KRAL W series screw pumps

Flange

Flange

The flange is designed for mounting the pump into a tank.

Installation

Installation

When installed in the tank, the discharge flange is located above the tank cover.

Leakage

Leakage

The internal leakage return is especially important in case of dry-well installation.

Hydrodynamic balance

Hydrodynamic balance

Hydrodynamic balance is applied to reduce wear and noise emission.

				KRAL W Series Screw Pumps.
			

                The KRAL pump for difficult fluids.
            

The W series from KRAL is primarily used when dirty or low-viscosity media are used. Robust polymer coating and continuous flow rates at differential pressures up to 120 bar – these features are combined in the KRAL W series screw pump.

DOWNLOADS

Go to KRAL GmbH and download the document 
➔

				Operation, materials, components.
			

Delivery rate: 15 to 290 l/min.

Max. differential pressure: 120 bar.

Viscosity: > 1 mm²/s.

Max. temperature: To 180 °C, magnetic coupling to 300 °C.

Installation: Wet or dry.

Spindle housing: Nodular cast iron EN-GJS-400, polymer-coated or other material options.

Screws: Steel, nitrided.

				Optimum pump for special requirements.
			

Pumped fluids such as cooling lubricants are difficult liquids. They contain abrasive dirt, mostly metal residues, and must be pumped at high pressure. In addition, they have a very low viscosity of only about 1 mm²/s.

In the KRAL screw pump of the W series, the screw material and the casing coating have been designed for improved sliding properties in such a way that low viscosity fluids can be pumped with high efficiency.

The running casing is coated with a resistant polymer that can absorb particles. The balancing cylinder of the screw pump has orifice insertions to reduce the leakage rate, therefore efficiency remains high.

                                    Find out more
                        

				KRAL pumps for special requirements.
			

Compared with other screw pump principles, KRAL screw pumps offer a high flow rate while requiring little space. KRAL pumps deliver continuously and with low pulsation, which protects the pumped media even under difficult conditions.

				Installation options.
			

The KRAL W series 
screw pump
 can be designed for dry or wet-well installation. For a vertical wet-well installation, a mounting plate is provided.

 

				Your advantages.
			

Resistant, polymer-coated running casing absorbs particles.
 
High pressure up to maximum 120 bar at low viscosity.
 
 
Conveying abrasive liquids.
 
 
 
Gentle conveying of the liquid.
 
 
Low pulsation, quiet.
 
Multiple installation variations available.
 
For many different applications – as you can see in our product catalog or on our website 
pump overview
.

                            Technical data.
                            

                            Models.
                            

                            Operating instructions.
                            

 
 
 
Technical data
 
15-26
 
32-54
 
55-85
 
105-118
 
 
 
 
 
Qth
 (1450 min
-1
, 0 bar)
 
l/min
 
15-26
 
32-54
 
55-85
 
105-118
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Max. pressure at pressure flange
 
bar
 
120
 
120
 
120
 
120
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Temperature max. pumped liquid
 
°C
 
 
 
 
 
 
 
 
 
 
 
with radial shaft seal NBR
 
 
 
90
 
90
 
90
 
90
 
 
 
with radial shaft seal FKM
 
 
 
150
 
150
 
150
 
150
 
 
 
with mechanical seal standard
 
 
 
150
 
150
 
150
 
150
 
 
 
with mechanical seal hard material
 
 
 
180
 
180
 
180
 
180
 
 
 
with magnetic coupling
 
 
 
300
 
300
 
300
 
300
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Viscosity
 
mm²/s
 
 
 
 
 
 
 
 
 
 
 
min.
 
 
 
1.0
 
1.0
 
1.0
 
1.0
 
 
 
max.
 
 
 
100,000
 
100,000
 
100,000
 
100,000
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Max. pressure at suction flange
 
bar
 
 
 
 
 
 
 
 
 
 
 
with radial sealing ring
 
 
 
6
 
6
 
6
 
6
 
 
 
with mechanical seal standard
 
 
 
6
 
6
 
6
 
6
 
 
 
with mechanical seal hard material
 
 
 
6
 
6
 
6
 
6
 
 
 
with magnetic coupling
 
 
 
6
 
6
 
6
 
6
 
 
 

				W series flange screw pump.
			

Universal pump for horizontal installation.

				In-tank W series screw pump.
			

Pressure port outside of the tank.

DOWNLOADS

Go to KRAL GmbH and download the document 
➔

    Return
  

Menu

Screw Pumps.
Flow Measurement.
Flowmeters.
Display and Processing Unit.
Smart Support Software.
Special Projects.
Services.
Sales and Service Partner.
 
 
About Us.
Company.
Exhibitions.
 
Partner Portal.
Blog.
Downloads.
 

Search

Pumps

Contact

KRAL Pumps
Serial Production Program

				Go to KRAL GmbH and find out more about the serial production program for frequently used pump products.
Faster delivery with best price guarantee incl. our download package with an operating data sheet, 3D model, dimension sheet and a product information sheet.

Submit

				Contact
			

                Anytime and anywhere around the world
            

 

KRAL-USA, Inc.
 901A Matthews-Mint Hill Rd.
 Matthews, NC 28105
 USA
 
 P.O. Box 2990
 Matthews, NC 28106
 
 Tel.: (704) 814 6164
 e-mail: 
sales@kral-usa
-nospam
.com

Independent sales and service partner of KRAL GmbH

Get in contact with Kral-USA

                KRAL-USA, Inc.

                Geschäftseinheit Pumpen

                Tel.: 
(704) 814 6164

e-mail

 

				Products.
			

Screw Pumps.

Flow Measurement.

Special Projects.

				Service.
			

Pump Services.

Flow Measurement Services.

Downloads.

				Contact.
			

Sales and Service Partner.

Your Feedback.

				Company.
			

Exhibitions.

Company.

Linkedin
YouTube
© KRAL-USA, Inc.
Terms of Use
Privacy Policy
GTC

Back

Serial Pumps

3D download package inclusive