The RUVAC WSU 501 is a high-performance vacuum system designed for industrial applications. Featuring a robust construction, it ensures reliable operation in demanding environments. Key features include an efficient motor for maximum suction power, a user-friendly interface for easy operation, and a compact design that facilitates seamless integration into your workspace. Ideal for laboratories and manufacturing facilities, the RUVAC WSU 501 provides optimal performance and durability. Absorber bypass valve. LEYBONOl LVO 100 operating fluid.