Specifications

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proportion rate is accurate. One (1) check valve shall be installed in the plumbing to prevent foam
from contaminating the water pump.
Low Level, Foam Tank
The control head shall display a warning message when the foam tank in use is below a quarter tank.
Hydraulic Drive System
The foam concentrate pump shall be powered by a hydraulic drive system, which is automatically
activated, whenever the vehicle water pump is engaged. A system that drives the foam pump via an
electric motor shall not be acceptable. A large parasitic electric load used to power the foam pump can
cause an overload of the chassis electrical system.
Hydraulic oil cooler shall be provided to automatically prevent overheating of the hydraulic oil, which is
detrimental to system components. The oil/water cooler shall be designed to allow continuous system
operation without allowing hydraulic oil temperature to exceed the oil specifications.
The hydraulic oil reservoir shall be of four (4) gallons minimum capacity and shall also be of sufficient
size to minimize foaming and be located to facilitate checking oil level or adding oil without spillage or
the need to remove access panels.
Foam Concentrate Pump
The foam concentrate pump shall be of positive displacement, self-priming; linear actuated design,
driven by the hydraulic motor. The pump shall be constructed of brass body; chrome plated stainless
steel shaft, with a stainless steel piston. In order to increase longevity of the pump, no aluminum shall
be present in its construction.
A relief system shall be provided which is designed to protect the drive system components and
prevent over pressuring the foam concentrate pump.
The foam concentrate pump shall have minimum capacity for 12 gpm with all types of foam
concentrates with a viscosity at or below 6000 cps including protein, fluoroprotein, AFFF, FFFP, or AR-
AFFF. The system shall deliver only the amount of foam concentrate flow required, without
recirculating foam back to the storage tank. Recirculating foam concentrate back to the storage tank
can cause agitation and premature foaming of the concentrate, which can result in system failure. The
foam concentrate pump shall be self-priming and have the ability to draw foam concentrate from
external supplies such as drums or pails.
External Foam Concentrate Connection
An external foam pick-up shall be provided to enable use of a foam agent that is not stored on the
vehicle. The external foam pick-up shall be designed to allow continued operation after the on-board
foam tank is empty. The external foam pick-up shall be designed to allow use with training foam or
colored water for training purposes.
Panel Mounted Strainer/External Pick-Up Connection
A bronze body strainer/connector unit shall be provided. The unit shall be mounted to the pump
panel. The external foam pick-up shall be one (1) 1.00" male connection with chrome-plated cap
integrated to a 2.00" strainer cleanout cap. A check valve shall be installed in the pick-up portion of
the cleanout cap. A basket style stainless steel screen shall be installed in the body of the
strainer/connector unit. Removal of the 2.00" cleanout cap shall be all that is required to gain access
to and remove the stainless steel basket screen. The strainer/connector unit shall be ahead of the
foam concentrate pump inlet port to insure that all agent reaching the foam pump has been strained.
Pick-Up Hose
A 1.00" flexible hose with an end for insertion into foam containers shall be provided. The hose shall
be supplied with a 1.00" female swivel NST thread swivel connector. The hose shall be shipped loose.