SD Dry-Running Rotary Vane Compressor

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COBRA NC dry screw vacuum pumps are highly efficient for use in many industrial applications including process applications. These models represent many years of experience in dry vacuum technology and offer key design benefits.

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• COBRA NC screw vacuum pumps are high-performance and robust dry screw vacuum pumps for process technology, demanding applications with maximum flexibility and modularity for process changes. They are used wherever gases and vapors need to be pumped reliably and without contamination. Due to dry screw technology, the compression chamber is completely free from operating fluids. This design feature minimizes process contamination and maximizes uptime by reducing maintenance intervals compared to other technologies. In practice this means no environmental emissions and no cost arise for the purchase, replacement, and disposal of operating fluids. Maintenance tasks such as oil changes or filter replacement are no longer required or are reduced to a minimum.

  Reliable Pumping Speed	COBRA NC screw pumps are designed to achieve a high stable pumping speed - even at normal working pressure range of 75 to less than 1 Torr.
  Operationally Reliable	The variable-pitch screw design and free gas discharge allow for a high degree of fluid and particle compatibility. Optimum corrosion resistance is ensured by even temperature distribution. The outstanding levels of efficiency reduce the thermal demand and increate the life cycle.
  Benefits	Advanced Screw Design Efficient: low energy consumption, minimal maintenance, minimized operating costs Robust: high vapor and particle tolerance, self-draining High Performance: high pumping speed at all inlet pressures Flexible: air cooling and various sealing and coasting configuration available.
  Accessories and Spare Parts	Optimum Performance and Reliability Nitrogen control panel Gas-ballast valve for wet applications Exhaust silencer Standard motors meeting IEC or NEMA criteria, IE3 ATEX motors Vacuum booster adapters Seal gas system for harsh applications Purge gas and liquid flushing system for vacuum pump cleaning and inertization Air-cooled versions Anti-corrosive coatings Double and single mechanical seals for harsh or toxic processes Material and vacuum pump test certificates Busch vacuum pump oils and coolants

   

• Technical Data	COBRA NC 0400 B	COBRA NC 0630 C	COBRA NC 1000 B
  Nominal pumping speed	247 ACFM	371 ACFM	590 ACFM
  Ultimate pressure	0.0075 Torr	0.0075 Torr	0.0075 Torr
  Nominal motor rating	15 HP	20 HP	40 HP
  Nominal motor speed	3600 RPM	3600 RPM	3600 RPM
  Noise level(ISO 2151)	69 dB(A)	75 dB(A)	82 dB(A)
  Approximate weight	1433 Lbs.	1645 Lbs.	3050 Lbs.
  Dimensions(L x W x H)	71 1/2 x 23 5/8 x 30 11/16 inches	71 1/4 x 29 7/8 x 30 3/8 inches	92 X 35 1/8 x 42 7/8 inches
  Gas inlet(ANSI) / outlet(NPT)	3" / 3" ANSI/NPT	3" / 3" ANSI/NPT	5" / 5" ANSI/NPT

   

  Technical Data	COBRA NC 0100 B	COBRA NC 0200 B	COBRA NC 0300 B
  Pumping speed	82 ACFM	160 ACFM	225 ACFM
  Ultimate pressure	0.0075 Torr	0.0075 Torr	0.0075 Torr
  Nominal motor rating	5 HP	10 HP	15 HP
  Nominal motor speed	3600 RPM	3600 RPM	3600 RPM
  Noise level(ISO 2151)	74 dB(A)	76 dB(A)	77 dB(A)
  Approximate weight	730 Lbs.	908 Lbs.	1160 Lbs.
  Dimensions(L x W x H)	53 7/8 x 24 1/4 x 26 8/8 inches	60 3/4 x 26 x 26 5/8 inches	65 1/2 x 28 x 26 5/8  inches
  Gas inlet / outlet	1 1/2" / 1 1/4" NPT	2" / 2" NPT	2" / 2" NPT

   

  Technical Data	COBRA NC 2500 B
  Max. pumping speed	1471 ACFM
  Ultimate pressure	0.75 Torr
  Nominal motor rating	100 HP
  Nominal motor speed	3600 RPM
  Noise level(ISO 2151)	84 dB(A)
  Approximate weight	4400 Lbs.
  Dimensions(L x W x H)	94 7/16 x 64 1/2 x 54 3/8 inches
  Gas inlet / outlet	6" / 4" ANSI/NPT

   

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