4ZW-84/30 Oxygen and Nitrogen Booster Compressor

Four-column ZW-type reciprocating compressor for oxygen and nitrogen service in large-scale cryogenic air separation plants. Rated flow: 84 m³/min. Outlet pressure: 3.0 MPa (30 bar). Gas service: O₂ / N₂. Supplied against process data sheet. API 618 compliant. Motor power, weight and dimensions available on enquiry.

Air Separation Plant Compressor · O₂ / N₂ Service

4ZW-84/30

Oxygen and Nitrogen Booster

84 m³/min  ·  3.0 MPa (30 bar)  ·  4-column ZW

4ZW-84/30 large-scale oxygen nitrogen booster compressor four-column ZW-type air separation

Four-column ZW-type reciprocating compressor for oxygen and nitrogen service in large-scale cryogenic air separation plants. Supplied against process data sheet. API 618 compliant. Confirmed parameters from factory documentation — full specification on enquiry.

Confirmed Parameters
Flow Rate 84 m³/min
Outlet Pressure 3.0 MPa30 bar
Gas Service O₂ / N₂
Frame 4-column ZW
Standard API 618

Confirmed Technical Parameters

The following parameters are confirmed from factory product documentation. Motor power, weight, overall dimensions and compression stages are determined by process conditions and provided on enquiry — we do not publish estimated values.

4ZW-84/30 · Confirmed Data
Model
4ZW-84/30
Gas Service
O₂ / N₂(oxygen or nitrogen)
Flow Rate
84 m³/min
Outlet Pressure
3.0 MPa(30 bar)
Frame Layout
4-column ZW-type reciprocating
Application
Cryogenic air separation plant
Design Standard
API 618 & Chinese national standards
Available on Enquiry (Process-Dependent)
Motor power (kW) Weight (t) Overall dimensions Compression stages Voltage Cooling configuration

What the 4ZW-84/30 Is

4ZW identifies a four-column ZW-type reciprocating compressor frame — the ZW platform scaled to a four-column configuration for large-capacity service. 84 is the rated flow in m³/min. 30 is the outlet pressure in bar (3.0 MPa).

The machine is specified for both oxygen and nitrogen service. Material selection, sealing specification and surface treatment of gas-contact components are compatible with either gas — the intended gas is confirmed at order placement.

Unlike standard industrial oxygen booster compressors selected from a catalogue, the 4ZW-84/30 is supplied against the process data sheet issued by the ASU licensor or engineering contractor. Motor configuration, cooling system design, control interface and documentation package are all determined by that process data.

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Model Family

4ZW-84/30 vs 4MW-93/35

Both are confirmed from factory documentation. Two distinct machines on different frame platforms — frame selection is determined by the ASU process data sheet.

This Model
4ZW-84/30
Current Page
Frame4-column ZW
Flow rate84 m³/min
Outlet pressure3.0 MPa (30 bar)
Gas serviceO₂ / N₂
Also Available
4MW-93/35
View →
Frame4-column MW
Flow rate93 m³/min
Outlet pressure3.5 MPa (35 bar)
Gas serviceO₂ / N₂

4ZW and 4MW are different frame platforms and are not interchangeable. If your data sheet specifies parameters only, contact us for frame guidance.

What We Need — and What We Return

The 4ZW-84/30 is supplied against process conditions. Send us your ASU compressor data sheet from the process licensor or engineering contractor.

What to Send Us
1
Gas composition & purity
Gas type (O₂ or N₂), purity specification, permissible impurities, moisture content at compressor inlet
2
Pressure & temperature
Inlet pressure (MPa abs), inlet temperature (°C), outlet pressure (MPa), max allowable outlet temperature — at normal, max and min conditions
3
Flow rate
Normal, maximum and minimum flow at inlet conditions (m³/min or Nm³/h). State whether turndown control is required
4
Site & utilities
Power supply voltage and frequency, cooling water conditions, site altitude, ambient temperature range, explosion-proof requirements, certifications needed, target delivery date
What We Return
Motor selection and power rating
General arrangement drawing and dimensions
Weight estimate and foundation loading data
Cooling water and utility requirements
Indicative pricing and delivery schedule
Documentation scope (IOM, P&ID, material certs, SIL)

Send your process data sheet

We return a full technical proposal within one business day. No data sheet yet? Send your known process parameters and we will advise what additional information is needed.

Contact Engineering Team [email protected]

40 Years of Air Separation Compressor Engineering

Jiangxi Gas Compressor Co., Ltd. has been dedicated to cryogenic distillation air separation, PSA and VPSA compressor systems since the 1980s, supplying domestic and international air separation plant manufacturers, engineering contractors and industrial gas companies.

