ID HOP4500 HOPPER PNEUMATIC SPRAY GUN MACHINE [AIR TOOL] - 30256
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Professional Hopper Spray Gun Built for High-Volume, High-Precision Coating
The ID HOP4500 Hopper Pneumatic Spray Gun is a professional-grade gravity-feed air spray gun engineered for high-volume coating applications. Featuring a 4500ml large-capacity aluminum hopper, a CNC-machined die-cast aluminum body, and a versatile set of 4mm, 6mm, and 8mm stainless/brass nozzles, this pneumatic spray gun machine delivers consistent atomization, precise pattern control, and fatigue-free operation across demanding job sites and workshops.
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- Massive 4500ml Gravity-Feed Hopper: The extra-large aluminum hopper holds up to 4500ml of material, dramatically reducing refill interruptions during large-scale jobs such as exterior rendering, stucco application, or industrial coating runs. The integrated handle on the hopper provides a secure two-handed grip for stability and precise directional control when working overhead or across wide surfaces.
- Three Interchangeable Nozzle Sizes for Any Viscosity: Supplied with 4mm, 6mm, and 8mm stainless steel and brass nozzles, this spray gun adapts to a wide range of coating materials — from thin lacquers and primers to thick plasters, mortars, and textured finishes. Swapping nozzles is quick and tool-free, allowing professionals to transition between materials without downtime.
- Precision Air Control with Adjustable Ball Valve and Regulator Knob: The built-in adjustable ball valve and regulator knob give the operator independent control over air volume and spray pattern width. Operating at 50 PSI (3.5 Bar) with an average air consumption of 3 CFM (84.95 L/min), the gun delivers a consistent, finely atomized spray that minimizes overspray and material waste.
- Ergonomic Full-Length Swing Trigger for Extended Use: The full-length easy-pull swing trigger distributes finger pressure evenly across the entire trigger surface, significantly reducing hand fatigue during prolonged spraying sessions. Combined with the gun's compact design and lightweight 1.12 kg net weight, single-hand operation is comfortable and controlled even after hours of continuous use.
- CNC-Machined Die-Cast Aluminum Body for Durability and Alignment: The gun body is precision-machined from die-cast aluminum alloy with plastic components where weight savings matter most. CNC machining ensures tight tolerances throughout the air and fluid passages, resulting in consistent atomization quality, minimal air leakage, and a long service life even under heavy daily use in construction and industrial environments.
- Compact, Single-Hand Operable Design: Despite its large hopper capacity, the HOP4500 maintains a compact, ergonomically balanced form factor that allows single-hand operation. The weight distribution between the gun body and hopper is optimized so the tool does not tip or strain the wrist, making it suitable for both right- and left-handed operators working in confined or elevated spaces.
This machine is CE-certified (Machine Test), confirming it meets European safety and performance standards for professional pneumatic equipment. Each unit ships complete with the spray gun machine, a comprehensive guide book, three nozzles (4mm, 6mm, and 8mm), and a durable aluminum cup — everything needed to begin spraying straight out of the box.
General Purchase & Comparison Queries
What makes the ID HOP4500 different from a standard HVLP spray gun?
Unlike a standard HVLP (High Volume Low Pressure) spray gun designed for thin paints and fine finishing, the ID HOP4500 is a hopper-style pneumatic spray gun built for high-viscosity, high-volume materials such as plaster, stucco, mortar, and textured coatings. Its 4500ml gravity-feed hopper and interchangeable 4mm, 6mm, and 8mm nozzles allow it to handle materials that would clog a conventional HVLP gun. It is the preferred choice for construction, rendering, and industrial coating applications rather than automotive or furniture finishing.
What air compressor do I need to run the HOP4500?
The HOP4500 operates at 50 PSI (3.5 Bar) with an average air consumption of 3 CFM (84.95 L/min). A compressor with a minimum output of 4–5 CFM at 50 PSI is recommended to ensure a continuous, uninterrupted spray. For sustained professional use, a compressor with a tank capacity of 50 litres or more will prevent pressure drops during extended spraying sessions. The air inlet is 1/4 inch (BSP/NPT), compatible with standard pneumatic fittings.
