CTM Magnetic drive pumps

Overview

CTM pumps are used in most industries where liquids are pumped. The pumps handle many types of low and normal viscous clean liquids such as chemical aggressive and toxic.

Typical applications

Industry	Example of application
Chemical stockists	Transfer of various chemicals from storage tanks to smaller containers
Surface treatment	Transfer, filtering and circulation of surface treatment baths
Food and beverage	Pumping of CIP detergent used for cleaning of pipes and other food process equipment
Water treatment	Dosing of acids and alkalis used as cleaning chemicals in nanofiltration
Chemical manufacture	Pumping of chemicals in industrial detergent equipment
Demineralizing	Demi-water circulation and transfer in many industrial applications
Photo processing	Transfer of photo develop chemicals and inclusion in processing machines
Liquid crystal manufacture	Pumping of concentrated acids and alkalis

Material of components

Component	Material/Info
Pump casing and isolation shell (rear casing)	PP (GF 30 %) or PVDF
Impeller	PP or PVDF
Lantern (not wetted)	PP (GF 30 %)
Static bushings	Ceramic (standard) or SiC
Rotation bushings	Charbographite (standard) or SiC
O-rings	FXM (standard), EPDM orFFKM Kaflon
Magnets	NdFeB

Technical data

MODEL	CTM20-7	CTM25-8	CTM25-10		CTM32-12.5		CTM40-12.5		CTM50-12.5
A	70	90	100		105		105		110
	2.76	3.54	3.94		4.13		4.13		4.33
B	48	58.50	63		56		56.5		54
	1.89	2.30	2.48		2.20		2.22		2.13
C	93.5	100.5	136.5		164		165		189
	3.68	3.96	5.37		6.46		6.50		7.44
ØE	15	18	18		15		23		30.8
	0.59	0.71	0.71		0.59		0.91		1.21
ØF	15	18	18		23		30.5		42
	0.59	0.71	0.71		0.91		1.20		1.65
G	¾”	1”	1”		1 ¼”		1 ½”		2”
	¾	1	1		1 ¼		1 ½		2
H	¾”	1”	1”		1”		1 ¼”		1 ½”
	¾	1	1		1		1 ¼		1 ½
L	248.5	279	334.5		374.5		402.5		446	453
	9.78	10.98	13.17		14.74		15.85		17.56	17.83
M	36	40	45		54.5		56		63	70
	1.42	1.57	1.77		2.15		2.20		2.48	2.76
N*	71	80	80		100		125		140
	2.80	3.15	3.15		3,94		4.92		5.51
P*	9	10	10		13		14		15
	0.22	0.28	0.28		0.51		0.55		0.59
Q	56	63	71		80		90		100	112
	2.20	2.48	2.80		3.15		3.54		3.94	4.41
R	35	39.5	43.5		58.5		58.5		52
	1.38	1.56	1.71		2.30		2.30		2.05
S*	90	100	112		125		140		160	190
	3.54	3.94	4.41		4.92		5.51		6.30	7.48
T	112	126	141		160		170		200	230
	4.41	4.96	5.55		6.30		6.69		7.87	9.06
U*	5,5	7	7		10		10		12
	0.22	0.28	0.28		0.39		0.39		0.47
MOTOR
POWER	0.12 kW	0.25 kW	0.55 kW	0.75 kW	0.75 kW	1.1 kW	1.5 kW	2.2 kW	3.0 kW	4.0 kW
SIZE	56	63	71	71	80	80	90	90	100	112
WEIGHT PP [kg]	4.3	5.7	8.75	9	11.7	15.7	24	25.5	31.55	-
WEIGHT PVDF	4.45	5.9	9.2	9.4	12.2	16.2	24.65	26.2	32.15	-
OPTIONAL CONNECTIONS
FLANGE	-	DN25	DN25		DN32 / DN25		DN40 / DN32		DN50 / DN40
HOSE	-	Ø25	Ø25		Ø32 / Ø25		Ø40 / Ø32		Ø50 / Ø40

General characteristics

Motor	IEC standard, 3x400 VAC (other on request), 2900 rpm, IP55, B34 frame
Pressure rating	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	PP pumps: 0°C - 70°C PVDF pumps: 0°C - 80°C (CTM20); 0°C - 90°C (CTM25, 32, 40, 50)
Kinematic viscosity	200 cSt (max)
Dynamic viscosity	10 cP (max)

Key components

CTM is a close coupled compact pump ideal for service in little spaces like in OEM installations.
Non-metallic pumps
The wetted components are non-metallic injection moulded thermoplastics enabling excellent corrosion resistance.
The version in PP-GF (glass fibre reinforced polypropylene) provides great mechanical strength and allows liquid temperatures up to 70°C.
The PVDF (PolyVinylidine DiFluoride) version has the superior chemical resistance and allows temperatures up to 80°C.

The reliable design without shaft

The impeller magnet assembly is designed with very powerful bushings where a conventional crack sensitive shaft is not needed. This results in a pump that has fewer parts and is very reliable in service.

Excellent performance with magnet cage system

Our magnets in NdFeB (Neodymium-iron-boron) with our patent pending magnet cage system have a superior strength also under demanding circumstances. The power from the drive is transmitted even at high temperatures and with high specific gravity liquids.

1. Pump casing
2. Impeller (with magnet)
3. External magnet (drive)
4. Isolation shell (rear casing)
5. Static bushing
6. Rotating bushing

The magnet cage system

Working principle

How they work

The power from the motor is transmitted to the centrifugal impeller by means of a magnetic coupling. A so called isolation shell between the drive magnet and the impeller magnet separate the liquid side from the drive.

Working principle
1) Drive magnet, connected to the motor
2) Isolation shell (rear housing) separating the liquid side from the atmosphere
3) Impeller magnet assembly, driven by the drive magnet

Certificates

FDA §21 CFR 177 materials
FDA (U.S. Food and Drug Administration) §21 CFR 177 lists polymers, e.g. rubber and plastic materials approved for equipment in contact with food products.

EN 10204 material traceability
The EN 10204 norm gives you a checklist and traceability of materials used in the equipment. 2.1 is a general statement of compliance with material specifications, while 3.1 provides specific track records all the way to the steel mill batch (normally only on metals in contact with the product).

CE conformance
A product classified as machinery that carries the CE mark fulfill the essential health and safety requirements of the EC Machinery Directive 2006/42/EEC.

ATEX Directive 94/9/EC
Equipment intended and approved for safe operation in potentially explosive atmospheres. The equipment is divided in main groups, categories, apparatus groups and temperature classes to define its suitability in the actual zone.