Previous I 1 I 2 I 3 I 4 I
5 I 6 I 7 I 8 I 9 I 10 I Next
L I M I N I O I P I Q I R I S I Sta I T I U I V I Vol I W I Z
FLOW
RATE: The quantity
of water flowing
past a specific point in a specified
time (e.g. the number of litres
flowing through the filter in 1
hour).
GATE
VALVE: The type that spins "lefty-loosey;
righty-tighty."
GAS VALVE: An electronic
valve in the pool heater that directs
gas flow from the meter to the pilot
and the burner tray.
GASKET: A
gasket is a mechanical seal that fills
the space between two objects, generally
to prevent leakage between the two
objects while under compression. Gaskets
are commonly produced by cutting from
sheet materials, such as gasket paper,
rubber, silicone, metal, or a plastic
polymer.
GROUND-FAULT
CIRCUIT-INTERRUPTER: A GFCI
device protects a circuit from branching
off by de-energizing the path of electricity
very quickly when it senses current
loss. An important safety device around
water (the pool?).
GROUT: a
construction material used to embed
rebars in masonry walls, connect sections
of pre-cast concrete, fill voids, and
seal joints (like those between tiles).
Grout is generally composed of a mixture
of water, cement, sand and sometimes
color tint which is applied as a thick
liquid and hardens over time, much
like mortar.
GUNITE: A
dry mixture of cement and sand mixed with water
at the "gun"; hence the name. A gunite
operator "shoots" the pool's rough
shape, while finishers trowel after.
HALOGEN: A
member of the family of elements fluorine,
bromine, chlorine and iodine.
HARD
WATER:
That water which is high in calcium hardness
and other salts which, as such, resists soap
being lathered.
HAZMAT: A hazardous
material, a term used almost exclusively in the United
States, is any solid, liquid, or gas that can harm people,
other living organisms, property, or the environment. Hazmats
may be radioactive, flammable, explosive, toxic, corrosive,
biohazardous, an oxidizer, a pathogen, an allergen, or
may have other characteristics that render it hazardous
in specific circumstances.
HEATER: A
device used to heat the water. It may be
electric, fuel operated or solar powered
heat.
HEAT
EXCHANGER: A set of 8 or 10
ribbed copper tubes that absorb the heat
produced below it and transfer it to
the water cycling through its tubes.
HEAT
PUMP: The antithesis of the
air conditioner, the heat pump's cooling
coil removes heat from the air while
the condenser coil transfers it to water
cycling through it.
HOT
TUB: Usually considered a circular,
wooden vessel filled with heated and
circulated water.
HP: Horsepower
(hp) is the name of several non-metric
units of power. The most occurring conversion
of horsepower to watt goes 1 horsepower
= 745.7 watts.
HYDROXIDES: the
most common name for the diatomic anion
OH−, consisting of oxygen
and hydrogen atoms, usually derived from
the dissociation of a base. It is one of
the simplest diatomic ions known.
HYPOCHLORITE: A
family of chlorine compounds such as Calcium
Hypochlorite and Lithium Hypochlorite,
both granular, and the liquid Sodium Hypochlorite.
When these compounds contact water, they
release Hypochlorous Acid, the active sanitizing
agent.
HYDROSTATIC
PRESSURE: A force involving built
up ground water which creates upward pressure
beneath the pool shell.
HYDROSTATIC RELIEF VALVE: Fitting(s)
installed in the floor of the pool designed
to manually or automatically release hydrostatic
pressure beneath the pool by allowing ground
water into the pool.
IMPELLER: The
rotating vanes of a centrifugal pump; its
action creates the flow of water. The impeller
is shaft driven by an electric motor.
INFLUENT: The water coming into and up to the impeller
from the suction lines. These pipes are under vacuum pressure.
ION: An
atom, or group of atoms that possess
an electrical charge.
IONIZER: An ionizer is
a device mounted on your return line,
and through which water flowing will
receive charged metal ions. Manufacturers
may use a copper anode and/or silver.
Copper is an algaecide and algaestat,
while silver is known for its properties
as a bactericide. This electric, limited
technology has been replaced by the Vision
System.
IRON: Usually
introduced into the water from iron plumbing
or from well water, Ferric Iron can stain surfaces,
while Ferrous Iron will turn your water
a clear green color. |
