

Installation flexibility, minimizes number of pumps

Handles entire vacuum range without changing

pump internals

Minimizes scale build-up

Easier internal inspections

Additional installation choices

Trouble-free startup and operation

Peace of mind

L_900 Technical highlights


Installation Flexibility

Due to the design of the pump heads, the L_900 models offer many

options for connecting both the inlet and discharge piping to simplify

installation in both new facilities or existing facilities where headroom

and space is limited.

From the vertical and horizontal inlet capability of the 2BE3 and P 2620

models to the top discharge capability of the 2BE3 models, the L_900

Series offers the best solution for your application.

Contact your local nash_elmo reprensentative or direct sales person to

discuss how the L_900 will fit your specific process needs.

Self-recirculation capability

The 2BE3 models help minimize water consumption through its ability to

internally recirculate seal water – without the need for circulating

pumps or external controls. The design of the internals also allows the

pump to draw water from an atmospheric tank without an external

pumping source alleviating the need for expensive pumps and control

systems.

Inlet

Inlet

Discharge

Discharge

2BE3 Exploded drawing

cfm

m3/h 0 8,500 17,000 25,500 34,000

0 5,000 10,000 15,000 20,000 25,000

P 2620

2BE3 72

2BE3 67

2BE3 62

2BE3 60

2BE3 52

2BE3 50

2BE3 42

2BE3 40

2BE3 32

2BE3 30

42,500


Inlet

Discharge

Discharge

With eleven pump models and capacities that range from 2,500 to

37,000 m3/h (1,500 cfm to 22,000 cfm), the L_900 Series has a pump

to meet your specific process needs. Our largest model, the P 2620,

with a capacity range of 22,000 to 37,000 m3/h (14,000 cfm to

22,000 cfm) offers an economical solution for most high volume

applications found in the paper and mining industries.

L_900 Capacity range

P 2620

B

C

D

2

Suction

Discharge

A1A

E


L_900 Vacuum pumps in the paper industry

Model BA1 A2 C D E Suction & dischargeflange connection

P 2620 584 4300 2030 2005 900 3040 DN400 DN350 mm23 169 80 79 36 120 16-IN. FLG. 14-IN. FLG. inches

2BE3 72 3590 3945 2095 2030 1060 2500 DN400 DN400 mm141 155 83 80 42 98 16-IN. FLG. 16-IN. FLG. inches










All dimensions are approximate.

Model 2BE3 30 – 2BE3 72

Model P 2620

B

1A

C

D

2A

E


For 100 years, we have been assisting our customers in making the right vacuum pump

or compressor choice. As your engineering partners, we will provide you with a

nash_elmo performance analysis which includes a review of your particular process

requirements, and provides you with alternative means for meeting your process needs.

We will supply engineering data and application information, along with short- and

long-term cost comparisons.

Beginning today and throughout the life of every nash_elmo system, our engineers are

ready to support you to meet your vacuum and compressor process tasks.

Factory tested

Before any nash_elmo vacuum pump or compressor is shipped out of our factory, it is

performance tested to meet the highest standards. We stand behind our products: every

nash_elmo L_900 pump comes with a TWO-YEAR WARRANTY. Our new test bay gives us

the capability to simulate nearly all real operating conditions for liquid ring pumps.

A global service network with local support

nash_elmo maintains service centers strategically located throughout the United States,

Europe and Asia. Each center is staffed by specialists with considerable application

know-how. They have original factory replacement parts in stock and are equipped

with the tools, fixtures and special machinery necessary for pump and compressor

repair. The nash_elmo commitment to service extends to its regional distribution cen-

ters and retailers. Stocked with inventories of factory parts and purchased components,

our distribution centers can deliver pumps and parts anywhere, any time. We are also

able to service vacuum pumps and compressors of other makes and models.

A new company, a unified vision

nash_elmo is more than a new company. It is the fusion of global leaders in the

development, design and application of vacuum and compressor system technology.

Our combined resources give us the ability to provide the best solution to any industrial

need virtually anywhere in the world. We are a company with an extensive range of

products and services and an unmatched reputation for reliability. Because nash_elmo

is a company with the resources to turn the most ambitious vision into reality and to

put that vision to work for you.

Commitment, reliability and worldwide support

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European Headquarters

Nuremberg, Germany

Katzwanger Straße 150

D-90461 Nürnberg

Tel.: +49 911 1454 0

Order-No: VNE:B-PB003-A2-EN

Printed in Germany

Dispo 27801

2238/018 6.0 / 04-2004

© 2004 All rights reserved

nash_elmo Industries

www.nash-elmo.com

[email protected]

Corporate Headquarters

Trumbull, CT USA

9 Trefoil Drive

Trumbull, CT 06611-1330

Tel.: +1 800 553 6274

Other nash_elmo product lines

L_Series: Liquid Ring Pumps

D_Series: Dry Pumps

Robust technology for the highest demands and varied applications

Machines in the L_Series distinguish themselves through low opera-

ting temperatures and are suitable for handling splash water, steam

and condensates. They were developed for the toughest applications

and can safely and reliably extract or compress even explosive gas/

steam mixtures (ATEX-certified). Selection of a suitable operating

liquid enables the L_Series vacuum pumps and compressors to be

optimally integrated into processes. Thanks to their low operating

costs and extensive performance range up to 37,000 m3/h

(22,000 cfm), they excel in any application.

Proven, reliable and extremely quiet

Whether vacuum pumps, compressors or systems for conveying air,

gases or air/gas mixtures, the extensive range of products in the

G_Series meets the widest range of requirements. Thanks to their

variable voltage motors, many are usable anywhere in the world

without the need for conversion. In addition to their compact con-

struction, full UL/CSA certification and innovative design, G_Series

pumps and compressors offer a comprehensive power range up to

2,500 m3/h (1,470 cfm), maximum power density and a wide selec-

tion of accessories, including frequency converters.

Simple design for varied applications

The vane pumps in our V_Series are known for their robust design,

easy handling and long service life. Furnished with an extremely

sturdy metal coating as well as installation- and service-friendly

plug & play functionality, these high performance machines are

extremely quiet in operation, and can meet even the most chal-

lenging industrial demands while covering an impressive perfor-

mance range up to 4,000m3/h (2,350 cfm) and 10 bar g (145 psig).

High reliability with low operating costs

The dry-running vacuum pumps in our D_Series are explosion-proof

and were specially developed for production processes involving

sensitive materials. Throughout the entire process, they operate

condensation-free – and therefore corrosion-free – because there

are no operating fluids to mix with the process gases. As a result,

discharge gases can simply be collected and/or returned to the process.

There are no waste products. In addition, all pumps in the D_Series

are highly efficient and provide a constant suction capacity over an

extremely wide range of pressures with a performance range up to

to 2,200 m3/h (1,300 cfm).

V_Series: Vane Pumps

G_Series: Gas Ring Blowers

n e l 900 en int - istcgroup.com ring vacuum pumps and compres… · nash_elmo industries l_900 3...

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