Williams Portable Around the Pump Foam Proportioning System WATP-1500

The Williams Around The Pump 1500 Portable Foam System was designed to turn any pumper into a foam producing device. This unit will proportion 3% foam solution up to 1500 GPM or up to 4500 GPM at 1%. It can work against hydrant pressure up to 50 PSI with only 150 PSI discharge pressure. This economical system is easy to use and is completely water driven; there are no pumps or parts to maintain.

Can’t get the foam to the pump? Not a problem! The WATP was designed to proportion foam from remote locations.

Features & Benefits

• Operates up to approximately 33% Pump Suction Pressure.
• (Example: Pump Discharge Pressure @150 PSI, Suction Pressure @ 50 PSI)
• Proportions Class “B” Foam up to 4500 GPM at 1%.
• Proportions Class “B” Foam up to 1500 GPM at 3%.
• Proportions Class “B” Foam up to 750 GPM at 6%.
• Positive Shut‐Off on Metering Valve.
• Requires no maintenance.
• Portable.
• Water Powered.
• Remote Proportioning Capabilities.
• (Proportions with foam several hundred feet away from pump)
• Check Valve Prevents Water from “Back Flowing” into Concentrate Source.

Standard connections for easy setup:

• 1 1/2 in. (F)NST water inlet for jet pump motive flow.
• 2 1/2 in. (M)NST rich foam solution outlet.
• 2 in. (M)NPSH foam concentrate inlet.
• 2 in. (F)NPSH foam concentrate hose.
• 2 in. (M)NPT PVC foam stinger.
• A version with a 2 in. cam-lock fitting for the hose and stinger is also available

Ordering Information 

Each includes:

• Base unit with jet pump, metering valve and metering chart.
• 2.0” clear concentrate pick-up hose.
• 2.0” valved drum stinger.

WATP Fireground Layout

*Williams Fire & Hazard Control Pressure Reducing Valve (WPRV) suggested and is sold separately to ensure constant pumper intake pressure.