This is the core part of Two Component System. It is like a standard Airless Spray Equipment except three hydraulic cylinders driven by single common Air Motor. The Air Motor designed by VR Coatings ensures balanced tilt free operation of three material pumps resulting in reduced wear & tear. Mixing ratio is decided by capacity of the 3 cylinders. By simply exchanging any one of the cylinders, new mixing ratio can be accomplished effectively and quickly. Output per cycle up to 500 cc, pressure ratio up to 75:1 and mixing ratio ranging from 1:1 to 10:1 is consummated by this pump. Infact this pump is designed and constructed to achieve most mixing ratios with related parameters as required. These pumps can be equipped with Ø300mm or Ø350mm Air motor.
Air Motor has pneumatic sensing and changeover with only two moving parts. It has compact and robust design and easy maintenance. Pneumatic Sensing & Direction Changeover with only two moving parts gives

• Quick stroke change over & pulsation free output.

• High durability and life.

• Less maintenance / Breakdown.

• Easy for troubleshooting and repair.

• Less down time in case of breakdown.

Mixing Block is mainframe mounted. For the applications which have extremely short pot life it can be located directly where the coating is being applied. Both the components that are individually metered and delivered by Two Component Pump, are mixed in this Mixing Block incorporated with numbers of Non Return Valves. Return Line from the Mixing Block goes back to the tank in case of circulated system. VRC designed Mixing Block has following features:

• It is Equipped with four NRV''s and four pneumatic valves. Very compact and robust.

• Effective flushing of mixing block and mixed material by two separate solvent valves for base and activator. In case of diverse viscosities and single common solvent valve, solvent may channel by pushing through less viscosity component and keeping higher viscous component in mixing block as well as leaving coating of mixed fluid on the inner tube of hose. This is avoided by providing two individual solvent valves for base and activator

• Solvent (of previous flush cycle) gets wiped out by spray material in first pass. (Useful for solvent less 2K PU material)

• All valve seats & balls (including NRV) are in Tungsten Carbide.

• Easy for maintenance.

• Modular design of mixing block provides maintenance and cleaning frequency is very low and less downtimes.

• Manually operated Ball Valves can be provided instead of pneumatic valves with all above design features if desired.

This may consist of inline fluid heaters, heated supply containers, heated hoses. VRC offers high-pressure inline fluid heaters to heat each individual component to the required temperature. Each heater is available with power 3 KW max, operating pressure 450 bar and temperature up to 100°C.These heaters are compact and rigid.

Oil heated Jacketed Containers are offered by VRC to preheat the component individually as per material specification. They are available in different capacities upto 200ltr.These container has power ranging upto 12KW and temperature range up to 100°C. This is controlled and monitored by PID based Control Panel.