OIL BATH ROTARY PUMPS FOR SALE
The operating principle of oil bath rotary pumps is similar to that of lubricated rotary pumps, with the difference that here the stator is immersed in lubrication oil. This way, the oil performs both classic function of lubrication and sealant for air leaks.
Included there is a ballast device, which can be activated at the operator’s choice, designed to prevent the condensation of water vapors.
The oil bath rotary pumps are able to reach considerably higher pressure values than any other type of vane pump. The lack of a filtering system at the outlet discourages their use at pressures close to atmospheric pressure. There are two major types of these pumps. The first is the single-stage model, consisting of a single rotor/stator assembly.
The second is the double stage, where two rotor/stator groups are connected in series, i.e. the discharge of the first group is connected to the suction of the second: this type achieves lower absolute pressures than single-stage pumps.
These high vacuum models are designed for the refrigeration and air conditioning industry. The single and double stage constructions allow to reach an optimal final pressure. The one-piece construction and the use of light metals give this series of oil bath rotary pumps extremely reduced overall dimensions and weight, making them suitable for confined and ventilated spaces or mobile equipment.
Reduced dimensions, low noise level and simplification of control and maintenance operations are the main features of this series. The removal and recovery system provided with by-pass, associated with the new oil recovery float valve, guarantees the absence of oil vapours at the discharge. In addition, a sealing device prevents oil from rising if the pump stops in vacuum.
Maximum reliability, absence of vibrations, low noise and easy maintenance are the main features of this series of high vacuum pumps. The motor-pump transmission entrusted to an elastic joint guarantees reliability, long life and easy maintenance.
