|
| |
TM 10-4930-250-13&P
1.9.4.3 Unisex Couplings.
All fuel delivery components are connected with unisex dry-break couplings. The use of valved unisex couplings allows any
component to be isolated and removed from the system without defueling. The D-1 and CCR nozzles are subject to damage
from fuel expansion and are fitted with non-valved unisex couplings to preclude trapping a quantity of fuel that could expand
and damage a nozzle. Non-valved unisex couplings are used also on the fuel drum valved cam-lock elbow adapters because
the elbow valve provides the necessary isolation.
Unisex couplings consist of two basic components: the coupling and the inlet. Figure 1-9 illustrates the types of inlets
provided with the three-inch valved coupling. Figure 1-10 illustrates the types of 2-inch unisex coupling-inlet combinations.
Figure 1-11 illustrates multiple unisex coupling-inlet combinations.
7
VALVED
-
3-INCH
UNISEX
7
3-INCH
3-INCH
FLANGE
HOSE
BARB
Figure 1-9. Three-Inch
Unisex Coupling-Inlet
Combinations
1-13
|