Products are designed to API 618 and applicable Chinese national standards. ISO 9001 certified. Deputy Chairman unit of the China Compressor Industry Association.

API 618
Design Standard
ISO 9001
Quality Management
CE Available
On Request
National Class II
Enterprise Rating
Ever Power compressor assembly workshop
Ever Power quality inspection workshop High-pressure test bench performance verification

Common Questions

What does the model designation 4ZW-84/30 mean?+
"4ZW" identifies a four-column ZW-type reciprocating compressor frame. "84" is the rated flow rate in m³/min. "30" is the outlet pressure in bar (3.0 MPa). The machine is specified for both oxygen and nitrogen service (O₂/N₂).
Can this machine handle oxygen and nitrogen at the same time?+
No — it handles one gas at a time. The O₂/N₂ designation means the machine's materials, seals and surface treatment are compatible with either gas. In a cryogenic air separation plant, separate compressor trains are typically specified for oxygen and nitrogen circuits. Specify which gas the machine will handle when enquiring.
What information is needed for a full specification and quotation?+
Gas composition and purity, inlet and outlet pressure and temperature, normal and maximum flow at inlet conditions, power supply voltage and frequency, cooling water conditions, site altitude and ambient temperature, and any explosion-proof or documentation requirements. The ASU compressor data sheet from your process licensor is the standard starting document.
How does this differ from the standard 30 bar industrial oxygen boosters?+
The standard high-pressure oxygen boosters (ZW, LW, DW, 4MW catalogue machines) have published fixed parameters for industrial oxygen pipeline service. The 4ZW-84/30 is an ASU-grade machine supplied against a process data sheet from the air separation system designer — motor, cooling system, control interface and documentation are all determined by that process data, not a fixed catalogue.
What is the difference between the 4ZW-84/30 and the 4MW-93/35?+
Two distinct machines on different frame platforms. The 4ZW-84/30 uses the ZW-type four-column frame (84 m³/min, 3.0 MPa). The 4MW-93/35 uses the MW-type four-column frame (93 m³/min, 3.5 MPa). The MW frame is suited to higher capacity and pressure. Frame selection is determined by your process data sheet.

The 4ZW-84/30 is a four-column ZW-type reciprocating compressor for oxygen and nitrogen service in large-scale cryogenic air separation plants (ASU). The model designation encodes its core parameters: 4ZW identifies a four-column ZW-type reciprocating frame; 84 is the rated flow in m³/min; 30 is the outlet pressure in bar (3.0 MPa). Gas service: O₂ / N₂.

Confirmed Technical Parameters

Parameter Value
Model 4ZW-84/30
Gas Service O₂ / N₂ (oxygen or nitrogen)
Flow Rate 84 m³/min
Outlet Pressure 3.0 MPa (30 bar)
Frame Layout 4-column ZW-type reciprocating
Application Cryogenic air separation plant
Design Standard API 618 and Chinese national standards
Motor Power Available on enquiry (process-dependent)
Weight Available on enquiry (process-dependent)
Overall Dimensions Available on enquiry (process-dependent)
Compression Stages Available on enquiry (process-dependent)
Voltage Available on enquiry (process-dependent)
Cooling Available on enquiry (process-dependent)

About the 4ZW-84/30

Unlike standard industrial oxygen booster compressors selected from a fixed catalogue, the 4ZW-84/30 is supplied against the process data sheet issued by the ASU licensor or engineering contractor. Motor configuration, cooling system design, control interface and documentation package are all determined by that process data.

The machine is compatible with both oxygen and nitrogen service. The intended gas is confirmed at order placement. In a cryogenic air separation plant, separate compressor trains are typically specified for oxygen and nitrogen circuits.

The 4ZW-84/30 operates at 3.0 MPa (30 bar). For applications requiring 3.5 MPa (35 bar), see the 4MW-93/35.

How to Enquire

To receive a full technical proposal, provide: gas type and purity, inlet and outlet pressure and temperature, flow rate at inlet conditions (normal, maximum and minimum), power supply voltage and frequency, cooling water conditions, site altitude and ambient temperature, explosion-proof zone classification, and any required certifications. The ASU compressor data sheet from your process licensor is the standard starting document.

Manufacturer Background

Jiangxi Gas Compressor Co., Ltd. has been dedicated to cryogenic distillation air separation, PSA and VPSA compressor systems since the 1980s, supplying domestic and international air separation plant manufacturers, engineering contractors and industrial gas companies. Products are designed to API 618 and applicable Chinese national standards. ISO 9001 certified. Deputy Chairman unit of the China Compressor Industry Association.