Product Description

Maintain a quiet, productive workspace by choosing to buy Silent Oil-Injected Screw Compressor systems directly from DECHUAN. This series uses a radial cooling fan and dense acoustic insulation panels, lowering sound levels to 65 dB(A) to ensure a comfortable work environment.

Why Tolerating High Compressor Noise Is Damaging Your Shop Floor Productivity?

Traditional air compressors generate a harsh, low-frequency drone that can cause operator fatigue, increase safety risks by masking alarms, and require isolation in separate, distant outbuildings. This remote placement often results in long pipeline runs that introduce pressure drops and leak opportunities. The silent screw compressor addresses this problem by using an advanced acoustic enclosure that keeps noise levels as low as 65 dB(A).

By combining low-vibration structural mounts with a balanced radial fan assembly and thick sound-dampening insulation panels, this compressor can be installed directly on the main factory floor near your production lines, eliminating the need for long, expensive pipeline runs.

Sound Dampening Engineering & Technical Parameters

Silent Oil-Injected Screw Compressor

Our Silent Oil-Injected Screw Compressor uses specialized acoustic barriers to contain mechanical noise within the cabinet, allowing for flexible installation near work areas.

Radial Fan Technology: Delivers strong cooling airflow at lower rotational speeds, reducing aerodynamic noise.

Vibration Isolation Mounts: Isolates the motor and screw element from the chassis to eliminate structural noise.

GA Series Technical Parameters

Model	Max Working Pressure bar(e)	Max Working Pressure psi	FAD Flow l/s	FAD Flow m³/min	FAD Flow cfm	Motor Power kW	Motor Power hp	Noise Level dB(A)	Weight Standard kg	Weight Standard lbs	Weight Full-performance kg	Weight Full-performance lbs	Outlet Size
GA11	7.5	109	32.4	1.94	69.4	11	15	68	416	918	469	1035	G1*
GA11	8.5	123	29.9	1.80	64.1	11	15	68	416	918	469	1035	G1*
GA11	10.5	152	25.9	1.55	55.5	11	15	68	416	918	467	1030	G1*
GA11	13	189	22.0	1.32	47.1	11	15	68	416	918	465	1026	G1*
GA11	16	231	19.2	1.15	40.6	11	15	65	406	895	497***	1096	G1*
GA15	7.5	109	45.8	2.75	97.1	15	20	65	421	928	474	1045	G1*
GA15	8.5	123	42.0	2.52	88.9	15	20	65	421	928	474	1045	G1*
GA15	10.5	152	38.8	2.33	82.2	15	20	65	421	928	472	1041	G1*
GA15	13	189	32.6	1.95	69.0	15	20	65	421	928	470	1036	G1*
GA15	16	231	27.8	1.67	59.0	15	20	67	425	937	470	1036	G1*
GA18	7.5	109	56.5	3.39	119.6	18.5	25	67	431	950	495	1091	G1*
GA18	8.5	123	53.8	3.23	114.0	18.5	25	67	431	950	495	1091	G1*
GA18	10.5	152	49.0	2.94	103.8	18.5	25	67	431	950	493	1087	G1*
GA18	13	189	40.7	2.44	86.2	18.5	25	67	431	950	491	1082	G1*
GA18	16	231	35.5	2.13	75.2	18.5	25	67	437	963	491	1082	G1*
GA22	7.5	109	65.1	3.91	138.0	22	30	68	440	970	495	1091	G1*
GA22	8.5	123	63.5	3.81	134.6	22	30	68	440	970	495	1091	G1*
GA22	10.5	152	53.3	3.20	112.9	22	30	68	440	970	493	1087	G1*
GA22	13	189	49.0	2.94	103.8	22	30	68	440	970	491	1082	G1*
GA22	16	231	41.2	2.47	87.2	22	30	68	449	990	491	1082	G1*
GA26	7.5	109	72.9	4.37	154.4	26	35	69	500	1102	558	1230	G1*
GA26	8.5	123	68.1	4.09	144.2	26	35	69	500	1102	558	1230	G1*
GA26	10.5	152	61.5	3.69	130.3	26	35	69	500	1102	556	1226	G1*
GA26	13	189	54.7	3.28	115.9	26	35	69	500	1102	554	1221	G1*

Unit performance parameters tested in accordance with ISO 1217, Ed.3, Annex C-1996 Noise level complies with ISO 2151 / Pneurop / CagiPN8NTC2

Reference test conditions:

· Absolute inlet pressure: 1 bar

· Air inlet temperature: 20°C Pressure dew point of built-in dryer for GA 11-26: 5°C

FAD flow measured under below operating pressures:

