Robwen Foam Proportioner

The Robwen Model 500P Foam Proportioner is a fully self-contained positive pressure, automatic foam concentrate to water proportioner. The Robwen Model 500P requires no outside electrical source for power as it operates totally from the pressure generated by the flow of water through the connected hose line.

The system is capable of proportioning Class A and AFFF foams.

The unit operates on the high water horsepower available from the third stages of series/parallel pumps. This power, in the form of a jet, hydraulically forces static water back to the fire appliance, from distances of 30 to 90 metres.

The jet, at pressures up to 3,200 kPa (450 psi) and flow of 5.5 l/s (75 gpm) passes through 4 pick up nozzle stages of steadily increasing cross sectional area. The composite flow of drive water and driven water leaving the discharge venturi, is 32 l/s (420 gpm) at 180 kPa (25 psi). Thus the high pressure input flow, passing through the multiple stages has picked up 5 times its own value. This enables pick up from remote static water at flow rates and distances never before possible.

In addition to being featured in the hose line, the Model 500P can be used as a semi-permanent fixture by remoting the differential pressure valve directly to a discharge. In this manner an existing skid or pumper can be quickly converted to foam capable.

Features:

• Self Contained
• Positive Pressure
• No outside power required
• Precise adjustable proportioning
• Requires no leveling
• Built in flush valve

This is only a sample of the range from Robwen. Please contact us for pricing and information on other Robwen products not shown here. Further information can also be obtained from the manufacturer's own website by clicking HERE