The Leybold RUVAC WAU 251 is a high-performance Roots blower designed to enhance vacuum systems by providing increased pumping speeds at low pressures. It serves as a booster stage for forevacuum pumps, effectively extending their operating pressure range.

Key Features:

• Pumping Speed: Offers a nominal pumping speed of 253 m³/h (149 CFM) at 50 Hz, with an ultimate total pressure of less than 8 × 10⁻⁴ mbar.
• Motor Configuration: Equipped with a 1.1 kW (1.5 hp) three-phase motor operating at 50 Hz (3,000 min⁻¹) and 60 Hz (3,600 min⁻¹).
• Integrated Features: Includes a pressure differential valve that allows simultaneous starting with the roughing pump. In the event of an excessively high-pressure difference between the flanges, the valve opens to protect the system.
• Durable Construction: Designed with radial shaft sealing rings made of FPM (FKM) fluoropolymer for longer service intervals and reliable operation.

Applications:

The RUVAC WAU 251 is widely used in applications requiring high pumping speeds and reliable performance, including:

• Heat treatment processes
• Metallurgical applications
• Large area coating
• Architectural glass coating
• Monocrystal pulling
• Semiconductor manufacturing
• Solar cell production