Pierce HUSKY 3 - 2-2.2 C FOAMC

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GENERAL

2-8 / Husky 3 Foam System

2-2.2c Foam Concentrate Pump

Figure 2-8: Foam Concentrate Pump

POM0929

The Foam Concentrate Pump assembly is a brass/steel/aluminum constructed, double-acting cylinder pump. The

hydraulic ends of the pump control the speed and direction of both cylinders. he hydraulic piston is connected to the

foam piston by a single, straight shaft. The foam end of the pump is brass construction and contains 4 cartridge type

check valves to prevent foam from flowing the wrong direction in the pump.

The foam pump also has a pressure relief valve that recirculates the foam from the discharge side to the inlet side

in the case of an obstruction or overpressure situation. The foam pump speed and operation are monitored by a

foam pump transducer located in the hydraulic end of the pump assembly.

The foam concentrate pump is self-priming and has the capability to draw foam concentrate from external supplies

such as drums or pails. The foam concentrate pump has a maximum capacity of 3 GPM with all types of foam

concentrates with a viscosity at or below 6000 cps including protein, fluoroprotein, AFFF, FFFP, or AR-AFFF.

Hydraulic Manifold Block

Assembly with built-in

Hydraulic Cylinder

Foam Cylinder