Lower-inlet ZW example
ZW-0.66/0.2-25
50 Nm³/h
0.02 → 2.5 MPa
18.5 kW
2000 × 1500 × 1700 mm
Bengbu
Select the medium and suction duty, then define the recovery destination, controls and engineered package.

BENGBU AIPU COMPRESSOR
蚌埠艾普压缩机制造有限公司 describes establishment in June 2002 in Bengbu, with an early focus on chemical-process compressors and natural-gas recovery. Its present catalogue combines compression equipment with chemical-tail-gas and oilfield-gas recovery integration.
CHEMICAL PROCESS · THREE DIFFERENT MEDIA
Aipu’s process page addresses single or mixed gases in petrochemical flows. Its table pairs medium, Nm³/h, inlet MPa, discharge MPa and motor kW. The examples below are separate selections.
| Medium / model | Normal flow | Inlet → discharge | Motor / envelope |
|---|---|---|---|
| Ammonia DW-1.95/20-50 | 2100 Nm³/h | 2.0 → 5.0 MPa | 132 kW 4500 × 2700 × 2600 mm |
| Ethylene DW-0.65/(4-8)-45 | 235 Nm³/h | 0.4–0.8 → 4.5 MPa | 37 kW 4500 × 2700 × 2600 mm |
| Carbon monoxide ZW-0.25/20-30 | 275 Nm³/h | 2.0 → 3.0 MPa | 7.5 kW 2000 × 1500 × 1700 mm |

Give composition and variation, inlet temperature and available pressure, required outlet pressure, normal/base/peak flow, duty cycle and contaminant or entrained-liquid conditions.
The source does not fully define the “N” volume reference or gauge/absolute pressure convention. Agree these before comparing capacity or calculating the compression task.
Request the offered materials, sealing, purity/carryover limits, cooling and protection arrangement. A gas name does not establish compatibility with a changed mixture.
Read more gas-specific process examples →RECOVERY DESTINATION · SUCTION CONDITIONS
The manufacturer names LNG tank boil-off and residual gas after tanker unloading, including L-CNG, reserve, peak-shaving, gasification stations and liquefaction plants. Recovery into LNG tanks or making CNG are separate catalogue routes.
Define gas temperature, separation/conditioning, transient unloading/boil-off profile, receiving-network pressure and vent/recovery routing. These gas rows are not liquid-LNG pump specifications.
BOG scope and installation questions →
ZW-0.66/0.2-25
50 Nm³/h
0.02 → 2.5 MPa
18.5 kW
2000 × 1500 × 1700 mm
ZW-1.55/10-30
880 Nm³/h
1.0 → 3.0 MPa
75 kW
Same published envelope; different suction duty
MV-6.0/(8-12)-50
3500 Nm³/h
0.8–1.2 → 5.0 MPa
400 kW
7500 × 2700 × 2600 mm
These natural-gas rows are separate catalogue duties. Nm³/h is not actual inlet m³/h; capacity alone is not an efficiency ranking. Agree volume and pressure bases, composition and the offered performance envelope.
Natural-gas duties and controls →DESIGN COORDINATION · SAFETY CONTROLS · ORDER TERMS
Aipu’s service page describes process review before sale and design coordination covering process flow, dimensions, safety controls, complete scope and utility/loss conditions. Use those deliverables to reconcile the machine with the actual site.
Offered-model performance, P&ID, gas-contact materials and seals, cooling/conditioning, vents and recovery, dimensions, utilities and service/removal access.
Electrical/control interfaces, hazardous-area requirements, protective/interlock schedule, operation/turndown concept, factory tests and agreed acceptance conditions.
Delivered manuals, wear-part list, operator/maintenance training, qualified commissioning, destination support and spare-parts responsibilities.
First establish normal reference conditions, actual suction temperature/pressure and gas composition. The published capacity basis is not actual inlet volume.
The picture is labelled ZW-2.7/(1-4)-6. The selected ZW-4.0, ZW-3.3 and low-inlet DW examples are different catalogue duties; request the actual offered model drawing.
Composition and variation, contaminants/liquid conditions, inlet temperature/pressure envelope, delivery pressure, flow basis and duty cycle, plus required materials, purity, safety and process interfaces.
Send medium, inlet envelope, required delivery pressure, normal/base/peak flow and whether the purpose is process compression, BOG-to-pipeline recovery or natural-gas boosting.
Prepare an Aipu enquirySpecification pages
| Duty | Write on the RFQ |
|---|---|
| Process gas compressor manufacturers in China | Process gas is not plant air. Molecular weight, suction pressure, discharge pressure and flow size the machine. A kW from an air catalogue is unused. |
Information reviewed 2026-10-08. Specifications apply only to the models and conditions stated.
Aipu: Select the medium and suction duty, then define the recovery destination, controls and engineered package.
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