High Pressure Diaphragm Pumps

Industrial Paint And Coating Solutions

Cobra® is an exclusive high pressure double diaphragm pump suitable for Airless and AirCoat applications up to 250 bar. Cobra® is the first high pressure pneumatic pump without packing. The lack of contact between the material and the external atmosphere (the pump is completely sealed), the absence of friction in the fluid section and the minimum shear make it perfect for any kind of material including the most critical ones such as reactive paints (UV paints, isocyanates, acrylics) or highly abrasive materials.  The pump works with extremely low pulsation and creates a uniform paint flow, achieving a perfect spray pattern and superb surface quality. With its minimized internal volumes, the pump is designed to greatly reduce solvent consumption and material waste during flushing and color-change operations.

Cobra® Applications

Cobra® 40-10 is the ideal solution for working with small quantities and frequent color changes - recommended for single-gun up to three-gun applications in the wood and furniture industry, small carpentry shops and joineries, and the general metal industry. Cobra® 40-10 is also ideal for feeding base or hardener for 2K mixing units (FlexControl and FlexControl Plus).

Cobra® 40-25 is suitable for high flow rates applications (up to 5 l/min) such as multi-gun operations or for very large nozzles.  It is also an excellent solution for feeding automatic spraying systems in wood coating lines or for heavy-duty applications in carpentry, the metal industry, and leather coating. Cobra® 40-25 is ideal for feeding base or hardener for 2K mixing units when high delivery is needed.

Cobra® 2K is the perfect solution for highly reactive 2K materials such as polyester (primer or finishing, short and long pot-life) and is ideal for applications on old-style furniture, coffins, musical instruments, and boat and yacht interiors.

WAGNER Cobra®: Innovative Technology

WAGNER Cobra® is the only high pressure pneumatic diaphragm pump on the market. The pump was specifically designed to ensure the highest reliability and the best performance.

Features & Benefits

• Smaller displacement volume and the easy-to-clean design which allows for drastic reduction in solvent consumption during flushing operations.
• Special long-life diaphragms and tungsten carbide inlet valves have high reliability and low maintenance costs.
• Very low pulsation for consistent fluid output allows for better finishing results.
• Proven WAGNER IceBreaker® air motor technology which allow for no ice problems even at the highest operating speeds.
• Integrated recycle valve for easy operation.
• All Cobra® pumps can be mounted horizontally or vertically. A variety of suction systems can be mounted: hopper, flexible suction hose, and rigid suction pipe which create a versatile operating, space saving design.

PUMP SPEED

The recommended working speed for piston pumps is 30 DS/min. In contrast, Cobra® pumps can run at 200 DS/min.  This makes it possible to dramatically reduce the fluid section volume and achieve improved performance in terms of the delivery rate:

PULSATIONS

Compared to standard piston and bellows pumps, the double diaphragm technology combined with small fluid chambers ensures far lower pulsation and a constant material flow.

APPLICATION AREAS

• Wood and furniture industry
• Carpentry shops and joineries
• Agriculture, construction and earth moving
• General metal industry
• Leather coating

PROCESSABLE MATERIALS

• Water and solvent-based paints
• Wood coatings
• Moisture-sensitive materials, isocyanates
• Shear-sensitive coatings
• UV-cure materials
• Temperature reactive materials (acrylics, for example)
• Zinc primers

Cobra Strikes vs. Piston / Bellow Pump

• Cobra Strikes Fastest
  • Cobra® is friction-free and can handle all critical materials
  • The shearing effect is minimized in the Cobra®
  • The Cobra® ensures a constant paint flow and better finishing by reducing pulsations
  • The Cobra® pumps use high-speed operation and very small fluid chambers to achieve the same fluid flow rate
  • The small fluid chamber of the Cobra® pump can be cleaned with a dramatic reduction in solvent consumption
• Piston / Bellow Pump
  • Piston pumps and bellows pumps generate a certain amount of friction heat. This limits their usage for reactive and abrasive materials
  • Piston pumps and bellows pumps produce a high shearing effect and are therefore are not recommended for shear-sensitive materials
  • Piston pumps and bellows pumps produce deep pulsations during the switch-over phase. This affects the stability of the paint flow and finishing quality
  • Piston pumps and bellows pumps require a large fluid chamber to realize high delivery rates
  • Piston pumps and bellows pumps require large volume of solvent to flush and clean

Cobra® 40-10 is the ideal solution for working with small quantities and frequent color changes - recommended for single-gun up to three-gun applications in the wood and furniture industry, small carpentry shops and joineries, and the general metal industry. Cobra® 40-10 is also ideal for feeding base or hardener for 2K mixing units (FlexControl and FlexControl Plus).

Cobra® 40-25 is suitable for high flow rates applications (up to 5 l/min) such as multi-gun operations or for very large nozzles. It is also an excellent solution for feeding automatic spraying systems in wood coating lines or for heavy-duty applications in carpentry, the metal industry, and leather coating. Cobra® 40-25 is ideal for feeding base or hardener for 2K mixing units when high delivery is needed.

Cobra® 2K is the perfect solution for mixing and for highly reactive 2K materials such as polyester (primer or finishing, short and long pot-life) and is ideal for applications on old-style furniture, coffins, musical instruments, and boat and yacht interiors. In fact, due to the packing-free and no-friction construction, Cobra® 2K solves the typical problems of the traditional 2K bellows pumps, reducing drastically the maintenance costs and solvent consumption. Cobra® 2K is available on a base frame, wall bracket or trolley, and is fully equipped with double suction hoses; recycle valves and a static mixer.

Advantages:

• Mix only what you spray: the mixture is always fresh
• Suitable for everything from small jobs to full time use
• The packing free construction does not create friction and thus reduces maintenance
• Easy to clean / Less Solvent Usage
• High pressure application: smoother surfaces to reduce the orange peel effect and sanding time
• Suitable for AirCoat and Airless: less overspray, high transfer efficiency

Expertise in Application

The WAGNER spray-gun program optimally combines economical coating with high surface quality. We offer manual and automatic guns for the Airless, AirCoat and air atomization processes, with or without electrostatic support or high speed rotary atomizers.

WAGNER - 2K Specialist

WAGNER offers a wide range of advanced paint mixing and metering systems. Besides the innovative TwinControl 2K units, the FlexControl family offers additional features such as automatic color change, recipe storage, peripheral equipment interfaces, and low and high pressure applications with a very high mixing accuracy. Further information on Cobra® and on a wide variety of accessories like air caps, nozzles and hoses can be found in our online catalog or by contacting Kirkco's application engineer.