JP-5 AFLOAT FLIGHT DECK SYSTEMS AND
Working the flight deck of an aircraft carrier is
one of the most exciting and dangerous jobs you can
have. Additionally, the ABF works with highly
flammable fuels. Though the below decks system is
more complex, the ABF working on the flight deck
must be equally knowledgeable in the flight deck
system, its components, and correct operating
This chapter will identify the components used
for flight and hangar deck operations and explain the
correct operating procedures. As with below decks,
the arrangement of the flight deck system will vary
from ship to ship. The information in this chapter is
based on typical arrangements.
JP-5 FLIGHT DECK
LEARNING OBJECTIVES: Identify the com-
ponents that make up the JP-5 flight and
hangar deck fueling system. Describe their
function and principles of operation.
The flight and hangar deck fueling system is
built around the Cla-Val fueling unit. The number
and location of these units depend on the individual
ship. Typically, each refueling station contains three
or four hose reels, each having its own Cla-Val.
In this section, we will identify and describe the
components in the flight and hangar deck JP-5 sys-
CLA-VAL FUEL/DEFUEL VALVE
The CLA-VAL fueling unit (fig. 5-1) is the core of
the JP-5 fueling station. It is a three-port, two-way,
fuel/defuel valve, of modified globe valve design that
is intended for use as an integral part of the JP-5
dispensing system for shipboard use. This valve per-
forms four distinct functions:
1. It functions as a pressure-reducing valve to
maintain a constant discharge pressure not to exceed
2. It functions as a solenoid-operated emergency
3. It functions as a pressure-relief valve when
discharge pressure rises above a predetermined
4. It functions as a defueling valve to evacuate
the piping and hose beyond the valve discharge.
Figure 5-1.Cla-Val fuel/defuel valve assembly.