Spray Painting Equipment & Techniques
Airless spray pumps, HVLP systems, spray tip selection, cross-spray patterns, spray distance, and spray booth operation.
- Explain the operation of airless spray pumps and their components
- Describe HVLP spray systems and their advantages over conventional spray
- Select appropriate spray tips based on material and application
- Demonstrate proper spray distance and cross-spray pattern technique
- Identify spray booth requirements and safety procedures
Lección 1
Airless Spray Pumps & Components
How Airless Spray Works
Airless spray systems use high hydraulic pressure (1,500-3,500 PSI) to atomize paint without compressed air. A pump draws paint directly from the can or bucket and forces it through a small orifice in the spray tip, where the pressure drop atomizes the material into a fine spray pattern.
Key components of an airless spray system:
- Pump - piston or diaphragm type, driven by electric motor or gas engine
- Inlet strainer - filters large debris from paint before it enters the pump
- High-pressure hose - rated for the system's maximum pressure
- Spray gun - houses the tip, trigger, and safety guard
- Spray tip - determines pattern width and material flow rate
- Tip filter - catches particles that could clog the tip
Advantages of Airless Spray
Airless systems are the most productive method for large-area painting:
- Covers large areas 4-10 times faster than brush and roller
- Handles heavy-bodied materials (primers, elastomerics, texture coats)
- Produces a thick, even film in a single pass
- No compressed air supply required
Injection Hazard
Airless spray guns operate at pressures high enough to inject paint through skin. Never point the gun at any body part. Never attempt to clear a clogged tip with your finger. This is a medical emergency requiring immediate hospital treatment.
Airless spray systems use high hydraulic pressure to atomize paint without compressed air. They are the most productive method for large areas but carry serious injection injury risks that require strict safety protocols.