Page 109 - 2010-2022 hose manufactureing ability and guide

test pressure: see proof pressure test. U

tex: a yarn size system defined as the weight in UL: Underwriters Laboratories
grams of 1000 meters of yarn.
ultimate strength: see tensile strength.
textile: (1) the general term applied to that undercure: a less than optimal state of
which is or maybe woven, as a woven cloth or vulcanization, which may be evidenced by
yarn, (2) a fibrous material suitable for being tackiness or inferior physical properties.
spun and woven into cloth or yarn.
USCG: U.S. Coast Guard.
TFI: The Fertilizer Institute
USDA: U.S. Department of Agriculture.
thin cover: (1) a cover, the thickness of which
is less than specified; (2) a wire braid hydraulic U.S. Government agencies
hose specifically made with a thin cover to DOD- Department of Defense, DOT-
eliminate the need for buffing when attaching Department of Transportation, FDA-Food and
couplings.
Drug Administration, MSHA-Mine Safety and
thin tube: a lining the thickness of which is Health Administration, OSHA- Occupational
less than specified. Safety and Health Administration, PHA- Public
Health Administration, USCG- U.S. Coast
tight braid: (1) an unevenness in a braid Guard, USDA- U.S. Department of Agriculture.
reinforcement caused by one or more ends of
the reinforcement being applied at a greater V
tension than the remaining ends; (2) a localized viscosity: the resistance of a material to flow
necking down of the braided reinforcement under stress.
caused by a stop in the braiding operation.
void: the absence of material or an area devoid
tolerance: (1) the upper and lower limits of materials where not intended. See also:
between which a dimension must be held; (2) blister, sink.
the total range of variation, usually bilateral,
permitted for a size, position or other required volume change: a change in linear dimensions
quantity. of a specimen immersed in a liquid or exposed
to a vapor.
trapped air: air trapped during cure (which
usually causes a loose ply or cover, a surface volume swell: see swelling.
mark, depression or void.) vulcanization: an irreversible process during
tube: the innermost continuous all-rubber or which a rubber compound, through a change in
plastic element of a hose its chemical structure (e.g. cross-linking),
becomes less plastic and more resistant to
tubing: a non-reinforced, flexible, swelling by organic liquids, and which confers,
homogeneous conduit, generally of circular improves or extends elastic properties over a
cross-section.
greater range of temperature.
tubing machine: see extruder
W
twist: (1) the turns about the axis, permit of warp: (1) the lengthwise yarns in a woven
length, of a fiber, roving yarn, card, etc. Twist fabric or in a woven hose jacket, (2) the
is usually expressed as turns per inch; (2) the deviation from a straight line of a hose while
turn about the axis of a hose subjected to subjected to internal pressure.
internal pressure.
water resistant: having the ability to
withstand the deteriorating effect of water.
wavy tube: a tube or lining with an inner
surface having surface ripples formed by the
pattern of the reinforcement.

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