Thermoplastic centrifugal pumps with mechanical seal

  • Available in self priming execution
  • Single, double and bellow seals
  • Max. 500 m³/h, max. 90 m, max. 120°C

Thermoplastic centrifugal pumps with mechanical seal

Compact series KR sealPro up to 50 m3/h

This series is close-coupled. The pump is mounted directly to the motor flange by means of a plastic bracket. This compact execution is perfectly suited as stationary pump or for use in machines.

Compact series KR Chemical standard up to 500 m3/h

This series is close-coupled, but the bracket is made of metal for maximum stability. This compact execution, thanks to a reduced number of wear parts compared with conventional long-coupled pumps, requires less maintenance and related expenses. It is optional available in a vertical execution Model KrV.

Long coupled series TK Chemical standard up to 500 m3/h

This configuration consists of a bare shaft pump, fully assembled with a standard motor and flexible coupling on a normalized glass fiber-reinforced polyester base plate according DIN 24.259. Thanks to the design according to the “back pull out” system, the total mechanical part of the pump can be removed without disassembling the piping or motor. Therefore it is easy to open the pump for cleaning, inspection or maintenance. The alignment is not disturbed and no unnecessary work or costs is created.

Construction

all parts that come in contact with the liquid are machined from solid blocks of plastic. Thanks to a special production method and the lack of welds, there is no risk for chemical cracking, a major advantage compared to injection molded pumps. PP is the standard material and covers a wide range of duties. For highly abrasive liquids (high percentage of solids), on request impellers or housing parts of rCh- 1000/hMPE (high Modulus Polyethylene) can be supplied. For extremely corrosive mixtures at higher temperatures even a fully PTFE pump is possible. although the pump shaft is not in direct contact with the liquid, it is protected by a replaceable plastic shaft sleeve. The gaskets are standard made of EPDM but may be ordered in Viton or Viton/ PTFE-covered.

Materials of construction min. max.
Polypropylene (PP) 0ºC + 80ºC
high Modulus Polyethylene (hMPE) - 50ºC + 80ºC
Polyvinylidenfluoride (PVDF) - 30ºC +120ºC
Polytetrafluorethene (PTFE) - 40ºC +140ºC
PP/PVDF/PE-EL = conductive plastics for aTEX-applications.

Thermoplastic centrifugal pumps with mechanical seal

Chemical pumps SealPro

Applications

For all transport or circulation duties of corrosive liquids, even high viscosity, with maximum efficiency. These series of pumps is equipped with a state of the art semi-open impeller with pressure release. It is fixed onto the shaft independent from the direction of rotation.

Materials

Standard is the material PPH that covers a very wide range of duties. For highly abrasive liquids (high % of solids), at special order, impellers or housing parts of High modulus HMPE are available. For highly corrosive mixtures at higher temperatures even a pump housing entirely made of virgin PTFE is available.

 

Materials of construction Abbrev. T min. oC T max. oC
Polypropylene PP 0 80
High Modulus Polyethylene HMPE -50 80
Polyvinylidenfluoride PVDF -30 120
Polytetrafluorethene PTFE -30 120

 

 

Materials of elastomers Abbrev. T min. oC T max. oC
EPDM E -40 150
Viton V -25 220
Polytetrafluorethene T -190 260

 

 

Technical details pumps  
Design pressure PN6
Design standard (BG5) DIN 24.256 - EN 22585 - ISO 2858
Max. system pressure 1.5 Bar with standard seal, 6 Bar optional
Min. flow 1 m3/h
Max. flow 50 m3/h
Max. head 45 m (60 Hz)
Max. viscosity 250 mPas
Max. solid size 2 mm
Technical details motors  
Standard Three-phase, multivoltage, TEFC
High efficiency IE2 efficiency level acc. IEC60034-30
Continuous duty S1
Multi Voltage up to IEC100 220-240/380-415V  50 Hz // 440-460 V 60 Hz
Multi Voltage above IEC100 380-415V/ 660V 50 Hz // 440-460 V 60 Hz
Protection class IP55 (IEC 34-5/ NEN-EN 60034-5)
Insulation Class “F” (ΔT=80 C);
Max. ambient temperature -30 to 40°C, at 1000 m.a.s.l.
Max. relative humidity < 95%
Optional available  
Other voltages f.i. 480 V/ 3 Ph/ 60 Hz
Other insulation f.i. Tropicalized
PTC Thermistors on windings
Water and/or dust protection: IP56, IP65, IP66, IPW56, IPW65 or IPW66

 

Materials of construction

Pos. Description Standard Alternative
100 Housing parts PPH HMPE PVDF PTFE
210 Pump shaft SS-316  
230 Impeller PPH HMPE PVDF PTFE
  Impeller type Semi-open Turbine
343 Pump bracket Plastic PPG  
400 Gaskets EPDM VITON V/PTFE encapsulated
421 Type mechanical seal Single inner double with flush
  Mechanical seal PTFE-glas/SIC SIC/SIC
477 Pressure spring Hast. C  
524 Shaft protecting sleeve PTFE-glas  
800 Motor 2, 4 or 6 pole  
900 Fasteners SS-316  


Chemical pumps KR/TK-HD

Appications

For all transport or circulation duties of corrosive liquids, even high viscosity, with maximum efficiency. This series of pumps is equipped with a state of the art semi-open impeller with pressure release. It is fixed onto the shaft independent from the direction of rotation. As from type 100-250 and above, a closed impeller for higher efficiency is standard.