· 7.5 bar models tested at 7 bar

· 8.5 bar models tested at 8 bar

· 10.5 bar models tested at 10 bar

· 13 bar models tested at 12.5 bar

GA11/15/18/22/26*/30 Integrated Dryer Models Data Table

Model	Max Working Pressure-Standard bar(e)	Max Working Pressure-Standard psig	Max Working Pressure-Full Performance bar(e)	Max Working Pressure-Full Performance psig	FAD Flow l/s	FAD Flow m³/min	FAD Flow cfm	Motor Power kW	Motor Power hp	Noise Level dB(A)	Weight Standard kg	Weight Full-performance kg	Outlet Size
GA 11*	7.5	109	7.3	105	37.7	2.26	79.8	11	15	68	467	507	G1*
GA 11*	8.5	123	8.3	120	35.2	2.11	74.6	11	15	68	467	507	G1*
GA 11*	10.5	152	10.3	149	32.2	1.93	68.2	11	15	68	467	507	G1*
GA 11*	13	189	12.8	185	26.0	1.56	55.1	11	15	68	467	507	G1*
GA 15*	7.5	109	7.3	105	51.6	3.10	109.3	15	20	69	478	534	G1*
GA 15*	8.5	123	8.3	120	47.7	2.86	101.0	15	20	69	478	534	G1*
GA 15*	10.5	152	10.3	149	42.8	2.57	90.7	15	20	69	478	534	G1*
GA 15*	13	189	12.8	185	35.5	2.13	75.2	15	20	69	478	534	G1*
GA 18*	7.5	109	7.3	105	62.2	3.73	131.7	18.5	25	69	480	536	G1*
GA 18*	8.5	123	8.3	120	57.9	3.47	122.6	18.5	25	69	480	536	G1*
GA 18*	10.5	152	10.3	149	53.5	3.21	113.3	18.5	25	69	480	536	G1*
GA 18*	13	189	12.8	185	44.1	2.65	93.4	18.5	25	69	480	536	G1*
GA 22*	7.5	109	7.3	105	73.5	4.41	155.7	22	30	67	539	597	G1*
GA 22*	8.5	123	8.3	120	69.4	4.16	147.0	22	30	67	539	597	G1*
GA 22*	10.5	152	10.3	149	61.5	3.69	130.3	22	30	67	539	597	G1*
GA 22*	13	189	12.8	185	54.3	3.26	115.0	22	30	67	539	597	G1*
GA 26*	7.5	109	7.3	105	85.7	5.14	181.5	26	35	68	571	629	G1*
GA 26*	8.5	123	8.3	120	82.0	4.92	173.7	26	35	68	571	629	G1*
GA 26*	10.5	152	10.3	149	76.5	4.59	162.0	26	35	68	571	629	G1*
GA 26*	13	189	12.8	185	66.4	3.98	140.6	26	35	68	571	629	G1*
GA 30	7.5	109	7.3	105	95.9	5.75	203.1	30	40	70	579	634	G1*
GA 30	8.5	123	8.3	120	91.8	5.51	194.4	30	40	70	579	634	G1*
GA 30	10.5	152	10.3	149	85.0	5.10	180.0	30	40	70	579	634	G1*
GA 30	13	189	12.8	185	76.4	4.58	161.8	30	40	70	579	634	G1*

Silent Oil-Injected Screw Compressor

Unit performance parameters tested in accordance with ISO 1217, Ed.3, Annex C-1996 Noise level complies with ISO 2151 / Pneurop / CagiPN8NTC2

Reference test conditions:

· Absolute inlet pressure: 1 bar

· Air inlet temperature: 20°C Pressure dew point of built-in dryer for GA 11*-30: 2°C ~ 3°C

FAD flow measured under below operating pressures:

· 7.5 bar models tested at 7 bar

· 8.5 bar models tested at 8 bar

· 10.5 bar models tested at 10 bar

· 13 bar models tested at 12.5 bar

Advanced Acoustic & Thermal Engineering Features

1. Balanced Anti-Vibration Base: The motor and air end are mounted on a heavy structural frame with rubber isolation pads, stopping low-frequency vibrations from traveling through the workshop floor.

2. Radial Cooling Airflow Path: The Silent Oil-Injected Screw Compressor cabinet uses a curved air inlet path lined with acoustic foam, trapping internal mechanical noise while allowing fresh air to cool the internal components.

3. Enclosed Cabinet Panels: Heavy-gauge steel cabinet panels fit tightly together with thick seals, preventing high-frequency screw clatter from escaping into the room.

Silent Oil-Injected Screw Compressor

Packaging, Logistics & Comprehensive Service Commitments

Secure Export Packaging: Encased within a moisture-proof plastic shroud, packed with desiccants, and enclosed inside a reinforced export wooden box to ensure scratch-free delivery.

DECHUAN Service Support: Backed by our standard proactive maintenance commitments, including a 10-minute phone response, 1-hour on-site technical support in our core regions, and quarterly on-site checks.

Full Factory Warranty: Every unit includes a comprehensive 12-month factory warranty covering all structural elements and mechanical sub-assemblies.

Technical Procurement FAQ

Q: How does the Silent Oil-Injected Compressor lower mechanical vibration during operation?

A: The motor and compressor elements are mounted to the main chassis using heavy-duty rubber vibration isolators. This structural separation prevents mechanical vibrations from transferring to the outer metal enclosure, eliminating rattling and reducing low-frequency structural noise.

Q: Does the acoustic insulation inside the enclosure degrade over time?

A: No. The Silent Oil-Injected Screw Compressor uses high-density, open-cell acoustic foam that is oil-resistant, moisture-resistant, and flame-retardant, ensuring long-term sound-dampening performance.

Q: Can this quiet compressor be installed against a wall to save space?

A: While it is compact, we recommend leaving at least 1 meter of clearance around the service access panels to ensure adequate cooling ventilation and easy access for routine maintenance.

Silent Oil-Injected Screw Compressor