Marine Air Compressors – Reliable Air Source for Vessel Power and Control Systems

On board a vessel, compressed air is often called the “fourth power source” – it starts the main engine, powers pneumatic controls, cleans decks, and drives air tools. A reliable, stable and efficient marine air compressor system directly impacts vessel safety and operational efficiency.

DEYUAN MARINE supplys various types of Air Compressors . Today we introduce both piston type and screw type technologies, providing one-stop compressed air solutions for bulk carriers, tankers, container vessels, tugboats, workboats and offshore platforms.

Why Marine Air Compressors Matter

Marine compressed air systems perform multiple critical tasks:

Application	Description
Main Engine Starting	Large marine diesel engines require high-pressure air (2.5-3.0 MPa) to start
Auxiliary Engine Starting	Generator diesel engines also rely on compressed air
Instrument Control	Automation systems and pneumatic valves need stable air supply
Deck Operations	Pneumatic cleaning, purging, and air tools
Pneumatic Control	Clutch control, brake systems, remote valve actuation
Other Uses	Fresh water generator ejectors, incinerator combustion air, pneumatic pumps

A reliable air compressor system means the vessel can “start anytime and operate safely” under all conditions.

Deyuan Marine Air Compressor Product Series 

Deyuan Marine offers two mainstream technology routes:

1.Piston Type Marine Air Compressor

1.1 Technical Features:

●Multi-stage compression design for high pressure output (up to 3.0 MPa)

●Simple structure, easy maintenance, low spare parts cost

●Suitable for intermittent duty – widely used for starting air systems

1.2 Typical Specifications:

Parameter	Range
Capacity	0.2 – 3.0 m³/min
Working Pressure	1.0 – 3.0 MPa
Power	5.5 – 37 kW
Cooling	Air-cooled / Water-cooled
Stages	2-stage / 3-stage
Power Supply	AC 380V / 440V 50/60Hz

Typical Vessels: Bulk carriers, tankers, container vessels, tugboats, fishing vessels

2.Screw Type Marine Air Compressor

2.1 Technical Features:

●Strong continuous air supply capacity for long-running duty

●Smooth operation, low noise and vibration

●Long maintenance intervals, high energy efficiency

●Available with VFD control – automatically adjusts output based on demand

2.2 Typical Specifications:

Parameter	Range
Capacity	1.0 – 10.0 m³/min
Working Pressure	1.0 – 1.5 MPa
Power	11 – 90 kW
Cooling	Air-cooled / Water-cooled
Control	VFD / Load-unload
Power Supply	AC 380V / 440V 50/60Hz

Typical Vessels: Large container vessels, workboats, offshore platforms, LNG/LPG carriers

Selection Guide: How to Choose?

Factor	Piston Type	Screw Type
Duty cycle	Intermittent, high pressure	Continuous, medium/low pressure
Capacity	Small to medium (<3 m³/min)	Medium to high (>1 m³/min)
Working pressure	High (≤3.0 MPa)	Medium (≤1.5 MPa)
Maintenance	More frequent, cheaper parts	Longer intervals, higher part cost
Initial cost	Lower	Higher
Operating cost	Higher	Lower (more efficient)
Typical use	Starting air systems	Instrument air, continuous supply