WATP 500V High Head Foam System

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Now you can have the proven reliability of a Williams Around The Pump Foam System, combined with the flexibility of a Class “A” and Class ”B” Proportioner in one convenient, easy to use package. No need to fumble with confusing change over valves, because one valve allows you to select the foam source and set the foam concentrate percentage. This system features the ability to infinitely adjust, or “tweak” the foam concentration for Class “A” (1%) or Class “B” (3%) solutions to a maximum of 500 GPM (1892 Lpm).

Features & Benefits

  • Operates against 33% Pump Inlet Pressure (Example: 150 PSI Discharge Pressure w/50 PSI on Water Pump Inlet)
  • Proportions Class “A” Foam up to 500 GPM at 1%
  • Proportions Class “A” Foam up to 1000 GPM at .5%
  • Proportions Class “B” Foam up to 500 GPM at 3%
  • Positive Shutoff on Metering Valve
  • Balanced Ball Design is easy to operate
  • Requires no maintenance
  • Ergonomic grip handle is easy to use
  • Flush port is built into Metering Valve
  • Simplicity of operation
  • Available as manual actuated or air actuated
Metering Selection Chart for WATP-500 "A" (Flows in GPM)
FOAMMETERING VALVE POSITION
%IIIIIIIVVVI
0.25240380500100015002000
0.51201902505007501000
0.7580127167333500667
16095125250375500
Metering Selection Chart for WATP-500 "B" (Flows in GPM)
FOAMMETERING VALVE POSITION
%IIIIIIIVVVI
118028537575011251500
290142.5187.5375562.5750
36095125250375500
44571.2593.75187.5281.25375
5365775150225300
63047.562.5125187.5250

Ordering Information

Part NumberDescription
11679WATP-500V-A Foam System for single tank Class A foam, air actuated
11680WATP-500V-B Foam System for single tank Class B foam, air actuated
11681WATP-500V-A/B Foam System for dual tank Class A and B foams, air actuated
11682WATP-500V-A Foam System for single tank Class A foam, manual actuated
11683WATP-500V-B Foam System for single tank Class B foam, manual actuated
11684WATP-500V-A/B Foam System for dual tank Class A and B foams, manual actuated

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