SPX Cooling Technologies TG MAG23-65 用户手册

18

A.0500.551 – IM-TGMAG/02.00 EN (02/2008)

3.7.3   Influences

The real sound level of the pump unit can for several reasons deviate from the values listed in the 
tables above.

•  Noise production decreases when pumping high viscosity liquids due to better lubricating and

damping properties. Moreover the resistance torque of the idler is increasing due to higher liquid 
friction which results in lower vibration amplitude.

•  Noise production increases when pumping low viscosity liquids combined with low working

pressure because the idler can move freely (lower charge, lower liquid friction) and the liquid 
does not dampen much.

•  Vibrations in piping, vibrating of the baseplate etc. will make the installation produce more noise.

3.8  Maximum and minimum allowable temperature

The maximum allowable temperature of the pumped medium is 260°C but the temperature limits 
must be considered depending on the material used for the idler bearing bush, O-ring material and 
material of the permanent magnets used in the magnetic coupling. The minimum allowable tempera-
ture is -20° for cast iron and -40°C for stainless steel casing parts.

3.9   Jacket options

are designed for use with saturated steam or with non-dangerous media. They are  

provided with cylindrical threaded connections according to ISO 228-I. 
Maximum temperature: 

200°C

Maximum pressure: 

10 bar

 are designed for use with thermal oil and apply to the DIN4754 safety standard for 

thermal oil transfer. This DIN standard specifies flange connections for temperature from 50°C 
upwards and jackets of ductile material for temperature from 200°C upwards. Both are provided  
in the T-design. 

T-jackets could also be used for over heated steam or more dangerous media. 
The flanges have a special shape with welding neck based on PN16 dimensions.
Maximum temperature: 

260°C

Maximum pressure at 260°C:   12 bar

3.10  Internals

3.10.1  Bush materials

Hydrodynamical
lubrication

if yes

to maximum working pressure = 16 bar

if no

6 bar (*)

10 bar (*)

6 bar (*)

6 bar (*)

10 bar (*)

10 bar (*)

Corrosive resistance

Fair

Good

Fair

Excellent

Good

Good

Abrasive resistance

Slight

None

None

Good

Good

Good

Dry running allowed

No

Yes

Moderate

No

No

No

Sensitive to thermal shock

No

No

No

Yes dT<90°C No

No

Sensitive to blistering in oil

No

> 180°C

No

No

No

No

Oil aging

No

No

> 150°C

No

No

No

Food processing allowed

Yes

No (antimony)

No (lead)

Yes

Yes

Yes