Proposal Number PSDF #P09-0004
shall deliver the percentage of rated discharge at pressures indicated below:
100 percent of rated capacity at 150 pounds net pressure
70 percent of rated capacity at 200 pounds net pressure
50 percent of rated capacity at 250 pounds net pressure
100 percent of rated capacity at 165 pounds net pressure
The entire pump shall be assembled and tested at the pump manufacturer's factory. The pump shall be driven
by a driveline from the truck transmission. The engine shall provide sufficient horsepower and RPM to
enable pump to meet and exceed its rated performance.
PUMP COOLING LINE
A 3/8" cooling line shall be installed to recirculate water from the pump back through the pump transfer case,
to cool the pump during prolonged pumping operations. The cooling line shall be controlled at the operator's
position with a Class 1 valve.
PRIMING PUMP
The priming pump shall be a positive displacement vane type, oil-less, electrically driven, and conform to
standards outlined in NFPA 1901. One priming control shall both start the priming motor and open the
priming valve.
PNEUMATIC PUMP SHIFT
The pump shift shall be air operated and shall incorporate an air double action piston to shift from road to
pump and back. A manual or electric operated pump shift mechanism is not acceptable. The pump shift
switch shall be mounted in the cab and identified as "AIR PUMP SHIFT" and include instructions
permanently inscribed on the pump shift switch plate. The in-cab operating valve uses a spring loaded
locking collar to prevent it from accidentally being moved.
The pump shift control assembly shall incorporate an indicating light system, which will notify the operator
when the shift has been completed to PUMP and when the chassis transmission is in correct pumping gear.
The switch that activates the lights must be mounted on the pump transmission and positioned so that the
pump shift arm activates the switch only when the shift arm has completed its full travel into PUMP position.
An additional indicator light shall be provided adjacent to the throttle control at the pump operator's panel to
indicate a completion of the pump shift.
MECHANICAL SEAL
The fire pump shall be provided with a mechanical pump seal. One (1) only required on the suction, inboard,
side of the pump. The mechanical seal shall be two inches in diameter and shall be spring loaded,
maintenance free and self-adjusting. Mechanical seal construction shall be a carbon sealing ring, stainless
steel coil spring, Viton rubber boot, and a tungsten carbide seat with Teflon backup seal.
ANODE SYSTEM
To reduce the effect of galvanic action the pump shall be equipped with two zinc (2) anodes. One anode is to
be installed on the inlet [suction] side of the system and one anode is to be installed on the pressure [outlet]
