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Basic Airless Sprayers Facts
What is an airless sprayer - airless sprayers FAQ
Advantages of airless sprayers
Different types of airless sprayers
Main components of an airless sprayer
Understanding Airless Sprayer Reversible Tips
Airless sprayer accessories and how to use them
How airless sprayers are rated
Choosing the right airless sprayer
Use of Airless Sprayers
How to operate an airless sprayer
Safety when using airless sprayers
Airless sprayer spray applications
Cleaning out airless sprayers
Maintenance of airless sprayers
Maintenance of diaphragm airless sprayers
Maintenance of piston airless sprayers
Maintenance of pneumatic air driven airless sprayers
Storage & transport of airless sprayers
Storage of  diaphragm airless sprayers
Storage of piston airless sprayers
Storage of pneumatic air driven airless sprayers

We sell hot & cold Spitwater high pressure water blasters & gerni pressure cleaners. Best prices in Australia with free delivery.

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We also hire Airless Sprayers, air compressors & spray guns, check out our complete range of Airless Sprayers for hire.

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Not sure which Airless Sprayer is right for you? Our experienced staff are more than willing to discuss every aspect of Airless Sprayers to ensure that you purchase the correct Airless Sprayer or Airless Sprayer system.

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We service all brands of Airless Sprayers such as Atomex Airless Sprayers, Titan Airless Sprayers, SpeefloAirless Sprayers , Graco Airless Sprayers, WagnerAirless Sprayers, AirlesscoAirless Sprayers, Binks Airless Sprayers, Tavier, DeVilbiss & Iwata. Let our staff professionally service your Airless Sprayer and show you ways to save money.

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We stock a full range of Pilot Single Phase 240 Volt Air Compressors & Pilot Three Phase 415 Volt Air Compressors. We can deliver, install & fit air piping systems to your new Pilot Air Compressor.

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Need parts for your Airless Sprayer, we stock thousands of parts to suit most Airless Sprayers, we also have parts listings for most brands of Airless Sprayer.

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Useful Airless Sprayer Links

We stock the full range of Star Spray Guns at the lowest prices in Australia.

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Internal Pipe Spraying Systems from Atomex. Spray Internal Pipes with ease using your existing Airless Sprayer.

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We stock the full range of Wagner Airless Sprayer Reversible Trade Airless Spray Tips and ASM Flat Airless Sprayer Tips. All sizes are kept in stock.

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Please note, prices listed may change at any time without notice. We strive to keep pricing as accurate as possible but we recommend that you contact our office to confirm pricing listed on this site prior to purchase.

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Airless Sprayers Resource Centre

 Everything you need to know about airless sprayers013


Basic Airless Sprayer Facts - Different types of airless sprayers?

Airless sprayers are mainly defined by three main categories: 

1)     Diaphragm Airless Sprayers

Diaphragm airless sprayers use a hydraulic piston to draw hydraulic fluid from the sump and then compress the hydraulic fluid under a plastic diaphragm. The diaphragm pulses up and down causing the suction valve above the diaphragm to open and close which creates enough suction to draw paint product through the suction hose. Once the paint has passed through the suction valve it enters the outlet valve which usually contains a ball and seat or check valve. This allows the paint to exit the outlet valve but does not allow pressure in the hose to push back through the outlet valve.

Diaphragm airless sprayers are controlled by a pressure control valve which regulates the rate of which the hydraulic fluid is released from the piston block back into the oil sump.

Diaphragm airless spray pumps can be driven by AC Electric motors and petrol/gasoline motors with a simple eccentric bearing on the end of the crankshaft, the bearing pushes the hydraulic piston up and down compressing hydraulic fluid under the diaphragm.

Diaphragm airless pumps are more common in countries that use 220/240v power such as Ireland, Germany, Japan, China and Australia to name a few. In countries where the power grid only supplies 110v, diaphragm airless sprayers have only been popular in low capacity machines.

Diaphragm airless sprayers are a simple mechanical type of airless sprayer that has no electronics such as computer boards and sensors. In terms of use they will deliver paint out of the spray tip in exactly the same fashion as a piston airless sprayer.

 2)    Piston Airless Sprayers

Piston airless sprayers use a double acting pump in order to draw the paint from a container, this double action allows the pump to draw and transfer paint at the same time by using an inlet valve (foot valve) at the bottom of the pump and an outlet valve in the piston rod.

Once the airless pump is running the fluid is transferred in a continues flow through a small hose usually to a high pressure filter fixed to either the pump and motor or frame of the airless sprayer, this filter traps any small particles of debris or rubbish in the paint that could potentially block the airless spray tip.

The pressure of the airless sprayer is regulated by an electronic sensor that tells the motor when stop and start according to either the pressure selected by the operator or the maximum pressure setting default of the computer. Piston airless sprayers these days have complex computer boards that not only tell the machine when to stop but they can also adjust the speed of the motor depending on the size spray tip selected by the operator.

Electronic Piston airless sprayers are driven by DC Motors, although these motors are light and produce high torque they require more components than a diaphragm machines such as computer boards, pressure sensors and electronic pressure control. Piston machines are very popular in the USA because the DC Motors used can produce more power on a lower power grid such as 110v.

3)    Pneumatic or Air Driven Airless Sprayers

Pneumatic Piston airless sprayers use a double acting pump in the same manner as electronic piston airless sprayers but the drive unit is an air driven motor. Air driven motors are a simple reciprocating motor that works on basic resistance of the air pressure in the motor versus the pressure in the fluid pump.

Pneumatic airless sprayers are usually classed by the ratio of the air pressure fed into the pump air motor which determines the fluid pressure that flows out of the pump. To give an example of how this ratio is applied to the size of the pump, see below:

30:1 Ratio Pneumatic Airless Sprayer

Fluid Pressure 30psi for every 1psi of air pressure fed into the air motor. If the air motor inlet pressure was regulated to 50psi, the fluid pressure in the pump would be 1500psi (50psi x 30psi = 1500psi)

Pneumatic airless sprayers are used mainly for industrial type coatings were possible electrical hazards exist such as in steel manufacturing or applications were electrical supply is limited or not available. Pneumatic airless sprayers are also useful for thicker industrial coatings that require higher atomization pressure at the spray tip. Electric piston machines do not exceed 3300psi but pneumatic airless sprayers can spray up to 8000psi.


Basic Airless Sprayer Facts Related Pages

What is an airless sprayer?

Advantages of airless sprayers Different types of airless sprayers Main components of an airless sprayer Understanding Airless Spray Tips Airless Sprayer Accessories

ATOMEX HSP-10 Airless Sprayer Package - $399.00

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Graco Truecoat Cordless Airless Sprayer - $549.00

ATOMEX GM-60E Airless Sprayer Package - $3999.00

ATOMEX XM-30 Pneumatic Airless Sprayer Package - $2915.00

Graco Ultramax II 695 Airless Sprayer - $4845.00

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