Used VARIAN VHS 250 #6124 for sale

VARIAN VHS 250 is a vacuum-based pump capable of creating a high-quality vacuum for applications requiring high ultimate vacuum (up to 0.7 mbar, 1 x 10-7 Torr) maintenance and operation. The pump is a single-stage, differenced-pressure dry diaphragm pump with an integrated gas ballast and adjustable compression that is capable of operating in a wide range of temperature and pressure regimes. VHS 250's design consists of two main components: a vacuum chamber housing the main rotor assembly and a polypropylene diaphragm which acts as a valve to control the flow of gas through the pump. The diaphragm is held in place by a magnet and is activated by an electromagnetic current. The main rotor assembly consists of several blades which are designed to move the air as it passes through the system. VARIAN VHS 250 operates by using a technique known as dynamic compression. This involves using a series of high-speed blades located in the vacuum chamber that are activated using a series of magnets. These magnets apply varying levels of pressure to the air passing through the chamber, effectively compressing and evacuating the gas. The gas is then vented through the exhaust port. VHS 250 has an adjustable inlet and outlet control valve, which allows for users to set the inlet and exhaust pressures and optimize performance. The user can also adjust the gas-ballast pressure, depending on the requirements of the application. VARIAN VHS 250 is a robust and reliable pump, capable of operating for extended periods of time and is ideal for use in industrial and scientific environments. The pump is also small and compact, making it easy to transport and store. Overall, VHS 250 is an efficient and highly precision vacuum pump, providing superior performance with an adjustable gas-ballast pressure, adjustable inlet and outlet control, and high-speed blades. The pump's design is tailored to provide effective vacuum control, while offering versatile and reliable operation.