Description
The W77 Pressure Spray Gun is a light-weight, professional-grade spray gun designed for precision application of a wide range of coatings, particularly one-part water base adhesives that require a little larger needle/nozzle assembly due to higher viscosties. It is part of the W-series family of spray guns known for consisten atomization, efficiency and durability.
Typical features & controls
- Fan-size adjustment – changes horizontal/vertical spray width.
- Fluid flow adjustment – sets how much material passes through the nozzle.
- Airflow/atomization control – adjustable at the gun or via regulator at the compressor.
- Interchangeable nozzles/needles – to match material viscosity (fine finishes to primers/adhesives).
Typical setup & operating tips
- Use the correct nozzle/needle size for the material; start with manufacturer recommendations.
- Adjust fan and fluid controls incrementally to find the cleanest atomization.
Maintenance
- Remove and clean the nozzle, needle, and air cap regularly to prevent clogging and poor spray.
- Inspect seals and O-rings and replace if leaking.
- Lightly lubricate the needle packings and trigger pivot points per manufacturer guidance.




