A gypsum wall plaster machine does one thing well: it takes pre-mixed gypsum plaster and sprays it onto walls and ceilings faster than any crew with trowels could ever manage. One operator and one assistant cover 200-300 square meters per shift. A manual crew of four covers the same area in a week. That is not a marginal improvement—that is a different way of working.
The YG-20 gypsum spray plaster machine is built for exactly this kind of productivity. It runs on 220V or 380V power, delivers 30L/min flow with a 5.5KW motor, and reaches 20 meters vertically and 80 meters horizontally. The 115L hopper holds enough material for 20-30 minutes of continuous spraying. At 145kg, it moves between job sites without a trailer.
Gypsum Wall Plaster Machine 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 |
How Does a Gypsum Wall Plaster Machine Work?
The YG-20 gypsum spray machine operates on a simple principle: a screw pump moves material from the hopper to the spray nozzle. Compressed air atomizes the plaster as it leaves the nozzle, creating a fine, even spray that adheres well to walls and ceilings.
The pump. A rotating screw inside a rubber stator creates a continuous, pulseless flow. This design handles materials with aggregate up to 6mm without clogging. The pump operates at low speed, reducing wear and extending service life. The screw pump delivers consistent pressure across the full hose length—even at 80 meters horizontal, the spray pattern stays stable.
The nozzle. The operator controls the spray pattern by adjusting air pressure. A wide fan pattern covers large areas quickly. A narrow stream reaches tight corners and edges. The nozzle design prevents material buildup, reducing cleaning time between jobs. The operator controls the entire process from the gun—no second person is needed at the machine during operation.
The hose. The gypsum wall plaster machine delivers material through standard plaster hoses. The 80-meter horizontal reach covers most job sites without repositioning the machine. The 20-meter vertical reach handles multi-story buildings. The pump compensates for hose resistance, so the operator does not need to adjust settings between short and long runs.
Delivered to the Dominican Republic: One Machine, Two Orders
The Customer Background: A construction contractor in the Dominican Republic specializing in residential and commercial interior finishing was looking to expand into larger projects. The contractor had been using manual troweling methods for years and was struggling to keep up with demand.
The Challenge: The contractor was covering 30-40 square meters per day with a crew of four plasterers. On a 1,000 square meter project, that meant 25-33 days of plastering work. Labor costs were rising, and finding skilled plasterers was becoming more difficult. The contractor needed a way to increase output without adding crew members.
The Solution: YG recommended the YG-20 gypsum wall plaster machine. The contractor’s team received basic training on operation and maintenance. The machine connected to the existing compressed air system and power supply. Within the first month, the contractor was spraying 200-300 square meters per shift with one operator and one assistant—the same output that previously required four plasterers working all week.
The Second Order: In July 2026, the same contractor placed a second order for another YG-20 gypsum spray machine. The first machine had performed consistently over several months, and the contractor had expanded into larger projects that required additional capacity. The second machine allowed the contractor to run two crews simultaneously and take on projects that were previously out of reach.
Customer Feedback: “We were turning away work because we could not plaster fast enough,” the contractor said. “The first YG-20 changed that. We went from covering a room in a day to covering a floor in a day. The machine is reliable, easy to operate, and the results are consistent every time. When we needed more capacity, we ordered another one without hesitation.”
What the Numbers Actually Mean on Site?
- 30L/min flow rate. At standard plaster thickness (10- 15 mm), this translates to approximately 200-300 square meters per 8-hour shift. The operator points the gun at the wall, pulls the trigger, and material flows steadily—no pulsing, no hesitation. Real output depends on material consistency. Thicker plaster reduces flow rate; thinner material increases it. The gypsum spray plaster machine handles the range without compromising performance.
- 115L hopper. Holds enough material for 20-30 minutes of continuous spraying. Smaller hoppers (60-80L) require refilling every 10-15 minutes, interrupting the workflow and reducing productivity. The larger hopper means fewer stops, more continuous coverage, and faster job completion
- 145kg weight. Two people can lift it onto a truck. No forklift, no crane, no special transport arrangements. For contractors who move between multiple job sites in a week, this portability is a practical advantage.
- 20m vertical, 80m horizontal. The gypsum spraying machine reaches six floors up without being moved. On a typical multi-story residential or commercial project, the machine stays on the ground floor while the hose reaches the top. On a large floor plate, the machine stays in one position while the hose covers the entire area.
- 6mm aggregate size. The gypsum wall plaster machine accepts aggregate up to 6mm. Standard gypsum plaster with sand up to 4mm passes through easily. Lightweight gypsum plaster with perlite or glass microspheres flows without issues. Fiber-reinforced gypsum with fibers up to 6mm length works as long as the fibers do not exceed the opening.
