Alfa Laval LKH Evap Centrifugal pumps

Introduction

The Alfa Laval LKH Evap Centrifugal Pump is a premium

pump for use in hygienic applications. As a low-NPSHr, high

efficiency centrifugal pump, the LKH Evap is a tailored

evaporator pump supported by strong and extensive

documentation, including a comprehensive vacuum curve

package. It features a special scraper impeller, ClearFlow, that

solves the product buildup problem in high solids applications,

which can prolong production time between cleaning.

Precision-engineered, the LKH Evap pump delivers greater

energy efficiency than similar pumps. Its optimized design,

premium motor, tight tolerances and advanced impeller

design minimize recirculation and reduce energy

consumption.

Applications

The LKH Evap Centrifugal Pump is designed for hygienic

applications across the dairy, food, beverage, brewery,

alcohol, ethanol, starch and chemical industries. It is ideal for

use in evaporation duties for applications, such as liquid

concentration and powder processing as well as plant and

equipment dewatering.

The LKH Evap pump is available in 10 sizes to handle

capacities up to 280 m3/h and differential pressures up to 11

bar at 50 Hz.

Benefits

• Energy efficient: superior efficiency resulting in reduced

energy consumption and CO2 footprint.

• Hygienic: designed according to the most stringent

hygienic design standards and with verified and effective

Cleaning-in-Place.

• Low NPSHr: reduced NPSHr enables optimized system

designs.

• Maximized uptime and reduced maintenance costs: robust

mechanical design and ease of maintenance with modular

front-loading seals.

Standard design

All media contacting steel components like pump casing,

impeller, impeller nut and backplate are in W. 1.4404 (AISI

316L). A stainless steel shroud protects the motor and four

adjustable stainless steel legs support the complete unit.

A compression coupling securely attaches the stub shaft to

the motor shaft with precision alignment, and the semi-open

impeller with a special vane design ensures efficient and

gentle handling of the product as it moves through the pump.

As standard, the LKH Evap pump is equipped with a single

mechanical shaft seal but is also available with a single flushed

or a double mechanical shaft seal. The front-loading shaft

seal, with the spring and washers mounted on the

atmospheric side, makes maintenance fast, easy and

inexpensive. It takes just a few minutes to replace the shaft

seal. In addition, the balanced design minimizes the risk of

seal opening during unforeseen pressure shock.

LKH Evap is available with the Clear Flow Impeller which is to

be used in applications where there is a risk of building up a

hard layer of product between impeller and backplate.