{"id":546,"date":"2026-07-20T03:15:54","date_gmt":"2026-07-20T03:15:54","guid":{"rendered":"https:\/\/n2-compressor.com\/?post_type=product&p=546"},"modified":"2026-07-20T03:16:21","modified_gmt":"2026-07-20T03:16:21","slug":"zw-8-6-nitrogen-compressor","status":"publish","type":"product","link":"https:\/\/n2-compressor.com\/es\/producto\/zw-8-6-nitrogen-compressor\/","title":{"rendered":"Compresor de nitr\u00f3geno ZW-8\/6: compresor de N2 compacto y sin aceite para sistemas de gas industriales de baja presi\u00f3n."},"content":{"rendered":"
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Compresor de nitr\u00f3geno ZW-8\/6: compresor de N2 compacto y sin aceite para sistemas de gas industriales de baja presi\u00f3n.<\/h1>\n

Engineered to deliver 8 m\u00b3\/min at 0.60 MPa discharge pressure, the ZW-8\/6 is a two-stage, two-row oil-free piston nitrogen compressor designed for small-scale cryogenic air separation, laboratory nitrogen supply, and compact VPSA booster stations. Zero oil contamination, space-efficient footprint, and optimized for intermittent to continuous-duty operation.<\/p>\n

Solicitar presupuesto<\/a>
\nVer la serie de compresores N2<\/a><\/div>\n

\"ZW-8\/6<\/p>\n<\/div>\n

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Descripci\u00f3n general del producto<\/h2>\n

El ZW-8\/6 nitrogen compressor<\/strong> represents a compact yet capable solution within our oil-free piston compressor family, specifically tailored for small-scale nitrogen boosting applications where space constraints and operational simplicity are paramount. With a rated capacity of 8 m\u00b3\/min<\/strong> y una presi\u00f3n de descarga de 0.60 MPa<\/strong>, this unit occupies the entry-level segment of our industrial nitrogen compressor portfolio while maintaining the same engineering rigor as our larger models.<\/p>\n

The ZW-8\/6 distinguishes itself through a mecanismo de compresi\u00f3n completamente libre de aceite<\/strong> utilizing self-lubricating PTFE composite piston rings and rider bands. This design philosophy eliminates any possibility of hydrocarbon contamination in the nitrogen product stream, making the unit immediately suitable for laboratory-grade nitrogen, small-batch food packaging, pharmaceutical R&D, and electronics assembly line inerting without additional downstream purification equipment.<\/p>\n

Es dos etapas, dos filas (\u4e8c\u5217\u4e8c\u7ea7)<\/strong> configuration delivers a higher pressure ratio than single-stage alternatives while maintaining thermal stability through inter-stage cooling. The compact dimensions\u20142250 \u00d7 1296 \u00d7 2200 mm<\/strong>\u2014allow the ZW-8\/6 to fit into existing machinery rooms, containerized installations, or mobile nitrogen supply skids where floor space is at a premium. At just 2.00 tonnes<\/strong>, the unit can be transported and positioned without heavy-lift equipment.<\/p>\n

\"ZW<\/p>\n<\/div>\n

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Technical Specifications \u2013 ZW-8\/6<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Par\u00e1metro<\/th>\nValor<\/th>\nUnidad<\/th>\n<\/tr>\n<\/thead>\n
Modelo<\/td>\nZW-8\/6<\/td>\n\u2013<\/td>\n<\/tr>\n
Patr\u00f3n<\/td>\nDos etapas, dos filas (\u4e8c\u5217\u4e8c\u7ea7)<\/td>\n\u2013<\/td>\n<\/tr>\n
Capacidad<\/td>\n8<\/td>\nm\u00b3\/min<\/td>\n<\/tr>\n
Presi\u00f3n de descarga<\/td>\n0.60<\/td>\nMPa<\/td>\n<\/tr>\n
Dimensiones del compresor (largo \u00d7 ancho \u00d7 alto)<\/td>\n2250 \u00d7 1296 \u00d7 2200<\/td>\nmm<\/td>\n<\/tr>\n
Peso<\/td>\n2.00<\/td>\nt<\/td>\n<\/tr>\n
Fuerza<\/td>\n55<\/td>\nkW<\/td>\n<\/tr>\n
Voltaje<\/td>\n380<\/td>\nV<\/td>\n<\/tr>\n
Medio gaseoso<\/td>\nNitr\u00f3geno (N\u2082)<\/td>\n\u2013<\/td>\n<\/tr>\n
Lubricaci\u00f3n<\/td>\nSin aceite<\/td>\n\u2013<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

