Lower saturation vapor pressure,narrow fraction, high molecular weight and high volume flow rate
Eject out gas with supersound speed to reach stated vacuum degree when heated to boiling situation
Reasonable compositions, good anti-oxidation, thermal stability
HFV-K 150 has property of low back-steaming rate,condense into new working fluid when
contacting cold wall
Application
Suitable for vapor steam vacuum diffusion pump, model should be selected according to different pressure
Can be applied for vacuum distillation, vacuum metallurgy, vacuum coating and vacuum furnace
Also be used as fluid for vacuum diffusion pumps in electronic spaceflight and nuclear industry
Typical data
Item / Model
HFV£K46
HFV£K68
HFV£K100
HFV£K150
Testing method
Kinematic viscosity
(40¡æ)£¬mm2 /s
19.8¡«24.2
28.8¡«35.2
90¡«110
135¡«165
GB/T265
Average Molecular Weight
380
420
450
500
SH/T0220 AppendixB
Flash Poin¡æ
220
230
250
260
GB/T267
Saturation Vapor Pressure kPa
5.0¡Á10-9
1.0¡Á10-9
5.0¡Á10-10
3.0¡Á10-10
SH/T0293
Ultimate pressure£¬kPa
7.0¡Á10-8
5.0¡Á10-8
3.0¡Á10-8
2.0¡Á10-8
SH/T0294
Note:Technical data above are values of typical sample,actual parameter will be get by measuring
products practically