Materials

Standard is the material PPH that covers a very wide range of duties. For highly abrasive liquids (high % of solids), at special order, impellers or housing parts of High modulus PE are available. For highly corrosive mixtures at higher temperatures even a pump entirely made of PVDF or virgin PTFE is available.

 

 

Materials of construction Abbreviation T min. oC T max. oC
Polypropylene PP 0 80
High Mudulus Polyethelene HMPE -50 80
Polyvinylidenfluoride PVDF -30 120
Polytetrafluorethene PTFE -40 140
Conductive plastics for ATEX- zones PP/PVDF/PE-EL

 

Materials of elastomers Abbreviation T min. oC T max. oC
EPDM E -40 150
Viton V -25 220
Polytetrafluorethene T -190 260

 

Technical details pumps  
Design pressure PN10 at 20 oC
Design standard DIN 24.256 - EN 22585 - ISO 2858
Max. system pressure 2.5 Bar with standard seal, 10 Bar optional
Min. flow 3 m3/h
Max. flow 600 m3/h
Max. head 90 m
Max. viscosity 250 mPas
Max. solid size 3 mm
Technical details motors  
Standard Three-phase, multivoltage, TEFC
High efficiency IE2 efficiency level acc. IEC60034-30
Duty Continuous duty: S1
Multi Voltage up to IEC100 220-240/380-415V  50 Hz // 440-460 V 60 Hz
Multi Voltage above IEC100 380-415V/ 660V 50 Hz // 440-460 V 60 Hz
Protection class IP55 (IEC 34-5/ NEN-EN 60034-5)
Insulation Class “F” (ΔT=80 C);
Max. ambient temperature Ambient temperature: -30 to 40°C, at 1000 m.a.s.l.
Max. relative humidity < 95%
Optional available  
Other voltages f.i. 480 V/ 3 Ph/ 60 Hz
Other insulation f.i. Tropicalized
PTC Thermistors on windings
Thermal or dust protection: IP56, IP65, IP66, IPW56, IPW65 or IPW66


Materials of construction

Pos. Description Standard Alternative
100 Housing parts PPH HMPE PVDF PTFE
210 Pump shaft SS  
230 Impeller PPH HMPE PVDF PTFE
  Impeller type Semi-open Closed Turbine 3-D
343 Pump bracket ST/Coated  
400 Gaskets EPDM VITON V/PTFE encapsulated
421 Type mechanical seal Single inner Bellow Double with flush
  Mechanical seal PTFE-glas/SSIC SSIC/SSIC  
477 Pressure spring Hast. C Coated  
524 Shaft protecting sleeve PTFE-glas  
800 Motor 2, 4, 6 or 8 pole  
900 Fasteners SS  


Thermoplastic centrifugal pumps with mechanical seal

Chemical pumps SealPro ordering code

Pump Materials Motor
 Model

Disch.

size

(D)

Pump

housing

size

Mater.

wetted

parts

 Impeller  Seal rotor  Seal stator

Double

seal

 Gask.  Pole  Power  Volt.  Phase  Freq.  Atex
KR 15 85 PP PP TG SI 2 E 2 0,18, 0,25 2 1 5 EX
  20 95 PVDF PVDF SI   V 4 0,37, 0,55 3 3 6  
25 125 HMPE HMPE   T   0,75, 1,1 4  
32 160   1,5, 2,2 6
40   3,0, 4,0  
50 5,5, 7,5

 

Chemical pumps KR/TK-HD ordering code

Pump     Materials           Motor        
Model Disch. flange size (D) Pump hosing size wetted parts impeller Seal rotor Seal tator Seal type Gaskets Pole Power kW Voltage Phase  Freq.    Atex  
 KR 32 160 PP PP TG SI  - E 2 0.75, 1.1 2  1  5 EX  
 KRV 40  200  PVDF  PVDF  SI    PK 1.5, 2.2  3  6  
 TK 50  250   HMPE  HMPE       2 3.0, 4.0      
  65             2BL   8  5.5, 7.5, 10      
  80                  11, 15, 18.5        
  100                  22, 30, 37        
  125                  45, 55, 75        
  150                           

 


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