TM 5-6430-211-13 & PDDISASSEMBLYTake into its component parts. The 4” gate valve is disassembled byremoving 16 nuts and bolts.DISTORTIONA bending or twisting of a shape or surface.DUST CAPCovering or lid put onto a coupling to prevent foreign matter getting into the tank.EELECTROLYTICCorrosion of a metal which occurs when two different metals are inCORROSIONcontact. When steel bolts are in contact with aluminum the aluminum will corrode unless an electrical insulator is placed between them.FFAN BLOWERDevice used to inflate the tank to test for leaks similar to a hair dryer but larger. It is not capable of producing a high pressure in the tank and soburst it.FLANGEProjecting rim or disc. Quick disconnect couplings are bolted onto the tank via aflange.FLOW METERInstrument to measure the quantity of liquid or gas which passes a certain point.A flow meter can be used to measure the quantity of water which is pumped into or out of the tank.FOREIGN MATTERNot belonging to or introduced from outside. The tank is to hold water suitable for drinking. Foreign matter which may contaminate the water must not be introduced into the tank.Glossary 3
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