- High volumetric efficiency
- Integrated bypass valve
- Leak-tightness (> 1x10-6 mbar x l/s)
- Dry and contact-free compression
- Adaptable to all types of backing pumps
- Minimal maintenance
PANDA/PUMA
Vacuum boosters
PANDA/PUMA vacuum boosters increase the pumping speed and ultimate pressure of vacuum pumps. They can boost the performance of vacuum systems by up to a factor of ten.
In combination with backing pumps, PANDA/PUMA are perfectly suited for all applications that require high pumping speeds at a defined working pressure.
Busch vacuum boosters are available in a large number of sizes. This allows pumping speed and ultimate pressure to be tailored exactly to the process conditions.
In contrast to PUMA vacuum boosters, PANDA vacuum boosters come with a bypass valve as standard. Both PUMA/PANDA series are compatible with a variable speed drive.
Operating principle
Within the housing of PANDA/PUMA vacuum boosters, two lobes rotate synchronously. Due to the special profile of the lobes and their precise manufacturing, they do not come in contact with each other or the housing. Thus, no lubricants or operating fluids are required in the process chamber.During the rotation of the lobes, gas is transported between the lobes and the housing into the backing pump.
PANDA WZ
Benefits of the PANDA WZ series
PANDA WZ significantly increase the performance of all types of backing pumps in the medium and high vacuum range. They have been specially designed for semiconductor processes.
Thanks to a directly flange-mounted water-cooled motor, PANDA WZ vacuum boosters are leak-tight to the atmosphere. They are perfectly suited to handle aggressive or toxic gases.
Having no coupling between motor and housing, PANDA WZ are compact. They can be flanged directly onto the backing pump or at any other position in the system.
PANDA WZ vacuum boosters operate completely contact-free and without any operating fluids in the process chamber. Maintenance is therefore limited to a minimum. Additionally, PANDA WZ vacuum boosters have an exceptional volumetric efficiency and low energy consumption. All this leads to low operating costs.
PANDA vacuum boosters are equipped with a bypass valve as standard. It reliably protects the vacuum boosters against overloading or overheating and allows them to be used for high differential pressures. Additionally, PANDA WZ are compatible with a variable speed drive.
All PANDA WZ products
PANDA WV
- High volumetric efficiency
- Integrated bypass valve
- Dry and contact-free compression
- Minimal maintenance
- Adaptable to all types of backing pumps
Benefits of the PANDA WV series
PANDA WV significantly increase the performance of all types of backing pumps in the rough, medium and high vacuum range.
They are equipped with a bypass valve as standard. It reliably protects the vacuum boosters against overloading or overheating and allows them to be used for high differential pressures.
PANDA WV vacuum boosters operate completely contact-free and without any operating fluids in the process chamber. Maintenance is therefore limited to a minimum. Additionally, PANDA WV vacuum boosters have an exceptional volumetric efficiency and low energy consumption. All this leads to low operating costs.
PANDA WV can be flanged directly onto the backing pump or at any other position in the system. They are also compatible with a variable speed drive.
All PANDA WV products
PUMA WY
- Variable speed drive available
- Dry and contact-free compression
- Adaptable to all types of backing pumps
- Minimal maintenance
- High volumetric efficiency
- Leak-tightness (> 1x10-6 mbar x l/s)
- GGG40 housing for high mechanical and chemical resistance
Benefits of the PUMA WY series
PUMA WY significantly increase the performance of all types of backing pumps in the medium and high vacuum range. They have been specially designed for semiconductor processes.
Thanks to a directly flange-mounted water-cooled motor, PUMA WY vacuum boosters are leak-tight to the atmosphere. They are perfectly suited to handle aggressive or toxic gases.
PUMA WY vacuum boosters operate completely contact-free and without any operating fluids in the process chamber. Maintenance is therefore limited to a minimum. Additionally, PUMA WY vacuum boosters have an exceptional volumetric efficiency and low energy consumption. All this leads to low operating costs.
PUMA WY can be controlled using a pressure switch. The pressure switch activates the vacuum booster when it has achieved the optimum working pressure. Alternatively, PUMA WY are available in versions with variable speed drive.
Having no coupling between motor and housing, PUMA WY are compact. They can be flanged directly onto the backing pump or at any other position in the system.
All PUMA WY products
PUMA WP
- Variable speed drive available
- Dry and contact-free compression
- Adaptable to all types of backing pumps
- Minimal maintenance
- High volumetric efficiency
- GGG40 housing for high mechanical and chemical resistance
Benefits of the PUMA WP series
PUMA WP significantly increase the performance of all types of backing pumps in the rough and medium vacuum range.
PUMA WP can be controlled using a pressure switch. The pressure switch activates the vacuum booster when it has achieved the optimum working pressure. Alternatively, PUMA WP are available in versions with variable speed drive.
PUMA WP vacuum boosters operate completely contact-free and without any operating fluids in the process chamber. Maintenance is therefore limited to a minimum. Additionally, PUMA WP vacuum boosters have an exceptional volumetric efficiency and low energy consumption. All this leads to low operating costs.
PUMA WP can be flanged directly onto the backing pump or at any other position in the system.
All PUMA WP products
PUMA WG
- High differential pressures
- High performance
- Flexible
- Thermal process gas control with gas coolers
- Variable speed drive available
Benefits of the PUMA WG series
PUMA WG vacuum boosters offer high performance in the rough vacuum range. This makes them ideal for applications involving high differential pressures and gas throughputs when compressing against atmosphere, such as steel degassing or vapor recovery. By connecting two PUMA WG boosters in series, the ultimate pressure can be further reduced to 20 to 30 hPa (mbar). In combination with additional vacuum boosters, even lower pressures in the medium vacuum range are achievable.
Thanks to internal gas circulation cooling, PUMA WG vacuum boosters can compress against atmospheric pressure without the danger of thermal overload. Instead of ambient air or water, gas-cooled vacuum boosters use part of the pumped medium for thermal management.
During operation, the pumped medium heats up as it is compressed and exits through the outlet. It then flows through a heat exchanger connected to the exhaust, where it is cooled by surrounding cooling water. Heat is transferred through the plate walls of the exchanger to the cooling water, reducing the gas temperature. A portion of this cooled gas is recirculated back into the compression chamber, where it mixes with the incoming process gas and cools the internal components. This controlled circulation ensures a balanced thermal distribution even when operating at ultimate pressure.
By using an optional variable speed drive (VSD) with PUMA WG boosters, their rotational speed can be adjusted to match the required vacuum level, reducing energy consumption and improving efficiency.