SPX TG H15-50, Instruction Manual, Page: 20 / 110

20 A.0500.351 – IM-TGH/07.02 EN (10/2015)
3.8 Material options
Overall temperature
The TG H range is designed for high temperatures. The overall temperatures for selected casing
materials are shown in below table.
TG H
pump size
Minimum allowable temperature (°C) Maximum allowable temperature (°C)
Casing materials Casing materials
Stainless steel (R) Carbon steel (S) Nodular iron (N) Stainless steel (R) Carbon steel (S) Nodular iron (N)
2-32
–40 – – +200 – –
3-32
6-40
–40 –30
–
+250 +300
–
15-50
–25 +300
23-65
58-80
86-100
185-125
360-150
Remarks:
1. Maximum temperature of size TG H2-32 and TG H3-32 is limited to 200°C due to ball bearings
type 2RS.
2. Temperature limits must be considered depending on the used materials for bearing bushes and
shaft sealing .
3.9 Jacket options
S-jackets 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
Notice that the maximum pressure of 10 bar will be the limiting factor for use with saturated steam.
Saturated steam at 10 bar gives a temperature of 180°C.
T-jackets 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: 300°C
Maximum pressure at 300°C: 12 bar
3.10 Internals
3.10.1 Bush materials
Overview of bush materials and application field
Material Code S C B H U
Material Steel Carbon Bronze Ceramic Hard metal
Hydrodynamical
lubrication
if yes to maximum working pressure = 16 bar
if no 6 bar (*) 10 bar (*) 6 bar (*) 6 bar (*) 10 bar (*)
Corrosive resistance Fair Good Fair Excellent Good
Abrasive resistance Slight None None Good Good
Dry running allowed No Yes Moderate No No
Sensitive to thermal choc No No No Yes dT<90°C No
Sensitive to blistering in oil No > 180°C No No No
Oil aging No No > 150°C No No
Food processing allowed Yes No (antimony) No (lead) No (traceability) Yes
(*) These are not absolute figures. Higher or lower values possible in function of the application,
expected lifetime etc