OIL ROTARY VACUUM PUMP VD / VDN SERIES

• The high-efficiency multi-voltage motor (IE3) is fully developed by ULVAC. It is the only motor capable of covering the wide voltage range of 200–240 V / 380–460 V. Compared with similar motors, its power consumption is extremely low.
• The forced oil circulation system keeps the pump body temperature below 40 °C.
• Even near atmospheric pressure, the pumping speed remains stable, making it suitable for repeated and continuous operation between atmosphere and vacuum.
• The vacuum pressure can reach 0.67 Pa (measured with a Pirani gauge). This value is guaranteed — unlike some other brands where the actual measured value greatly differs from the catalog specification.
• The pump features an ultra-long service life, proven in practice: large brands such as Panasonic, Daikin, Aqua, Honda, Toyota, and Vinfast use this series of pumps in their production lines.
• Its simple structure makes maintenance easy.
• Various options are available for special applications.
  There are three types available: Type A, Type B, and Type H, with additional options possible depending on specific applications.
• For certain special uses, such as pumping highly corrosive substances (e.g., motorcycle brake fluid), the B series is recommended. This series has been adopted in brake fluid filling machines by major brands such as Honda, Yamaha, Toyota, and Vinfast.
• This series is also an ideal choice for customers using vacuum pumps to handle potentially explosive gases (such as R-32). This gas is recommended for air conditioners and refrigerators because it does not damage the ozone layer like previous refrigerants. For these applications, ULVAC manufactures special explosion-proof motors.

Real Case: An ULVAC vacuum pump manufactured in 2011 has been operating for over ten years under harsh conditions. With regular maintenance, its vacuum pressure still remains at 0.67 Pa — as good as a brand-new pump.