Compare the ZX and ZXH Series Reciprocating Compressors
QualRotate offers reciprocating compressor solutions for different process and natural gas applications. The ZX series is designed for heavy-duty process applications, while the ZXH series is intended for high-speed natural gas applications. Compare their published ranges below to identify which series may be relevant to your project.
| Selection Factor | ZX Series — Process Duty | ZXH Series — High-Speed Duty |
| Design basis | API 618-oriented heavy-duty process service | ISO 13631-based service; API 618 available for specified project requirements |
| Typical applications | Petrochemical and refinery services; methanol, ethylene and fertilizer production; natural gas transmission and injection | Natural gas gathering, processing and storage, including CNG and LNG services |
| Published series power range | 35–33,555 kW | 405–6,500 kW |
| Published series speed range | 240–720 RPM | 600–1,800 RPM |
| Frame options | ZX-A, ZX-B, ZX-C, ZX-D, ZX-E, ZX-F, ZX-G, ZX-GA and ZX-GB | ZXH-H, ZXH-I and ZXH-J |
| Model-level data available | Stroke, throws, maximum power, MACCRL and cylinder bore range | Stroke, throws, maximum power, MACCRL and cylinder bore range |
Use this reciprocating compressor specification comparison for initial screening. The figures describe series-level ranges, not a single model, and the listed limits do not necessarily apply simultaneously.
The ZX series is generally relevant to refinery and chemical process duties, while the ZXH series is primarily intended for natural gas gathering, processing and storage. For applications that may be suitable for either series, the appropriate configuration should be determined based on the specific operating conditions and project requirements.
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