* Todas las especificaciones se basan en condiciones de referencia est\u00e1ndar (ISO 1217, Anexo C). El rendimiento real puede variar seg\u00fan la altitud del lugar, la temperatura ambiente y las condiciones de entrada.<\/em><\/p>\n<\/div>\n

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Caracter\u00edsticas principales y ventajas de ingenier\u00eda<\/h2>\n

1. Compact Footprint for Space-Constrained Installations<\/h3>\n

En 2250 \u00d7 1296 \u00d7 2200 mm<\/strong>, the ZW-8\/6 occupies less than 3 m\u00b2 of floor space, making it one of the most compact oil-free nitrogen compressors in its capacity class. This dimensional efficiency is achieved through a vertically oriented crankcase design that minimizes the machine’s longitudinal footprint while maintaining adequate maintenance access. The 2.00-tonne weight permits installation using standard forklift equipment, eliminating the need for overhead cranes or specialized rigging during commissioning or relocation.<\/p>\n

2. Oil-Free PTFE Sealing Technology<\/h3>\n

The ZW-8\/6 employs a Sistema de anillos de pist\u00f3n y bandas de gu\u00eda autolubricantes<\/strong> constructed from high-performance PTFE composites. These rings operate with a coefficient of friction below 0.08 without any hydrocarbon lubricant, delivering Contenido de aceite seg\u00fan la norma ISO 8573-1 Clase 0<\/strong> in the compressed nitrogen stream. For small-scale users such as analytical laboratories, food R&D facilities, and electronics manufacturers, this native oil-free certification eliminates the capital expense and maintenance burden of downstream oil-filtration systems that would otherwise be mandatory.<\/p>\n

3. Two-Stage Compression for Higher Pressure Ratios<\/h3>\n

El arquitectura de dos etapas y dos filas<\/strong> divides the pressure ratio between a low-pressure cylinder and a high-pressure cylinder, with an inter-stage shell-and-tube cooler removing the heat of compression. This staged approach limits the discharge temperature of each stage to below 150\u00b0C, preventing thermal degradation of the PTFE sealing elements and extending valve plate life by approximately 30% compared to single-stage compressors operating at equivalent overall pressure ratios. The 0.60 MPa discharge pressure is particularly well-suited for medium-pressure nitrogen distribution in small industrial facilities.<\/p>\n

4. Accionamiento de motor est\u00e1ndar de 380 V de conexi\u00f3n directa en l\u00ednea.<\/h3>\n

The ZW-8\/6 is powered by a Motor de inducci\u00f3n trif\u00e1sico de 55 kW, 380 V, 50 Hz<\/strong> rated to IEC 60034-1 IE3 efficiency class. The standard low-voltage configuration integrates directly into existing 380V industrial distribution panels without requiring medium-voltage infrastructure, step-down transformers, or specialized switchgear. This electrical simplicity reduces both capital expenditure and commissioning complexity, making the ZW-8\/6 an attractive option for facilities upgrading from bottled nitrogen or membrane generators to on-site compression.<\/p>\n

\"ZW-8\/6<\/p>\n<\/div>\n

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Escenarios de aplicaci\u00f3n<\/h2>\n

