TM 5-6430-211-13 & P
D
DISASSEMBLY
Take into its component parts. The 4” gate valve is disassembled by
removing 16 nuts and bolts.
DISTORTION
A bending or twisting of a shape or surface.
DUST CAP
Covering or lid put onto a coupling to prevent foreign matter getting into the
tank.
E
ELECTROLYTIC
Corrosion of a metal which occurs when two different metals are in
CORROSION
contact. When steel bolts are in contact with aluminum the aluminum will
corrode unless an electrical insulator is placed between them.
F
FAN BLOWER
Device 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 so
burst it.
FLANGE
Projecting rim or disc. Quick disconnect couplings are bolted onto the tank via a
flange.
FLOW METER
Instrument 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 MATTER
Not 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
