Tank
The generic name for any bulk air source container.
Tank Cover
A neoprene slip-on cover used for camouflage and to protect the tank from minor damage and abrasions caused by routine handling.
Tapering
This refers to the inner diameter of the barrel which decreases
towards the muzzle end of their paintmarker. The idea is that the larger
bore near the chamber allows the paintball to expand when the gas
initially hits it, and then tapers to make a better seal and prevent blow by.
The lack of many tapered bore barrels may indicate how well this actually
works.
Telescopic Sight
A sight that provides "cross hairs" to aid the shooter in aiming. The
scope also provides magnification and can be used as expedient binoculars.
Thermal Lens
The thermal lens is designed to prevent fogging on the inside of the lens. This lens is actually TWO lenses which have a "gasket" of foam sandwiched between them. The inner lense is usually coated with an anti-fog compound.

The lens on the right is a thermal lens (note the black line close to the edges of the lens, this is the "gasket" described above) and the lens on the right is a normal single-pane.
Thermal Valve
The original on-off valve. Thermal valves are no longer in popular
use, but can be readily identified because the on off valve looks like a big
garden faucet one would attached a water hose to. Tanks with thermo
valves are usually mounted California style, and require special couplings
to attach high pressure hoses.
Thread Saver
A hard plastic or metal cap which screws onto the valve of a tank to prevent the valve threads from becoming damaged.
Tilt Feed
Another name for stock feed. It was used before the emergence of
stock class because paintmarkers, at the time, came in either direct feed
or tilt feed. For more information see the Stock Class article in Durty Dan's Paintball Information Services.
Typical tilt feeds
Tippmann Pin Valve
Another form of pin valve, patented by Tippmann Pneumatics, which is
stronger, less likely to leak and more dependable than a Schrader core
valve.
Tourney
The popular abbreviation for tournament play and tournaments.
Tourney-ball
Tournament play.
Tourney Cap
A collar the screws onto the velocity adjuster of an Automag that
prevents the adjustment of velocity without tools. Invented in England,
they quickly found their way to North America. Also once called a UK
Tourney Cap
Trigger
The part of the marker that is depressed to fire the marker.
Trigger Guard
As the name implies, it is a frame or bracket (separate or as part of the grip frame) that protects the trigger against accidental discharge.
Trigger Shoe
A bolt on device that increases the surface area of the trigger and
provide more comfort. Most marker's triggers are made of stamped metal
are relatively thin, the trigger shoe makes up for this uncomfortable
short-coming.

(L)Double trigger shoe (R)Standard trigger shoe with allen wrench amd mounting screws.
Twelve Gram
A disposable CO2 canister used to power a marker. They were the
original power source for paintmarkers (originally designed for airguns),
and fell out of favour as constant air became popular.
TWiB
Tournament Wanna Be, pronounced "twibb". It is a term coined by a
paintball writer, Rob "Tyger" Rubin It is used to describe a recreational
player who has all the equipment and look of a tournament player, but
either lacks the skill, or lacks a professional team to play on.
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All of the articles in the "virtual book" Durty Dan's Paintball Information Services are free to use for webpages, school projects, reference and to promote paintball to players and the non-playing public. Credit for the source of the information should be included in the bibliography or references page.
© Durty Dan Enterprises 2000. All rights reserved. All works contained herein are under copyright of the author Durty Dan. While the Terms of Use are broad they do not include the right to republish this work in any publication (hardcopy or electronic) for the purposes of personal financial gain.