Small-Scale Cryogenic Air Separation Units<\/h3>\n

In compact cryogenic ASU installations producing 200\u2013500 Nm\u00b3\/h of gaseous nitrogen, the ZW-8\/6 serves as the potenciador de nitr\u00f3geno primario<\/strong> between the cold box and the distribution network. Its 8 m\u00b3\/min capacity aligns with the output of small-scale ASUs, while the 0.60 MPa discharge pressure provides sufficient head for distribution to nearby process equipment, laboratory fume hoods, or storage tank blanketing systems. The oil-free design is critical in these applications because small ASUs typically lack the extensive purification trains found in large facilities, making downstream oil contamination particularly problematic.<\/p>\n

\"ZW-8\/6<\/p>\n

Compact VPSA Nitrogen Booster Stations<\/h3>\n

For small to medium VPSA nitrogen generators producing 99.5\u201399.9% purity nitrogen at near-atmospheric pressure, the ZW-8\/6 nitrogen booster<\/a> compresses the low-pressure product to 0.60 MPa for distribution. The compact footprint of the ZW-8\/6 allows it to be mounted on the same skid as the VPSA generator, creating a fully integrated nitrogen supply system that occupies minimal floor space. The oil-free compression path protects the carbon molecular sieve from hydrocarbon poisoning, preserving the generator’s separation efficiency and extending adsorbent life.<\/p>\n

Laboratory & Analytical Gas Supply<\/h3>\n

Research laboratories, analytical chemistry facilities, and university science departments require a reliable supply of high-purity nitrogen for gas chromatography, mass spectrometry, and inert atmosphere glove boxes. The ZW-8\/6’s oil-free certification ensures that the nitrogen stream meets the stringent purity requirements of analytical instruments without requiring additional purification cartridges. The 8 m\u00b3\/min capacity can support multiple GC-MS systems, ICP-MS instruments, and glove boxes operating simultaneously within a single laboratory building.<\/p>\n

\"ZW-8\/6<\/p>\n

Electronics Manufacturing & Soldering Inerting<\/h3>\n

In electronics assembly facilities, nitrogen is used for wave soldering inerting, reflow oven atmosphere control, and component storage dry cabinets<\/strong>. The ZW-8\/6’s 0.60 MPa discharge pressure is adequate for feeding nitrogen distribution manifolds serving multiple soldering lines and storage cabinets. The oil-free design is non-negotiable in electronics applications because even trace oil contamination can cause solder joint defects, conformal coating adhesion failures, and contamination of sensitive optical components.<\/p>\n<\/div>\n

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Materiales y construcci\u00f3n<\/h2>\n

The ZW-8\/6 is constructed from materials selected for nitrogen compatibility, corrosion resistance, and compact structural integrity:<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n
Componente<\/th>\nMaterial<\/th>\nEspecificaci\u00f3n<\/th>\n<\/tr>\n<\/thead>\n
Bloque de cilindros<\/td>\nHierro fundido gris<\/td>\nGG25 \/ HT250, conductos de refrigeraci\u00f3n integrales<\/td>\n<\/tr>\n
Cig\u00fce\u00f1al<\/td>\nAcero aleado forjado<\/td>\n42CrMo4, Q&T, equilibrado din\u00e1micamente<\/td>\n<\/tr>\n
Anillos de pist\u00f3n<\/td>\nCompuesto de PTFE, vidrio y bronce<\/td>\nAutolubricante, sin aceite.<\/td>\n<\/tr>\n
Bandas de jinete<\/td>\nCompuesto de PTFE<\/td>\nGu\u00eda del pist\u00f3n, antidesgaste<\/td>\n<\/tr>\n
Placas de v\u00e1lvulas<\/td>\nAcero inoxidable<\/td>\nDise\u00f1o de resorte de anillo conc\u00e9ntrico SS316<\/td>\n<\/tr>\n
Intercooler<\/td>\nCarcasa de acero al carbono \/ Tubos de acero inoxidable SS304<\/td>\nCompact shell-and-tube, 1.5\u00d7 hydrotest<\/td>\n<\/tr>\n
Marco base<\/td>\nAcero estructural<\/td>\nMontaje soldado con amortiguaci\u00f3n de vibraciones<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Todos los componentes sometidos a presi\u00f3n cumplen con ASME BPVC Secci\u00f3n VIII Divisi\u00f3n 1<\/strong> or Chinese GB 150 standards. Weld joints are subjected to 100% radiographic inspection (RT), and each pressure vessel undergoes hydrostatic testing at 1.5\u00d7 MAWP for a minimum 30-minute hold period before release.<\/p>\n

