Wall coating projects demand speed and consistency that manual methods cannot match. An airless plaster sprayer delivers both by pumping mortar at high pressure through a precision nozzle. YG Machinery offers four reliable models for different construction scales and material types. These machines eliminate the need for compressed air while maintaining smooth, even coverage. Operators can finish large wall areas in a fraction of the usual time. This efficiency translates directly into lower labor costs per square meter. The following sections explain specifications, working principles, model selection, and pricing.
Airless Plaster Sprayer Product Specifications
| Parameter | YG311 | YG318 | YG511 | YG711 |
|---|---|---|---|---|
| Capacity | 2–3 m³/h | 3 m³/h | 3–4 m³/h | 3 m³/h |
| Working pressure | 3–6 MPa | 3 MPa | Max 3 MPa | 6 MPa |
| Material ratio | Cement: Sand=1:3 | Water:Ash:Sand=0.7–1:1:3 | Water:Ash:Sand=0.7–1:1:3 | Water:Ash:Sand=0.7–1:1:3 |
| Voltage | 380V/220V | 380V | Diesel engine | 220V |
| Motor power | 4 kW | 7.5 kW | 8 HP / 12 HP | 4 kW + 4 kW mixer |
| Air supply | 2 kW pump | 0.3 m³/min | 0.3 m³/min | 0.4 m³/min |
| Spraying area | 150 m²/h | — | — | — |
| Horizontal distance | — | 60 m | 50–60 m | 60 m |
| Vertical distance | — | 40 m | 30–40 m | 40 m |
| Hopper volume | — | 80 L | 80 L | 100 L |
| Max aggregate | ≤3 mm | ≤12 mm | ≤8 mm | ≤8 mm |
| Feeding pipe | — | 32 mm | 32 mm | 32 mm |
| Total weight | — | 300 kg | 320 kg | 400 kg |
The table above shows four models with varying output and pressure levels. The YG311 handles cement-sand mixes at 2–3 m³/h with flexible voltage options. It suits small interior projects with a limited power supply. The YG318 delivers steady 3 m³/h output with a larger 80-liter hopper. This model works well for medium-scale wall coating tasks. The YG511 uses a diesel engine for sites without electricity. It provides 3–4 m³/h capacity for outdoor construction work. The YG711 offers the highest working pressure at 6 MPa with a built-in mixer unit.
Airless Plaster Sprayer Working Principle Explained
The core principle behind an airless plaster sprayer is simple yet effective. A motor-driven pump pushes mortar mixture through a narrow nozzle at high pressure. This pressure atomizes the material into a fine, even spray pattern. No compressed air is needed in the process. The result is a smooth coating layer with minimal bounce-back waste.
Material flows from the hopper into the pump chamber. The pump generates consistent pressure to maintain steady output. Workers guide the spray nozzle across the wall surface at a fixed distance. This method ensures uniform thickness across the entire area. A single operator can cover up to 150 square meters per hour. Proper nozzle selection also affects the spray width and material distribution.
Key Advantages of Airless Plaster Sprayer Models
Why should contractors switch from manual plastering to machine spraying? The answer lies in speed, consistency, and cost savings.
- Higher output: Machine spraying covers walls 5 to 8 times faster than manual methods. One operator replaces a team of three or four workers.
- Uniform coating: The high-pressure spray produces a consistent layer thickness. This eliminates patches and reduces the need for secondary leveling.
- Material savings: Airless technology minimizes bounce-back and overspray. You use more material on the wall and less on the floor.
- Lower labor cost: Fewer workers means lower daily wage expenses. The machine pays for itself within a few large projects.
- Versatile material support: These machines handle cement mortar, gypsum plaster, and lime-based mixes. Different nozzles adjust the spray pattern for various surfaces.
Cement Plaster Spray Machine: Model Selection Guide
When comparing each cement plaster spray machine model, focus on a few critical factors. First, check the material compatibility with your typical mix design. The YG311 works best with cement-sand ratios of 1:3. The other three models accept water-ash-sand combinations more flexibly.
