| Term |
What it means |
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| Airless |
Refers to spray equipment which uses high pressure, rather than
air, to atomize
coating materials for spray-on application. |
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| Airless Sprayer |
Normally a piece of equipment containing a high pressure pump powered
by gas, electricity or gas-hydraulic for spraying liquid materials and coatings onto
a surface.
Shop Airless Sprayers |
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| Atomize |
When a liquid is broken apart into minute particles or fine spray. |
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| CleanShot |
A trademarked name of a patented pressure actuated valve made by
Graco that shuts of the paint supply to the spay tip that is on an extension pole
to keep "spitting" from happening after releasing the trigger.
Purchase CleanShot Valve |
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| Dead band |
This is the area in time between pulling the trigger on the spray
gun and the pump staring to pump again. Most mechanical pressure controls allow about
a 300 psi drop in pressure before turning the pump on. Graco's SmartControl is an
electronic pressure control that reduces this pressure drop to about 50psi. The second
generation, Smart Control 2.0, reduces this even further to a near zero dead band.
The dead-band results in a fading spray fan followed by a burst to the full,
set pressure. The dead-band is more noticeable when spraying thinner materials
and/or at lower pressures. The EPC gives a more consistent and even fan pattern
and eliminates a few moving parts which can result in less long-term maintenance
costs. |
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| Fan |
This is the spray itself, the shape of the spray. |
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| Fan Size |
The spray fan size is normally measured top-to-bottom and 12" from
the surface being sprayed. The fourth digit in a Graco spray tip part number is
usually the one that determines fan size when multiplied by 2, example; a LTX413
tip would have an 8" fan. See Also;
Tip Sizes, Tip Sizing,
Tips on Tips
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| Fine-Finish |
Refers to clear and gloss finishes such as lacquer or polyurethane
on cabinets, banisters, furniture etc.
More about Fine Finish tips |
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| Fine-Finish Tip |
A specially designed tip for better atomization at low pressures.
Graco's RAC X Fine Finish SwitchTips have a pre-orifice for finer atomization. |
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| GPM |
Acronym for Gallons Per Minute |
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| Inlet Ball |
The ball portion of the inlet valve of the fluid section of an airless
sprayer. Normally on the lower / bottom end. |
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| Inlet Tube |
The tube that goes into the material to be sprayed that leads to the
inlet side of the pump / fluid section. See Also:
Return Tube
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| OneSeal |
The one-piece seal that goes between the Graco RAC tip guard and the
tip. |
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| Orifice |
The hole in the tip that the material passes through on its way to
the surface being sprayed. The size of the orifice regulates the amount of material
that passes through thereby controlling the amount of product dispersed. |
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| Packings |
The material used to make a liquid tight seal |
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| Pole Gun |
A spray gun on an extension pole used to spray in hard to reach places.
Also used in lieu of standing on scaffolding. |
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| Pressure Control |
The device on an airless sprayer that regulates the pressure of material
output to the hose and spray gun. |
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| Pressure Roller |
Similar to a conventional paint roller but designed to attach to an
airless hose or gun and deliver, at a low pressure, a coating through the roller cover thereby eliminating
the need to dip the roller into a tray of coating.
Shop pressure rollers |
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| Pressure Switch |
See: Pressure Control |
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| Priming |
This is the act of getting the material to be sprayed into the pump
and removing air from the system in preparation to spray. |
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| Pump |
1. The entire sprayer 2. The fluid section of the sprayer
See also;
Diaphragm Pump
Piston Pump
Single
Double
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| Pump Armor |
A pump preserver by Graco which is used after thoroughly cleaning
an airless sprayer to help protect the fluid-section from rusting / deteriorating
while it is not in use.
Purchase Pump Armor |
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| RAC (IV, 5, X) |
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| Return Tube |
The smaller tube on a airless paint sprayer that returns material
to the container during the priming of the pump. |
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| Spray Fan |
The pattern of spray created by the airless sprayer and tip.
Usually long and narrow in shape with a new, average sized tip. The fan may become
an oblong oval or oval after tip wear and even a circle after extreme wear.
See fan size.
More about airless sprayer tip sizing. |
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| Spray Tip |
The final piece of the spray equipment that the coating material passes through
and normally causing atomization which creates a spray from the liquid. Different
tip orifices mixed with various pressures atomize the material in numerous ways
creating a wide range application scenarios.
More about sprayer tip sizes |
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| Throat Seal Liquid |
Liquid compound that is placed in a small cup that surrounds the top
of the pump rod to keep the packings wet and lubricated and also keeps overspray,
that may come in contact with the rod, from sticking to it and causing damage to the
packings.
Buy Throat Seal Liquid |
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| Tip Extension |
A tubular extension that attaches to the sprayer gun in place of the
tip guard. The tip guard then attaches to the end of the extension. Available in many
lengths and used to paint (average height) ceilings without a ladder, spraying decks
without bending over, under eves etc.. Being away from the tip also reduces the
amount of paint you get in your face and on yourself!
Shop Tip Extensions |
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| Tips |
Avoid poison oak at all times! Don't eat yellow snow.
;-) See: Spray Tip
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| Tip Guard |
The piece attached to the spray gun around the tip to help prevent
direct contact with the tip thereby preventing injection injuries.
See Also: Airless Safety
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| TSL |
See: Throat Seal Liquid |
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| Viscosity |
A measurement of the resistance of a liquid to deform and/or break
/ shear apart under stress. Most people think of this as thickness or thinness.
There are many ways to measure viscosity, The Zahn Cup is
probably the most recognized device and method as well as accurate. |
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| Whip Hose |
A short, usually smaller diameter section of high-pressure airless
hose that goes between the spray gun and the main hose to provide more flexibility
and control and also reducing hand fatigue.
Shop Whip Hoses |
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| Zahn Cup |
Device used to measure viscosity of a liquid. Widely used in the
paint industry to keep coatings consistent between batches being manufactured as
well as for measuring materials that are being thinned for various reasons. |
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