If distinguishing whether a liquid electrostatic spray gun is good or not

Spray uniformity and coating quality

Spray nozzle atomization accuracy: Circular nozzles (concentrated atomization) and fan-shaped nozzles (large coverage area) need to support quick replacement and adapt to different workpieces (such as complex corners or large-area planes).

Coating performance: After spraying with a high-quality spray gun, there should be no sagging, orange peel, or pinholes, and the thickness error should be ≤ 10 μ m (as required by the national standard GB/T13452.2). ‌25
Case HDA-1020 manual electrostatic spray gun reduces paint return by extending the gun body design, and improves atomization fineness by 30%.
Core component materials and processes
High voltage generator
The output voltage needs to be stable between 20-80KV
Gun nozzle and needle assembly
Material: tungsten steel or ceramic gun needles (corrosion-resistant and wear-resistant), stainless steel nozzles (with a lifespan of>5000 hours) are standard.
Concentricity: Needle nozzle gap ≤ 0.01mm, poor quality spray guns may cause rough atomization particles due to large tolerances. ‌
Gun body design and lightweight design
High strength composite material gun body (weight<500g, such as HDA manual gun)+ergonomic handle, greatly reducing operational fatigue
Security protection mechanism
Static constant current protection: automatic power-off in case of overload (such as the buzzer alarm of HM-09)

Brand and Service Guarantee

Brand technology accumulation
International brands: Graco (high voltage isolation technology), Wagner (precision atomization control);
Chinese brand: HDA Electrostatic spray gun  (with built-in high-voltage design)
After sales and cost control

High quality spray guns have a failure rate of less than 1% per year, and provide a 1-year warranty for core components (such as HDA-1020 modular parts replacement design)