Leybold has expanded its range of oil diffusion pumps to include the Diffvac DP and Diffvac OB series for applications including heat treatment, coating, metallurgy as well as research and development.
With their innovative design and high pumping speed and throughput, the three Diffvac DP model sizes DP 12 K, DP 20 K, DP 30 K and DP 50 K are fully geared towards energy efficiency, robustness and uninterrupted operating times. The innovative heating system in particular minimizes power consumption and enables rapid operational readiness. Leybold says the longer maintenance cycles and easy maintenance are a major plus for users. For example, the heating cartridges can be replaced by the user, partly because they are individually fused. The pumps are equipped with robust monitoring systems, safeguarding them in all conditions.
“Up to 30% energy savings can be achieved with an energy efficiency controller and a further 20% through the improved insulation of the Diffvac DP,” explained Tanvi Hulawale, product manager at Leybold. The energy efficiency controller (EEC) can be easily retrofitted by the customer and can be wired in the terminal box without any changes to the pump. “An additional extension to the process control of the Diffvac DP consists of improved monitoring options for the oil and heating temperature,” added Tanvi. Reliable thermostat sensors with an automatic switch-off device also ensure greater safety and better pump protection.
Like the DP series, Leybold’s new Diffvac OB series is also operated in conjunction with backing pumps. Water-cooled and based on the oil diffusion principle, the two Diffvac models OB 400 and OB 630 are particularly suitable for industrial high vacuum applications. Thanks to the high component quality and long operating time as well as the high pumping speed in the pressure range from 10-² to 10-³ mbar, they are suitable for special metallurgy, among other things. In these processes, for example, the deposited dust can be easily removed without having to change the oil. Another positive feature for users is that the electrical terminal box supplies the power centrally and has individual fuses to protect the heaters. As with the Diffvac DP series, the OV series can achieve operating cost reductions of up to 30% with an energy efficiency controller.
