CTM Magnetically Driven Centrifugal Pump

CTM Magnetically Driven Centrifugal Pumps

CTM Magnetically Driven Centrifugal Pump

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Description

What is a CTM Magnetically Driven Centrifugal Pump

Varying from the standard pumping mechanism, CTM Magnetically Driven Centrifugal Pump or ‘Mag’drive pumps are designed so that the motor is coupled to the pump by magnets, instead of a direct mechanical shaft. The drive magnet works the pump, ‘driving’ the pump rotor, which is magnetically coupled to the primary shaft driven by the motor. Magnetic Pumps are used in industries where leakage of the agent being pumped could cause damage, such as in the chemical or nuclear industries.

CTM Magnetically Driven Centrifugal Pump benefits

Design Features & Benefits

The CTM Mag Drive Centrifugal Pump is a close coupled compact pump ideal for service in little spaces like in OEM installations.

The wetted components are non-metallic injection moulded thermoplastics enabling excellent corrosion resistance.

Part No. Description
1 Pump Casing
2 Impeller (With Magnet)
3 External Magnet (Drive)
4 Isolating Shell (Rear Casing)
5 Static Bushing
6 Rotating Bushing

CTM Design

 

Magnet Cage System

The magnets are totally encapsulated in their cage with the unique system that avoids the use of resins and glue. This grants a safe system with better performance at high temperatures. Furthermore the impeller is injection moulded, resulting in excellent performance and no weak points.

The magnets are totally encapsulated in their cage with the unique system that avoids the use of resins and glue. This grants a safe system with better performance at high temperatures. Furthermore the impeller is injection moulded, resulting in excellent performance and no weak points.

Materials Data & Limits
Casing & Isolation Shell PP-GF (30%) or PVDF
Impeller PP or PVDF
Lantern (Not Wetted) PP-GF (30%)
Static Bushings Ceramic (Std.) or SiC
Rotating Bushings PTFE-Graphite (Std.) or SiC
O-Rings FKM, EPDM, FFKM, FEP / Silicon
Magnets NdFeB
Motor IEC standard, 3×400 VAC (other on request), 2900 rpm, IP55, B34 frame
Pressure Ratings CTM20:

 

PP pumps: PN4 at 20°C, PN2 at 70°C

PVDF pumps: PN4 at 20°C, PN2 at 80°C

 

CTM25, CTM32, CTM40 and CTM50:

 

PP pumps: PN6 at 20°C; PN2 at 70°C

PVDF pumps: PN6 at 20°C; PN2 at 90°C

Temperature Ranges PP Pumps: 0-70ºC

PVDF Pumps: 0-80ºC (CTM 20) / 0-90ºC (CTM25 – 50)

Kinematic Viscosity 200 cSt (max)
Dynamic Viscosity 10 cP (max)

 

Capacity Range

The CTM Mag Drive Centrifugal Pumps are capable of a wide range flow and pressures to suit most applications. The capacity overview is below with individual performance curves detailed overleaf.

CTM Capacity Range

CTM 20-7

CTM 20-7

CTM 25-8

CTM 25-8

CTM 25-10

CTM 25-10

CTM 32-12.5

CTM 32-12.5

CTM 40-12.5

CTM 40-12.5

 

CTM 50-12.5

CTM 50-12.5

General Dimensional Information

Dimensions are in mm and based on standard build constructions. DWG & STEP Files are available upon request for integration into system build designs.

CTM Dimensions

 

Model CTM 20-7 CTM 25-8 CTM 25-10 CTM 32-12.5 CTM 40-12.5 CTM 50-12.5
A 70 90 100 105 105 110
B 48 58.5 63 56 56.5 54
C 93.5 100.5 136.5 164 165 189
ØE 15 18 18 15 23 30.8
øF 15 18 18 23 30.5 42
G ¾” 1” 1” 1¼” 1½” 2”
H ¾” 1” 1” 1” 1¼” 1½”
L 248.5 279 334.5 374.5 402.5 446 453
M 36 40 45 54.5 56 63 70
N* 71 80 80 100 125 140
P* 9 10 10 13 14 15
Q 56 63 71 80 90 100 112
R 35 39.5 43.5 58.5 58.5 52
S* 90 100 112 125 140 160 190
T 112 126 141 160 170 200 230
U* 5.5 7 7 10 10 12
Motor
Power, kW 0.12 0.25 0.55 0.75 0.75 1.1 1.5 2.2 3.0 4.0
Frame Size 56 63 71 80 90 100 112
Weight, Kg (PP) 4.3 5.7 8.75 9 11.7 15.7 24 25.5 31.55
Weight, Kg (PVDF) 4.45 5.9 9.2 9.4 12.2 16.2 24.65 26.2 32.15
Optional Connections
Flanged DN25 DN25 DN32 / DN25 DN40 / DN32 DN50 / DN40
Hose Tails Ø25 Ø25 Ø32 / 25 Ø40 / 32 Ø50 / 40

Connection Options

BSPT M (Standard)

Flanged to DIN2633 (PN 10/16)

Hose Tails

 

Motor Options

The CTM units are fitted with Safe Area IP55 Motors in Aluminium Casings as standard and are in line with all current Energy Efficiency Class legislation.

Motor Powers vary from 0.12 kW up to 4 kW in standard IEC frame sizes in both 50 & 60 Hz and Single or 3 Phase.

S1 Duty Class is standard.

2 & 4 Pole are supplied as standard options however 6 Pole (1000 rpm) & 8 Pole (800 rpm) as well as 2 Speed can be provided upon request as well.

 Cast Iron Casings can be supplied upon request to provide a more robust casing material for external applications or particularly arduous environments.

Special Voltages are also available upon request, 110V & 500V for example.

 PTC Thermistors can also be supplied upon request when motors are to be controlled by variable frequency drives and to monitor motor temperature rises.

Permitted Loads on Inlet & Outlet Connections

We recommend not exceeding the following loads & forces to ensure safe operation of the pump.

CTM Permitted loads

CTM 20 CTM 25
Direction Load

(N)

Moment of Force

(Nm)

Direction Load

(N)

Moment of Force

(Nm)

X 15 3 X 15 3
Y 20 4 Y 20 4
Z 15 3 Z 15 3
CTM 32 CTM 40
Direction Load

(N)

Moment of Force

(Nm)

Direction Load

(N)

Moment of Force

(Nm)

X 15 3 X 15 3
Y 20 4 Y 20 4
Z 15 3 Z 15 3
CTM 50
Direction Load

(N)

Moment of Force

(Nm)

X 15 3
Y 20 4
Z 15 3

 

Additional information

Pump Sizes

CTM 20, CTM 25, CTM 32, CTM 40, CTM 50

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