The RUVAC WA (U) series Roots pumps from Oerlikon Leybold are all air-cooled, and the motors are flange connected. Under the four pumping speed specifications, it is divided into two forms: WAU with relief valve (to prevent high pressure overload) and WA without relief valve. The main technical parameters are:

Extraction speed: 253m3/h~2050m3/h

Maximum allowable pressure difference: 80/50mbar

Installed power: 1.1~7.5Kw

Maximum speed: 3600 rpm (6OHz)

Noise: ＜ 60/72 dB (A)

The main features of the RUVAC WA (U) series Roots pump from Oerlikon Leybold are:

1. All specifications of Roots pumps are air-cooled and do not require a circulating cooling water system.

2. Adopting IE2 energy efficiency level motor, energy-saving.

3. High processing accuracy, reasonable design, low vibration, low noise, sturdy and durable.

4. Changing from vertical flow to horizontal flow is simple and convenient.

5. The WAU series with a relief valve can be started under atmospheric conditions, simplifying the control program of the system and increasing the pumping speed of the unit from atmospheric pressure to 10 mbar.