Is the HOP4500 suitable for both professional and DIY use?
Yes. While the HOP4500 is engineered to professional heavy-duty standards — with its CE-certified build, CNC-machined aluminum body, and industrial nozzle set — its ergonomic single-hand design, lightweight 1.12 kg body, and intuitive adjustable controls make it equally accessible for serious DIY users tackling large home renovation projects such as exterior rendering, fence painting, or garage floor coating. The included guide book helps new users get set up quickly.
Product-Specific and Usage Queries
Which nozzle size should I use for different materials?
The HOP4500 includes three nozzle sizes to match material viscosity: the 4mm nozzle is ideal for thinner coatings such as primers, sealers, and diluted paints; the 6mm nozzle suits medium-viscosity materials like latex paint, adhesives, and light plasters; and the 8mm nozzle is designed for thick, high-viscosity materials such as heavy stucco, mortar, and textured render. Always test spray on a scrap surface first and adjust the regulator knob and ball valve to fine-tune the spray pattern and flow rate for your specific material.
How do I adjust the spray pattern on the HOP4500?
The HOP4500 features an adjustable ball valve to control the volume of air entering the gun and a regulator knob to fine-tune the spray pattern width and shape. Turning the regulator knob clockwise narrows the pattern for detail work, while turning it counter-clockwise widens it for broad surface coverage. The full-length swing trigger also provides variable flow control — a light pull delivers a reduced flow for edges and corners, while a full pull opens the fluid passage for maximum output on open surfaces.
How do I clean the HOP4500 after use?
After each use, empty any remaining material from the 4500ml aluminum hopper and rinse it with the appropriate solvent for your coating (water for water-based materials, mineral spirits or thinner for solvent-based coatings). Remove and individually clean each nozzle — the stainless steel and brass construction of the nozzles makes them resistant to corrosion and easy to flush. Run clean solvent through the gun by triggering it until the spray runs clear. Never leave material sitting in the hopper or gun body, as dried coatings can block the fluid passages and damage the precision-machined internals.
Problem/Solution-Oriented Queries
The spray pattern is uneven or sputtering — what should I check?
An uneven or sputtering spray pattern is most commonly caused by one of three issues: insufficient air pressure (ensure your compressor is delivering at least 50 PSI / 3.5 Bar), a partially blocked nozzle (remove and clean the nozzle thoroughly), or material that is too thick for the selected nozzle size (switch to the 8mm nozzle or dilute the material slightly). Also check that the ball valve is fully open and the air inlet connection is secure with no leaks. If the problem persists, inspect the fluid needle and seat inside the gun body for wear or debris.
Material is leaking from the nozzle when the trigger is released — how do I fix this?
Dripping or leaking from the nozzle after releasing the trigger typically indicates a worn or damaged fluid needle tip or a loose nozzle seat. First, ensure the nozzle is tightened securely — the stainless/brass nozzles should be hand-tight plus a quarter turn. If the leak continues, inspect the fluid needle for wear and replace it if the tip is deformed. Also check that the material has not dried inside the needle seat, which can prevent a full seal. Regular cleaning after every use is the most effective way to prevent this issue.
The hopper is draining too quickly and I am running out of material mid-job — what can I do?
The 4500ml hopper capacity is designed to minimize refill frequency, but on very large surfaces the gun's high output can deplete material faster than expected. To extend working time, reduce the ball valve opening slightly to lower the flow rate without sacrificing atomization quality. You can also pre-mix a larger batch of material in a separate container and use a ladle or pour spout to refill the hopper quickly without stopping work. For continuous production environments, consider working with a second pre-filled hopper that can be swapped in within seconds.
Machine (1 Pcs), Guide Book (1 Pcs), 4 mm Nozzle (1 Pcs), 6mm Nozzle (1 Pcs), 8mm Nozzle (1 Pcs), Aluminium Cup (1 Pcs)