Specifications

TM 9-2330-384-14&P
1-15. FUEL LOADING/UNLOADING SYSTEM (Con't).
KEY
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I
NAME
FUNCTION
I
Fill Cover
Pressure/Vacuum Vent
A 10 in. (25.4 cm) hinged opening in manhole allows top loading.
Helps prevent damage to tank if fuel is bottom loaded or unloaded
with vapor vent closed. Offers a means of venting vapors created
during fuel loading and unloading.
Vacuum Vent
Helps prevent collapse of tank if fuel is unloaded with vapor vent
closed.
Overturn Rail (Roadside)
Hollow construction. Carries vapors from vapor vent hose to rear
dam vapor collection header.
Vapor Vent Hose
Connects vapor vent to roadside overturn rail.
Vapor Vent
Located on top of semitrailer in front of manhole. Vent is spring
loaded and cable operated by a control lever in cabinet. Protects
tank from damage caused by vacuum or pressure during unloading
or loading.
1-35