The superior pumping performance of ULVAC’s oil rotary vacuum pumps has earned them an excellent reputation among many users. These pumps are suitable for various applications of the vacuum deposition, the sputtering, and the food packing, etc.
VD series is a direct-drive oil rotary pump with high efficiency (IE3) multi-voltage motor fully developed by ULVAC. This dual stage rotary vane mechanical vacuum achieves lower ultimate pressure. Design optimization realized quiet operation and so this pump is suitable for a wide range of applications.
Recently the move to improve work environments is creating a large demand for quieter vacuum pumps. Developed to meet this demand, the VD series are oil rotary vacuum pumps with low-noise direct-coupled motors. Designed for easy maintenance, the VD series makes daily maintenance and inspection extremely simple. Series models can be used in a wide range of applications on sites ranging from research labs (where silence is indispensable) to production lines.
VS series is a single-stage oil rotary vacuum pump coupled with a direct-drive motor. ULVAC's simplified design gives this lightweight pump the features of compact size along with low vibration operation. The substantial reduction in vibration of the VS series pump can help reduce the costs associated with having to perform special foundation work in facilities where vibration can be problematic. Additionally, enhancements in both the oil circulation and cooling systems result in increased stability of pumping performance at high inlet pressures. These VS series pumps are typically used in a wide range of applications, especially those having a large number of repetitive pumping steps that cycle from atmospheric pressure, such as in the automated leak testing of parts, as well as numerous other industrial applications.
When an oil rotary pump is started at atmospheric pressure, and operated during low vacuum operation, the pump oil is exhausted along with the exhaust gas that is being pumped. This oil-laden exhaust mist, which consists of tiny oil droplets, appears as “smoke” exiting from the exhaust port of the pump. The TM and TMX series oil mist traps help to ensure a clean working environment and protect indoor equipment from contamination that would otherwise be caused by this oil mist.