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The Whisper-Quiet 30-Gallon Oil-Free Scroll Compressor, supplied by Luoyou Compressor, is built around scroll compression technology. Inside the unit, two intermeshing scrolls - one fixed and one rotating around it - compress air progressively, and because the process requires no lubricating oil, the air that leaves the discharge line stays free of oil contamination. The 30-gallon storage tank maintains consistent pressure and releases air on demand, supporting continuous processes that depend on clean compressed air. It suits facilities where air purity is a working requirement, including food processing, pharmaceutical manufacturing, electronics assembly, laboratories, and medical equipment. The unit is available across the LY series, with rated power from 1.5 kW to 49 kW and free air delivery from 0.13 m³/min to 5.4 m³/min, as listed in the specification table.
The core of the QuietTech 30-Gallon Oil-Free Scroll Air Compressor is its scroll compression technology, which relies on two intermeshing scroll components: one fixed and one rotating around the fixed scroll. This design eliminates the need for lubricating oil, as the scrolls’ precise engineering ensures smooth motion without oil assistance.
As the rotating scroll moves in an orbital path around the fixed scroll, the volume between the two scrolls gradually decreases. Ambient air is drawn into the outer chambers of the scrolls, and as the rotation continues, the air is progressively compressed into smaller volumes. Eventually, the compressed air is discharged from the center of the fixed scroll, delivering high-purity air without oil contamination. The low-speed rotation of the scroll components minimizes friction, heat generation, and noise, contributing to the compressor’s efficiency and quiet operation.
The scroll design requires no lubricating oil, delivering high-purity air free from oil contaminants. This suits industries with strict air quality requirements, such as food, pharmaceutical, and electronics production.
Scroll components rotate at a steady, low speed, which keeps noise and vibration low. Rated noise levels range from 55 ± 2 dB on the smaller models to 72 ± 2 dB on larger units in the specification table, allowing installation in noise-sensitive locations such as hospitals, offices, and laboratories.
The optimized LAP/GAP design and ultra-precision machining of the scroll components reduce friction loss and heat generation, which lowers energy consumption compared with conventional compressor designs.
With no lubricating oil to add or replace and a simple modular structure, the compressor has few wearing parts. Routine upkeep stays simple and infrequent, which lowers maintenance cost and failure risk over the service life.
Select models use controllers such as the MICOS-III, which provide a graphic display, real-time monitoring, and sequential start/stop control based on actual air consumption. This prevents no-load operation and limits energy waste.



| Scroll Compressor Only | ||||||||
| Model | Power (KW) | Working Pressure (Mpa) | FAD m³/min | Outlet Pipe | Noise dB | Outline Specification | Weight Drive (KG) (pc) | |
| LY-1.5VA | 1.5 | 8/10 | 0.13 | /4Ball Val | 55±2 | 730*610*880 | 200 | 1*04 |
| LY-2.2VA | 2.2 | 8/10 | 0.24 | 3/4Ball Val | 55±2 | 730*610*880 | 220 | 1*06 |
| LY-3.7VA | 3.7 | 8/10 | 0.4 | 3/%4Ball Val | 55±2 | 730*610*880 | 200 | 1*04 |
| LY-5.5VA | 5.5 | 8/10 | 0.6 | 3/Ball Val | 58±2 | 730*610*880 | 210 | 1*06 |
| LY-7.5VA | 7.5 | 8/10 | 0.8 | 1" | 60±2 | 1170*700*1080 | 380 | 2*04 |
| LY-11VA | 11 | 8/10 | 1.2 | 1" | 62±2 | 1170*700*1080 | 400 | 2*06 |
| LY-15VA | 15 | 8/10 | 1.6 | 1" | 65±2 | 1170*700*1550 | 600 | 3*06 |
| LY-16.5VA | 16.5 | 8/10 | 1.8 | 1" | 65±2 | 1170*700*1550 | 600 | 3*06 |
| LY-18.5VA | 18.5 | 8/10 | 2.0 | 1.5" | 68±2 | 1550*1170*1075 | 800 | 4*06 |
| LY-22VA | 22 | 8/10 | 2.4 | 1.5" | 68±2 | 1550*1170*1075 | 800 | 4*06 |
| LY-27.5VA | 27.5 | 8/10 | 3 | 1.5" | 70±2 | 1550*1170*1550 | 1080 | 5*06 |
| LY-30VA | 30 | 8/10 | 3.2 | 1.5" | 70±2 | 1550*1170*1550 | 1080 | 5*06 |
| LY-33VA | 33 | 8/10 | 3.6 | 1.5" | 70±2 | 1550*1170*1550 | 1200 | 6*06 |
| LY-38VA | 38 | 8/10 | 4.2 | 2.0" | 72±2 | 2320*1450*1700 | 1400 | 7*06 |
| LY-44VA | 44 | 8/10 | 4.8 | 2.0" | 72±2 | 2320*1450*1700 | 1500 | 8*06 |
| LY-49VA | 49 | 8/10 | 5.4 | 2.0" | 72±2 | 2320*1450*1700 | 1650 | 9*06 |
| Scroll Compressor+Tank (T=Tank) | ||||||||
| LY-1.5VAT | 1.5 | 8/10 | 0.13 | 3/4Ball Val | 55±2 | 730*610*880 | 200 | 1*04 |
| LY-2.2VAT | 2.2 | 8/10 | 0.24 | 3/4Ball Val | 55±2 | 730*610*880 | 220 | 1*06 |
| LY-3.7VAT | 3.7 | 8/10 | 0.4 | 3/4Ball Val | 55±2 | 730*610*880 | 200 | 1*04 |
| LY-5.5VAT | 5.5 | 8/10 | 0.6 | 3/4Ball Val | 58±2 | 730*610*880 | 210 | 1*06 |
| LY-7.5VAT | 7.5 | 8/10 | 0.8 | 1" | 60±2 | 1170*700*1080 | 380 | 2*04 |
The compressor supplies high-purity air for packaging and filling processes, helping food and beverage products stay free from oil contamination and meet hygiene standards.
In pharmaceutical manufacturing, sterile oil-free air supports drug production, drying, and packaging while helping plants comply with industry regulations.
Chips and circuit boards require clean air to avoid contamination; oil-free compressed air prevents oil particles from damaging sensitive components, supporting product reliability.
Laboratories need clean, consistent air with minimal disruption; the low-noise, high-purity output of this compressor fits research environments.
Devices such as ventilators and dental equipment require safe, clean air; the oil-free design supports reliable operation in healthcare settings.
The QuietTech 30-Gallon Oil-Free Scroll Air Compressor delivers high-purity, oil-free air that meets the strict safety requirements of medical applications. Its quiet operation and low vibration also make it suitable for healthcare environments, where patient comfort and equipment reliability are critical.
Thanks to its oil-free design and modular structure, the compressor has minimal maintenance needs. There is no need to change lubricating oil, and wearing parts are few. Routine maintenance is simple and infrequent, reducing operational costs and downtime.
Yes, its quiet operation and low vibration make it ideal for noise-sensitive environments like offices and laboratories. It operates without disrupting workspaces, while delivering the clean air required for various applications.
The advanced controller (e.g., MICOS-III) adjusts compression and start/stop cycles based on actual air consumption. This prevents the compressor from running idle, which wastes energy, and ensures that it only uses power when needed, maximizing energy efficiency.