ATEX certified, gas temperatures < 100°C
high vapor and condensate tolerance, anti-corrosion coating on internal components
high pumping speed at all inlet pressures
low energy consumption, minimal maintenance, minimized operating costs
Busch COBRA VR dry screw vacuum pumps have been specifically designed for the stage I recovery of petrol and other hydrocarbon vapors in the petrochemicals industry. The design of the COBRA VR series is based on the long experience and close involvement of Busch in this sector.
The COBRA VR series is a range of highperformance dry screw vacuum pumps for use with corrosive chemicals and in harsh industrial environments. Safety and reliability are the most important features of these vacuum pumps. Their robust design ensures a life cycle of more than 20 years with minimal maintenance requirements. Today, they are in operation throughout the world in a wide range of climate conditions, particularly in the petrochemicals industry.
COBRA VR vacuum pumps are available in four different sizes, with pumping speeds from 400 to 1530 ACFM at 60 Hz. The range of sizes allows these vacuum pumps to be matched precisely to the process, resulting in effective and efficient hydrocarbon vapor recovery whilst maintaining the highest standards of environmental compatibility and cost-effectiveness.
COBRA VR dry screw vacuum pumps feature dry compression, a specially developed screw profile, and unimpeded gas discharge. The result is a high degree of vapor and particle tolerance. Their design guarantees an even heat distribution over the whole pump stage, reducing thermal stress and increasing service life. The screws are manufactured from a single-piece casting avoiding any gaps, making the ingress of process fluids or particles impossible, and thereby preventing corrosion. The mechanical seals are highly resistant to chemicals, further increasing the reliability of COBRA VR dry screw vacuum pumps.
Optimized rotor design and pump configuration ensure low gas temperatures within the compression chamber in line with ATEX standards. In addition, COBRA VR screw vacuum pumps are equipped with a cooling system designed specifically for the extraction of petrol vapor to compensate for any induced external or internal temperature fluctuation.