Second, evaluate the power source for your job site conditions. Sites with stable electricity benefit from the YG318 or YG711 electric models. Remote locations without grid power need the diesel-driven YG511. Third, consider the hopper volume for your workflow pace. An 80-liter hopper requires less frequent refilling during continuous spraying. Finally, verify the maximum aggregate diameter matches your sand specifications. This prevents blockages inside the pump and feeding pipe.
Airless Plaster Sprayer Applications Across Industries
These machines serve a wide range of construction and renovation projects. Here are the primary application areas:
- Residential construction: Spray interior walls and ceilings in apartment buildings. The uniform finish reduces the need for hand troweling afterward.
- Commercial buildings: Cover large wall areas in offices, hotels, and shopping malls. High output speed meets tight project deadlines.
- Warehouse and factory walls: Apply protective mortar coatings on industrial facility surfaces. The machine reaches high areas without scaffolding relocation.
- Exterior wall insulation: Spray insulation mortar on building facades before mesh reinforcement. Consistent thickness improves thermal performance.
- Tunnel and underground work: Coat tunnel walls with waterproof mortar layers. The diesel model works well in areas without an electrical supply.
- Renovation projects: Apply new plaster layers over old surfaces during building refurbishment. Quick setup allows work in occupied buildings.
Each application benefits from the right nozzle size and pressure setting.
Understanding Spray Plaster Machine Price Factors
Several elements influence the final spray plaster machine price for each model. Motor power and pumping capacity form the primary cost drivers. The YG711 with its dual 4 kW motors costs more than the basic YG311 unit. Higher working pressure also requires stronger pump components and seals.
The power source type affects pricing as well. Diesel engines carry a premium over electric motors of similar output. However, the YG511 diesel model saves money on generators for off-grid sites. Additional features like the built-in mixer on the YG711 add to the unit cost. YG Machinery offers competitive pricing for all four models with flexible payment terms. Contact us for a detailed quote tailored to your project requirements.
Common Questions About the Airless Plaster Sprayer
Q: Can this machine handle thick mortar mixes?
Yes. Models like the YG318 accept aggregates up to 12 mm in diameter. Thicker mixes may require adjusted water ratios for optimal flow.
Q: How do I clean the machine after daily use?
Run clean water through the pump and hoses until the output runs clear. Remove the nozzle and soak it in water for ten minutes. Regular cleaning prevents material buildup inside the system.
Q: Is training required to operate this equipment?
Basic operation takes about one hour to learn properly. YG Machinery provides free video tutorials with every purchase. On-site training is available for bulk order customers.
YG Machinery: Your Airless Plaster Sprayer Partner
YG Machinery specializes in construction equipment manufacturing with years of industry experience. Each airless plaster sprayer unit undergoes rigorous quality inspection before leaving our factory. We test every pump, motor, and nozzle assembly for proper function. Our technical team provides operation training and maintenance guidance for all buyers.
We maintain a full inventory of spare parts for quick replacement delivery. Most orders ship within 7 working days after payment confirmation. Custom voltage configurations are available for specific country standards. Our after-sales team offers remote video support for troubleshooting and repairs. This comprehensive service ensures your equipment stays productive throughout its lifespan.
Rossi, a construction foreman from Italy, purchased the YG318 for residential projects. His team completes interior plastering three times faster than before. He appreciates the consistent coating quality on every wall surface.
Ochieng manages infrastructure projects in Nairobi, Kenya. He chose the YG511 diesel model for sites without reliable electricity. The machine handles daily mortar spraying without breakdowns or performance issues.
Ali runs a renovation company in Lahore, Pakistan. He uses the YG711 for commercial building interior work. The built-in mixer saves his crew significant preparation time on each project.
Ready to speed up your plastering workflow? YG Machinery offers free consultations and detailed pricing for all airless plaster sprayer models. Our engineering team can help you choose the right unit for your specific project needs. Contact us today to get started.
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