What to Make Of Pfeiffer Oil Viscosity?
Posted: Wed Feb 08, 2017 3:18 am
Pfeiffer officially specifies that you use their own P3 oil in their small rotary vane pumps such as the Duo 2.5 (It would be pretty funny if they recommended that you use Leybold's oil, after all!)
This is a little peculiar. P3 is a bit less than twice as viscous as the standard oil specified for most similar small pumps, about Grade 100 (ISO) It is a bit more expensive, much less available, and doesn't have the multitude of alternatives and substitutes that the common "19" oil (which is apparently ISO grade 68, sometimes more like 58) has.
On the other hand, Pfeiffer seems to give their blessing to using their own "19" oil in the Duo 2.5, and a few other vendors suggest using their particular "19" oils in this pump as well. I'm not sure what makes the Duo 2.5 different from nearly every other small 2-stage industry-grade pump with around 1 to 2 CFM.
What should I use in this pump? Should I just get my hands on the P3 once I've finished flushing the thing out?
This is a little peculiar. P3 is a bit less than twice as viscous as the standard oil specified for most similar small pumps, about Grade 100 (ISO) It is a bit more expensive, much less available, and doesn't have the multitude of alternatives and substitutes that the common "19" oil (which is apparently ISO grade 68, sometimes more like 58) has.
On the other hand, Pfeiffer seems to give their blessing to using their own "19" oil in the Duo 2.5, and a few other vendors suggest using their particular "19" oils in this pump as well. I'm not sure what makes the Duo 2.5 different from nearly every other small 2-stage industry-grade pump with around 1 to 2 CFM.
What should I use in this pump? Should I just get my hands on the P3 once I've finished flushing the thing out?