Industry-Leading Dual Stage Oil-Sealed Rotary Vane Vacuum Pumps

Yes, most of our oil-sealed rotary vane vacuum pumps are designed to operate efficiently across a wide voltage range from 220V to 440V, accommodating various power supply conditions without compromising performance or safety. This feature ensures reliability and flexibility for diverse industrial applications and geographical locations.

For instance, one EVS 950 can replace three rotary piston pumps, and two EVS 1800 can substitute for five water ring pumps, saving energy and space even in smaller facilities.

The gas ballast function introduces a small amount of air into the pump during the compression phase to prevent condensation of vapors within the pump oil. This is crucial for applications involving moisture or solvent vapors, as it helps maintain the pump's efficiency, protects the oil's quality, and extends the pump's lifespan.

Our oil screw vacuum pumps are designed with top-tier motors with VSD technology (Variable Speed Drive) for maximum energy savings. You may save up to 50% on energy costs compared to alternative mechanical vacuum pumps with fixed speeds.

Our standard oil-sealed rotary vane vacuum pumps are not designed for handling highly corrosive gases, as market demand for such specialized pumps is currently not our focus. However, for applications involving explosive gases, we offer models equipped with ATEX-certified motors to ensure safe operation in potentially hazardous environments. For environments with mild corrosive gases, we recommend a compromise solution that involves more frequent oil changes to mitigate the corrosive effects on the pump's internal components, maintaining performance and extending service life.

The oil mist filter for oil-sealed rotary vane vacuum pumps serves a dual purpose: it captures oil mist expelled during operation, preventing environmental contamination and workplace exposure, and it recycles the captured oil back to the pump. This recycling mechanism is a significant feature, as it conserves oil by reintegrating it into the pump's operation, ensuring efficient use of resources and reducing the need for frequent oil top-ups.

The oil in oil-sealed rotary vane vacuum pumps should generally be changed every 3 months. However, this can vary based on the pump's usage intensity, the type of processed gases, and operating environment. Regularly checking the oil's condition for any signs of contamination or degradation can help tailor the change frequency to your specific needs.

We offer one versatile standard version that can be tailored to different working conditions by simply adjusting parameters and switching oils. For instance, in vapoThe oil in oil-sealed rotary vane vacuum pumps should generally be changed every 3 months. However, this can vary based on the pump's usage intensity, the type of processed gases, and operating environment. Regularly checking the oil's condition for any signs of contamination or degradation can help tailor the change frequency to your specific needs.r-rich environments like brick making, switching to full synthetic oil from standard mineral oil is effective and incurs minimal additional cost.

We prioritize adapting our standard model to your specific needs without extra charges.

Viscosity is a critical characteristic of vacuum oil, indicating its thickness or resistance to flow. For our vacuum oils, the viscosity varies to cater to different operational needs. The RVP-2, 4, 6, 9 series has a viscosity of 68, which means these oils are relatively thinner and can flow more easily, ideal for applications that require efficient lubrication without excessive drag. In contrast, the RVP-14, 18, 25 series has a viscosity of 100, which is thicker, providing a stronger lubricating film for vacuum pumps operating under more demanding conditions or higher loads.

In instances where our original vacuum oils are not readily accessible, there are reliable alternatives. For our oils with a viscosity of 68, Leybold LVO-130 or Edwards Ultragrade 19 can serve as suitable substitutes. For the oils with a viscosity of 100, alternatives include Leybold LVO-108 or Edwards Ultragrade 20.