B2B technical product support for surface preparation, finishing, painting and waterproofing
Application guide

Spray-Gun Nozzle Selection

Choose a nozzle and air setup according to coating viscosity, solids, finish and supplier recommendations.

Before choosing a product

Understand the complete application route

Choose a nozzle and air setup according to coating viscosity, solids, finish and supplier recommendations.

Site conditions matterUse this page as a selection guide. Review site conditions and current product instructions before application.

Project input for quantity guidance

Record the approximate area and planned coats, then apply the current product-specific coverage rate with allowance for texture and application loss.

Enter project details to create an estimation note.
Recommended sequence

A practical step-by-step approach

1
Check the coating technical sheet.

Confirm the correct material and process before proceeding.

2
Select a nozzle within the recommended range.

Confirm the correct material and process before proceeding.

3
Confirm compressor pressure and air-volume capacity.

Confirm the correct material and process before proceeding.

4
Set fluid, fan and air controls on a test panel.

Confirm the correct material and process before proceeding.

5
Adjust only after evaluating atomisation and pattern.

Confirm the correct material and process before proceeding.

Related SunChem Lunaris products

Products to discuss for this application

Final selection depends on the substrate, existing condition and complete system.

Build an enquiry list →
SunChem Lunaris HVLP Gravity Feed Paint Spray Gun product photograph
Spray Guns & Equipment

HVLP Gravity Feed Paint Spray Gun

A gravity-feed HVLP spray gun with independent air, fluid and fan controls for professional coating application.

Suitable for
Automotive, wood, metal and other compatible coating work
Primary use
Professional spray application
View product details →
SunChem Lunaris Paint Funnel Filter product photograph
Spray Guns & Equipment

Paint Funnel Filter

A disposable or replaceable filter accessory for straining compatible coatings before filling spray equipment.

Suitable for
Liquid coatings suitable for filtration
Primary use
Paint preparation
View product details →

Need a project-specific recommendation?

Submit the surface type, current problem, project size, city and photographs.

Talk to a Product Specialist →
Practical guidance

Spray-Gun Nozzle Selection FAQs

Is a larger nozzle always better for thicker paint?

A larger nozzle may be recommended for some higher-viscosity materials, but the coating data sheet should guide the choice.

What causes orange peel?

Viscosity, atomisation, distance, gun speed, overlap, temperature and coating flow can all contribute.

Why is my spray pattern uneven?

Check air cap cleanliness, nozzle condition, fluid delivery and fan adjustment before changing technique.