\"ZW-8\/6<\/p>\n<\/div>\n

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Gu\u00eda de instalaci\u00f3n y mantenimiento<\/h2>\n

Requisitos de cimentaci\u00f3n y espaciales<\/h3>\n

The ZW-8\/6 weighs 2.00 tonnes and features a low center of gravity due to its compact vertical design. A reinforced concrete pad of 3\u20134 tonnes<\/strong> Es suficiente para un funcionamiento estable, montado sobre aisladores de vibraci\u00f3n elastom\u00e9ricos (frecuencia natural de 8 a 12 Hz). La disposici\u00f3n de cilindros opuestos en dos filas cancela inherentemente las fuerzas inerciales de primer orden, minimizando la transmisi\u00f3n de vibraciones. Espacio libre requerido: 1,0 m en el lado opuesto al de accionamiento para el mantenimiento de la v\u00e1lvula, 0,8 m en el lado de accionamiento para el acceso al motor y 1,5 m por encima para el mantenimiento rutinario.<\/p>\n

Especificaciones del agua de refrigeraci\u00f3n<\/h3>\n

La demanda de agua de refrigeraci\u00f3n es aproximadamente 12 m\u00b3\/h<\/strong> at an inlet temperature not exceeding 32\u00b0C. The water distribution circuit feeds the cylinder jackets and intercooler in parallel. Acceptable water quality: pH 6.5\u20138.5, total hardness < 300 mg\/L as CaCO\u2083, chloride < 50 mg\/L, suspended solids < 30 mg\/L. For installations without reliable municipal water supply, a compact closed-loop cooling tower with a 1 m\u00b3 buffer tank is recommended.<\/p>\n

Intervalos de mantenimiento<\/h3>\n
\n\n\n\n\n\n\n\n\n\n
Intervalo<\/th>\nArt\u00edculo de servicio<\/th>\nAcci\u00f3n requerida<\/th>\n<\/tr>\n<\/thead>\n
A diario<\/td>\nVerificaci\u00f3n visual y operativa<\/td>\nInspeccione si hay fugas, ruidos anormales o flujo de agua de refrigeraci\u00f3n.<\/td>\n<\/tr>\n
250 horas<\/td>\nInspecci\u00f3n de la placa de v\u00e1lvulas<\/td>\nCompruebe si hay dep\u00f3sitos de carbono, fatiga del muelle o grietas en la placa.<\/td>\n<\/tr>\n
1.000 horas<\/td>\nEvaluaci\u00f3n del desgaste de los anillos del pist\u00f3n<\/td>\nMida la holgura de la ranura; reempl\u00e1cela si es > 0,20 mm.<\/td>\n<\/tr>\n
4.000 horas<\/td>\nServicio intermedio<\/td>\nReemplazar los anillos del pist\u00f3n, las bandas de retenci\u00f3n y los conjuntos de v\u00e1lvulas.<\/td>\n<\/tr>\n
8.000 horas<\/td>\nRevisi\u00f3n general<\/td>\nInspeccione el cig\u00fce\u00f1al, mida las holguras de los cojinetes y reempl\u00e1celos seg\u00fan sea necesario.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

