Typical Physical Characteristics
|
Valvata |
|
|
|
|
J 460 |
J680 |
J 1000 |
|
|
|
|
|
|
|
|
|
|
|
|
ISO Viscosity grade |
|
|
460 |
680 |
1000 |
|
||
|
Kinematic Viscosity |
|
ASTM D 445 |
|
|
|
|
||
|
at 40°C |
|
460 |
680 |
1000 |
|
|||
|
mm2/s |
|
|
||||||
|
at 100°C |
mm2/s |
|
31,5 |
37,0 |
40,6 |
|
||
|
Viscosity Index |
|
|
|
ISO 2909 |
99 |
80 |
70 |
|
|
Density at 15°C |
|
|
kg/m3 |
ASTM D 4052 |
903 |
910 |
925 |
|
|
Flash Point COC |
|
|
°C |
ISO 2592 |
270 |
275 |
305 |
|
|
Pour Point |
|
|
°C |
ISO 3016 |
-6 |
-6 |
-6 |
|
Grade Selection
|
Lubricant Application |
|
Shell Grade |
Remarks |
||
|
Cylinders |
|
|
|
|
|
|
Steam Temperature |
|
|
Horsepower |
|
*Compounded oil should not be |
|
Up to 315°C |
|
|
Up to 500 |
Valvata or Vitrea Oils |
used where separation from the |
|
Up to 300°C |
|
|
Up to 1500 |
Valvata or Vitrea Oils |
condensate is important |
|
Saturated or wet steam |
Over 500 |
Valvata Oils J* |
|
||
|
up to 220°C |
|
|
|
|
|
|
Bearings |
|
|
|
|
|
|
Open crankcase engines |
|
Vitrea Oils |
# More viscous grades with more |
||
|
Enclosed crankcase engines |
|
Turbo Oils T# |
powerful engines |
||
Applications
Shell Valvata Oils J are quality refined, high viscosity mineral oils compounded with a small percentage of fatty oils. They are used, primarily, for the lubrication of steam cylinders working under high temperature, high pressure conditions, where low carbon formation and ‘steam washing’ are important considerations. They atomise more easily and with steam of moderate superheat and produce more tenacious lubricating films than ‘straight’ grades of the same viscosity.
- Steam cylinder lubrication
- Low speed enclosed gears
- Certain worm gears