A gypsum spraying machine automates the entire process from dry powder to finished wall surface. It combines dry gypsum powder with water in a controlled ratio, mixes the material continuously, pumps it through a delivery hose, and sprays it onto the wall through a nozzle under pressure. The operator simply aims the spray gun and moves it in a consistent pattern, while the machine handles mixing, pumping and material delivery. Because the gypsum spray plaster machine mixes every liter of plaster to the same water-to-powder ratio, the material consistency is uniform across the entire project, which eliminates the variations that come from hand-mixed batches. The sprayed material also bonds more effectively to the wall because it is applied under pressure, creating a stronger mechanical bond that reduces the risk of delamination and cracking during drying.
Gypsum Spraying Machine Technical Specifications:
| Product Name | YG-20 Gypsum Spraying Machine |
| Voltage | 220V/380V |
| Max Flow | 30L/MIN |
| Main Power | 5.5KW |
| Vertical Spraying | 20m |
| Horizontal spraying | 80m |
| Hopper volume | 115L |
| Max Aggregate Size | 6mm |
| Weight | 145Kg |
| Dimension(L*W*H) | 110*70*140cm |
Applications of Gypsum Spraying Machine
- Residential interior wall plastering: The gypsum spray machine handles both basecoat and finish coat plastering in apartments, houses and multi-unit residential buildings. The 20-meter vertical delivery allows a single ground-level setup to serve upper floors, and the adjustable flow rate suits both large living areas and detailed work in bathrooms and kitchens.
- Commercial building interior finishing: Offices, retail spaces, hotels and educational facilities benefit from the machine’s high output and consistent material quality across large wall areas. The electric power means no exhaust fumes or ventilation concerns in enclosed commercial spaces, and the continuous delivery helps contractors meet tight project schedules.
- Renovation and refurbishment projects: The machine re-plasters stripped walls or applies new plaster over repaired sections, matching existing thickness for seamless transitions. Its compact size suits confined renovation sites, and the dry spray process introduces less moisture into walls with existing moisture-sensitive materials.
- Prefabricated and modular building construction: The gypsum spray plaster machine finishes prefabricated wall panels after assembly, delivering consistent thickness and uniform coverage critical for modular construction. The 80-meter horizontal range serves multiple assembly stations from one position in factory settings, and the automatic mixing ensures every panel receives the same plaster formulation.
5 Features of Gypsum Spraying Machine
- Automatic continuous mixing system: The machine combines dry gypsum powder with water at a controlled ratio as material feeds into the pump, producing a consistent mixture without batch variation. The operator only adds powder and monitors the water setting, reducing physical labor and eliminating the quality differences that come from hand-mixed batches.
- Adjustable flow rate up to 30L/min: The 5.5KW motor drives a positive-displacement pump delivering up to 30 liters per minute. The operator adjusts flow from the control panel — reducing it for detailed work around windows and doors, increasing it for large open walls — making the machine versatile for both basecoat and finish coat application.
- 20m vertical and 80m horizontal delivery: The pump pushes mixed plaster to heights of 20 meters and distances of 80 meters. A single ground-level machine serves upper floors and multiple rooms without equipment movement or manual bucket carrying, significantly reducing setup time on multi-story projects.
- 115L continuous-refill hopper: The 115-liter hopper holds enough material for several minutes of continuous spraying and supports refilling while the machine runs. A top screen blocks oversized particles from entering the system, protecting the pump and nozzle from blockages. The size balances capacity against compactness for indoor use.
- 6mm maximum aggregate compatibility: The gypsum wall plaster machine handles gypsum formulations with aggregate particles up to 6mm, covering standard basecoat plasters with sand or lightweight aggregate. The pump, hose and nozzle pass 6mm particles reliably, and finer finish plasters produce even smoother spray patterns with fewer blockage risks.
Why the 6mm Aggregate Size Matters?
The maximum aggregate size determines what materials the machine can handle. The YG-20 accepts aggregate up to 6mm.
What fits: Standard gypsum plaster with sand up to 4mm. Lightweight gypsum plaster with perlite or glass microspheres. Fiber-reinforced gypsum with fibers up to 6mm length. Insulating gypsum plaster with coarse aggregates.
What does not fit: Cement mortar with sand over 6mm. Leveling mortars with large aggregate. Heavy-density materials that exceed the pump’s capacity.
A simple field test: Take a handful of the material. If the largest particle is smaller than a grain of uncooked rice (about 6mm), the gypsum spray machine can handle it. If the material feels heavy and sandy, check the aggregate size before loading.
Using the wrong material damages the pump. The rubber stator wears faster on abrasive materials. The motor overloads on dense mixes. Matching the material to the machine’s specification extends service life and prevents downtime.
6 FAQs About Gypsum Spraying Machine
A: The machine handles gypsum plaster, lightweight gypsum plaster (with perlite), fiber-reinforced gypsum, insulating gypsum plaster, and self-leveling floor compounds. It does not handle cement mortar or heavy-density materials.
A: The maximum aggregate size is 6mm. Any material with particles larger than 6mm will clog the pump or damage the stator.
A: The machine reaches 20 meters vertically and 80 meters horizontally. This covers most residential and commercial projects without repositioning.
A: The gypsum spraying machine runs on 220V or 380V power. No transformer is required. The machine accepts either voltage directly.
A: At standard plaster thickness (10- 15 mm), the machine covers approximately 200-300 square meters per 8-hour shift. Actual output depends on material consistency and operator technique.
A: Yes. The gypsum wall plaster machine uses compressed air to atomize the plaster at the nozzle. The air supply must be clean and dry to prevent clogging.
