Table 1. Major Components, Controls and Indicators.
Component, Control, or
Vent Fitting Assembly
Drain Fitting Assemblies
Drain Hose Assembly
Drain Ball/Gate Valve (2-inch)
Provides the means to both fill and remove water from the
tank. Allows a hose assembly to be connected to the tank.
Directs the flow of water through the hose assembly into the
tank when filling, and out of the tank when discharging.
Can be accessed by removing the dust cap. Located in two
places on top of the tank at diametrically opposite ends.
Contains a mushroom type vent cap that is calibrated to
open when the tank is subjected to an internal vapor
pressure greater than 3 inches (7.62 cm) of water. Vent
cap is connected at the top of the vent pipe. Located in
middle of the tank.
Allows the drain hose assembly to be connected directly to
the tank. A drain fitting assembly is mounted on the
underside of the tank at each end of the tank. When the
drain plug is removed, the drain hose assembly can be
Allows water to drain from the water tank. Hose assembly
is comprised of an 8-foot section of hose attached to a hand
operated ball valve. The hose is connected to the tank
drain fitting during installation.
Allows water to drain from the collapsible storage tank. The
valve is normally closed when the tank is not being drained
Allows water to flow to and from the tank assembly. The
valve is normally closed when the tank is not being filled or
water is not being discharged from the tank.
Provides attachment points used to lift, move or position the
empty water tank and the ground cloth, if equipped.
Collapsible elastomeric-coated fabric water storage tank in
20,000 and 50,000 gallon capacities. Used for storage and
containment of potable drinking water.
The ground cloth, if equipped, is spread out to protect the
bottom of the tank from abrasion and wear resulting from
contact with the ground.
The repair kit contains all items needed to perform
temporary repairs of cuts and punctures to the tank fabric.