The requirements for rotary pump oils are:
Sufficiently low vapor pressure
Correct viscosity
Adequate lubrication properties
Chemically suitable for the materials being pumped
Chemically stable at pump working temperature, and
Not hazardous to health
What are the functions and requirements of Vacuum Pump Oil?
We generally think of lubrication as the main use for oil. In vacuum pumps the functions of the oil are:
Sealing
Lubrication
Cooling
Corrosion protection
Flushing contaminants
Noise reduction
Preventing contamination of vacuum pump oil.
There are several ways to prevent the oil from being contaminated, depending on the type of contamination, by using gas ballast, traps or filters.
If the amount of condensed vapor contamination is relatively low, opening the gas ballast valve will allow water vapor to be passed through the pump without condensing. The manufacturers specification usually shows the water handling capacity of a specific pump in grams/hour or ounces/ hour. If the amount of condensed vapor is above this limit some type of condenser or cold trap should be installed on the inlet side of the pump.
If the process is dusty, i.e. a solid contaminant, an inlet filter can be installed, designed to suit the type and amount of dust. Some filters have a cyclone design that causes the gas flow to circulate around the filter interior so that heavy solids drop to the bottom. The exit from that type of filter is from the top of the body where the gas flow should be cleanest. There are also filter elements available that will catch the solids, either a pleated style element for fine solids, or a wetted metal mesh element for high flow applications. Remember that filters will reduce the effective pumping speed and they also do need to be maintained regularly.
Other Brands for Vacuum Oil
For more brand of vacuum pump oil，please feel free to contact us.
