Piston Compressor

A reciprocating piston compressor compresses gas through the reciprocating motion of a piston within a cylinder. Driven by an electric motor, the crank-connecting rod mechanism completes the cycles of intake, compression, and exhaust. It features a simple structure, strong adaptability, and high efficiency, making it particularly suitable for high-pressure output (up to 15–300 bar in industrial applications). Classified by cylinder arrangement into vertical, horizontal, and angle types, it is widely used in petroleum, chemical, refrigeration, and general air supply applications.

Structure Type	Z-type, V-type, D-type, M-type
Inlet Pressure	0~8 MPa
Discharge Pressure	0.1~30 MPa
Flow Rate	50~17,000 M³/h
Motor Power	7.5~3000 KW
Cooling Method	Water-cooled / Air-cooled (optional)

Why Choose Huayan Piston Compressors?

60 Years of Focus on Gas Compression Manufacturing

Since 1965, dedicated to piston compressor manufacturing, rooted in Jiangsu. Three generations of manufacturing expertise are built into every single unit.
100% Full-Load Testing Before Delivery

Every compressor undergoes a continuous 48-hour full-load operation test before leaving the factory — problems stay at the factory, not at your site.
Validated in 50+ Countries, the Choice of Global Customers

Serving industries such as oil & gas, chemical, industrial manufacturing, and specialty gas filling, covering over 50 countries worldwide.
Advanced Vibration and Noise Reduction Technology

Independently developed design effectively reduces operating noise and vibration, directly addressing the industry's biggest pain point and extending equipment life.
Internationally Authorized Certifications, Quality Recognized Globally

ISO 9001, ISO 14001, CE, ATEX, EAC — compliant with regulations in Europe, Asia, and other regions around the world.
Flexible Customization, Adaptable to Any Gas Medium

From hydrogen to nitrogen, natural gas, and specialty gases — discharge pressure from 0.1 to 30 MPa, flow rate from 50 to 17,000 m³/h.

Product Features and Advantages

The outlet pressure can reach 0.1 to 35 MPa.:

The reciprocating piston compressor features a wide operating pressure range. Depending on the gas medium, the discharge pressure can reach up to 35 MPa, accommodating diverse gases such as nitrogen (0.3–16 MPa), hydrogen (0.4–10 MPa), petrochemical process gas (0.1–25 MPa), CO₂, and CNG (25 MPa).

Large Displacement and Strong Processing Capacity:

The flow rate of a single reciprocating compressor can reach 100~50,000 Nm³/h, far exceeding the capacity of diaphragm compressors. For example, Huayan's hydrogen compressors have a flow range of 400~12,000 Nm³/h, and hydraulic piston compressors for hydrogen filling stations can achieve a design displacement of ≥1,000 Nm³/h.

High Thermal Efficiency and Energy Saving:

Reciprocating compressors utilize a direct reciprocating piston compression mechanism, achieving leading thermal efficiency among all compressor types. They deliver higher compression ratios and lower energy losses at the same power input. When paired with variable frequency drive (VFD), the displacement can be precisely matched to demand, ensuring minimum energy consumption.

High Volumetric Efficiency and Low Leakage:

Using contact-type piston ring sealing, the clearance between the piston ring and the cylinder mirror surface is extremely small (only 0.03 mm when the outer diameter is ≤250 mm). Combined with multi-stage sealing design, leakage is far lower than non-contact sealing structures, ensuring extremely high volumetric efficiency.

Mature Technology and Flexible Capacity Regulation:

Reciprocating compressor technology is highly mature with excellent controllability. There are more than six capacity regulation methods, including clearance pocket adjustment, suction valve unloader, bypass regulation, suction throttling, variable speed drive, and valve actuator control, enabling 25%~100% step regulation or 50%~100% stepless regulation to flexibly adapt to different working conditions.

Long Service Life of Wear Parts and Low Maintenance Costs:

The reciprocating piston compressor features long service life and low maintenance cost, with convenient routine maintenance. The whole machine is designed for a service life of up to 20 years, and key wear parts such as piston rods and cylinder liners have a service life of no less than 30,000 hours.

