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Technical

Glossary of Terms
Tumble Polish Surface A uniform fnish applied by vibratory equipment to stainless steel, varying from matte grey to
bright, depending on media used. This process may cause work hardening on the surfaces of
stainless steel.

Turbulent Flow Irregular fow that is characterized by tiny whirlpool regions. The velocity of this fuid is defnitely not
constant at every point.

Velocity Head (h ) The energy of a liquid as a result of its motion at some velocity V. It is the equivalent head in feet
v
through which the water would have to fall to acquire the same velocity, or in other words, the head
necessary to accelerate the water. Velocity head can be calculated from the following formula:
V 2
h = 2g
v

Where g = 32.3 ft/second
V = liquid velocity in feet per second
The velocity head is usually insignifcant and can be ignored in most high head systems. However, it
can be a large factor and must be considered in low head systems

WOG Water, Oil, Gas. Pressure rating for valves handling these products. This does not include steam.

Welding Join two (or more) pieces of material by applying heat to produce a localized union through fusion across the
interface. For sanitary fttings, a ferrule is attached to the ends of a tube ftting by TIG welding without the addition of
fller metal.

Work (Strain) Hardening An increase in hardness and strength caused by plastic deformation at temperatures below
the annealing ranges.

Trademarks

Tygon is a registered trademark of Saint-Gobain Corporation.
®
Santoprene is a trademark of Exxon Mobil Chemical
™
Tuf-Steel is a registered trademark of RubberFab Technologies Group
®
Torque-rite is a trademark of RubberFab Technologies Group
™
Z 304 800.789.1718 Dixon Sanitary 2014