The oil-free design of the ZW-8\/6 dramatically simplifies maintenance compared to lubricated alternatives. There are no oil changes to schedule, no oil samples to analyze, no filter elements to replace, and no oil separator cartridges to monitor. The only consumable wear items are the Anillos de pist\u00f3n y bandas de retenci\u00f3n de PTFE<\/strong>, which typically achieve 4,000\u20136,000 hours of service under clean nitrogen conditions.<\/p>\n

\"ZW-8\/6<\/p>\n<\/div>\n

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Certificaciones de cumplimiento y seguridad<\/h2>\n

The ZW-8\/6 nitrogen compressor meets the following international standards and regulatory requirements:<\/p>\n

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Equipos a presi\u00f3n<\/strong>
\nASME BPVC Secci\u00f3n VIII Div.1, GB 150-2011, PED 2014\/68\/EU M\u00f3dulo A<\/span><\/div>\n
Seguridad el\u00e9ctrica y de maquinaria<\/strong>
\nIEC 60034-1 (eficiencia IE3), IEC 60204-1, ISO 12100<\/span><\/div>\n
Certificaci\u00f3n sin aceite<\/strong>
\nISO 8573-1 Clase 0 (Contenido de aceite), probado por T\u00dcV Rheinland<\/span><\/div>\n
Calidad y medio ambiente<\/strong>
\nISO 9001:2015, ISO 14001:2015<\/span><\/div>\n<\/div>\n
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\u26a0\ufe0f Aviso de seguridad<\/strong><\/p>\n

Nitrogen is an odorless, colorless asphyxiant gas. All ZW-8\/6 installations must include continuous oxygen monitoring in the compressor room and adjacent areas. Ventilation must maintain ambient oxygen above 19.5% per OSHA 29 CFR 1910.146. Alarm interlocks should trigger at 19.5% O\u2082 and hard shutdown at 18.0% O\u2082. Personnel entry into enclosed compressor rooms requires portable oxygen monitors and a buddy system.<\/p>\n<\/div>\n

\"ZW-8\/6<\/p>\n<\/div>\n

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An\u00e1lisis de rendimiento y eficiencia<\/h2>\n

The ZW-8\/6 achieves a specific power consumption of approximately 6.88 kW per m\u00b3\/min<\/strong> of nitrogen at 0.60 MPa discharge pressure. While this specific power is higher than our larger LW-series models due to the reduced scale efficiency, it remains competitive within the sub-10 m\u00b3\/min oil-free piston compressor segment. For comparison, oil-lubricated screw compressors in this size range typically consume 7.2\u20138.0 kW\/m\u00b3\/min, and diaphragm compressors (often selected for oil-free applications) can exceed 10 kW\/m\u00b3\/min.<\/p>\n

Over an 8,000-hour annual operating cycle, the ZW-8\/6’s efficiency advantage versus less efficient alternatives yields approximately 20,000\u201345,000 kWh of energy savings<\/strong> per year. At $0.08\/kWh, this represents $1,600\u2013$3,600 in annual electricity cost reduction. However, the primary economic driver for ZW-8\/6 selection is typically the eliminaci\u00f3n de consumibles relacionados con el petr\u00f3leo y equipos de purificaci\u00f3n posteriores<\/strong> en lugar de ahorros marginales de energ\u00eda.<\/p>\n

El Coste total de propiedad para la compresi\u00f3n de nitr\u00f3geno<\/a> in small-scale applications is dominated by maintenance labor and consumables rather than energy. The ZW-8\/6’s oil-free design eliminates oil changes ($400\u2013800\/year), filter replacements ($200\u2013400\/year), separator cartridge changes ($600\u20131,200\/year), and oil analysis ($150\u2013300\/year), delivering a total consumable savings of $1,350\u2013$2,700 annually compared to lubricated alternatives.<\/p>\n<\/div>\n

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Capacidades de personalizaci\u00f3n y fabricaci\u00f3n de equipos originales (OEM)<\/h2>\n

We provide flexible customization options to adapt the ZW-8\/6 to specific installation constraints and end-user requirements:<\/p>\n