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Select Your Model

Z type

V / W type

M type

D type

Z type Piston Compressor

Piston stroke	80mm, 95mm
Piston force	10KN～25KN
Number of compression stages	1/2/3/4
Number of cylinder banks	1/2
Crankshaft speed	740 rpm, 980 rpm
Power	7.5 kW-55 kW
Drive mode	electric motor, diesel engine, natural gas engine

V / W type Piston Compressor

Piston stroke	92mm, 95mm, 105mm, 120mm
Piston force	25KN, 45KN, 65KN
Number of compression stages	1/2/3/4
Number of cylinder banks	2/3/4
Crankshaft speed	740rpm, 980rpm
Power	15KW-220KW
Drive mode	electric motor, diesel engine, natural gas engine

M type Piston Compressor

Piston stroke	92mm~315mm
Piston force	45KN~660KN
Number of compression stages	1/2/3/4
Number of cylinder banks	4
Crankshaft speed	300rpm~980rpm
Power	160KW-3000KW
Drive mode	electric motor, diesel engine, natural gas engine

D type Piston Compressor

Piston stroke	92mm~315mm
Piston force	45KN~660KN
Number of compression stages	1/2/3/4
Number of cylinder banks	2
Crankshaft speed	300 rpm ~ 980 rpm
Power	30 kW-1000 kW
Drive mode	electric motor, diesel engine, natural gas engine

Application Fields and Process Media

To ensure the normal operation and long service life of the compressor when handling different media, it is necessary to select appropriate equipment materials, designs, and maintenance plans (such as choosing specific lubricating oils) based on the specific working environment, pressure, temperature, and media characteristics (e.g., corrosiveness).

Application Areas

1.Oil Industry
Used to compress petroleum gas, feed gas, and other process media. In refineries, it boosts associated gas for delivery to downstream units. It is core equipment for oil refining and extraction, compliant with the API 618 standard.
2.Chemical Industry
Capable of compressing ammonia synthesis gas, carbon dioxide, oxygen, ethylene, propylene, and various chemical media, with a discharge pressure of 0.1~25 MPa and flow rate of 50~7,200 Nm³/h. Widely used in large-scale chemical processes such as ammonia synthesis and urea production.
3.Natural Gas Industry
Used for natural gas gathering and transportation, CNG filling stations, and natural gas satellite stations. It boosts purified natural gas to 25 MPa for storage and dispensing. Hydraulic piston models achieve an average displacement of up to 1,500 Nm³/h.
4.Industrial Applications
As the most widely used source of air power in industry, with a flow range of 100~50,000 Nm³/h and pressure range of 0.1~200 MPa. Both stationary and mobile configurations meet the dual needs of centralized plant air supply and flexible deployment at construction sites.
5.Food Industry
Utilizes oil-free lubrication technology to achieve zero oil contamination in compressed gas. Used for modified atmosphere packaging, pneumatic driving of beverage filling lines, and pneumatic conveying in grain storage, meeting the hygiene and safety requirements of the food industry.
6.Pharmaceutical Industry
Equipped with oil-free lubrication structures to fundamentally eliminate oil contamination. Used for raw material gas delivery, fermentation gas supply, pharmaceutical packaging, and pneumatic equipment in clean rooms, compliant with GMP certification requirements.
7.Hydrogen Energy Industry
Covers the entire chain from hydrogen production stations and filling mother stations to hydrogen refueling stations, offering multiple pressure levels from 22 to 90 MPa with a displacement range of 50~2,000 Nm³/h and a maximum of 900 bar. It is a core piece of equipment in hydrogen transportation infrastructure.

Working Media

1.Inert Gases
Suitable for the compression of inert gases such as Nitrogen (N2), Argon (Ar), Helium (He), Neon (Ne), and Carbon Dioxide (CO2). This type of Compressor employs appropriate sealing and material design to ensure the gas remains pure and stable during the compression process.

2.Oxidizing Gases
Suitable for the compression of oxidizing gases such as Oxygen (O2), Chlorine (Cl2), and Fluorine (F2). This type of Compressor requires special materials and strict degreasing treatment to prevent safety risks caused by oxidation reactions.

3.Flammable and Explosive Gases
Suitable for the compression of flammable and explosive gases such as Hydrogen (H2), Natural Gas (CH4), Carbon Monoxide (CO), Acetylene (C2H2), Ammonia (NH3), Liquefied Petroleum Gas (LPG), and gas mixtures. This Compressor is equipped with explosion-proof design and leakage monitoring systems to ensure safe and reliable operation.

4.Corrosive Gases
Suitable for the compression of corrosive gases such as Hydrogen Sulfide (H2S), Hydrogen Chloride (HCl), and Hydrogen Bromide (HBr). This type of Compressor uses corrosion-resistant materials and special sealing structures to effectively resist gas corrosion and extend equipment service life.

5.Olefins and Easily Liquefiable Gases
Suitable for the compression of olefins and easily liquefiable gases such as Ethylene (C2H4), Propylene (C3H6), Methane (CH4), Ethane (C2H6), and Propane (C3H8). This Compressor prevents premature liquefaction during compression through precise control of compression temperature and pressure.