{"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\/nl\/product\/zw-8-6-nitrogen-compressor\/","title":{"rendered":"ZW-8\/6 stikstofcompressor \u2013 compacte olievrije N2-booster voor lagedruk industri\u00eble gassystemen"},"content":{"rendered":"
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ZW-8\/6 stikstofcompressor \u2013 compacte olievrije N2-booster voor lagedruk industri\u00eble gassystemen<\/h1>\n

De ZW-8\/6 is een tweetraps, tweerijige olievrije zuigercompressor voor stikstof, ontworpen om 8 m\u00b3\/min te leveren bij een persdruk van 0,60 MPa. Hij is geschikt voor kleinschalige cryogene luchtscheiding, stikstofvoorziening in laboratoria en compacte VPSA-boosterstations. De compressor is olievrij, compact en geoptimaliseerd voor zowel intermitterend als continu gebruik.<\/p>\n

Vraag een offerte aan<\/a>
\nBekijk de N2-compressorserie<\/a><\/div>\n

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

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Productoverzicht<\/h2>\n

De 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> en een afvoerdruk van 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 volledig olievrij compressiemechanisme<\/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

Zijn tweetraps, twee rijen (\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
Parameter<\/th>\nWaarde<\/th>\nEenheid<\/th>\n<\/tr>\n<\/thead>\n
Model<\/td>\nZW-8\/6<\/td>\n\u2013<\/td>\n<\/tr>\n
Patroon<\/td>\nTweetraps, twee rijen (\u4e8c\u5217\u4e8c\u7ea7)<\/td>\n\u2013<\/td>\n<\/tr>\n
Capaciteit<\/td>\n8<\/td>\nm\u00b3\/min<\/td>\n<\/tr>\n
Afvoerdruk<\/td>\n0.60<\/td>\nMPa<\/td>\n<\/tr>\n
Compressorafmetingen (L \u00d7 B \u00d7 H)<\/td>\n2250 \u00d7 1296 \u00d7 2200<\/td>\nmm<\/td>\n<\/tr>\n
Gewicht<\/td>\n2.00<\/td>\nT<\/td>\n<\/tr>\n
Stroom<\/td>\n55<\/td>\nkW<\/td>\n<\/tr>\n
Spanning<\/td>\n380<\/td>\nV<\/td>\n<\/tr>\n
Gasmedium<\/td>\nStikstof (N\u2082)<\/td>\n\u2013<\/td>\n<\/tr>\n
Smering<\/td>\nOlievrij<\/td>\n\u2013<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

* Alle specificaties zijn gebaseerd op standaard referentieomstandigheden (ISO 1217, bijlage C). De werkelijke prestaties kunnen vari\u00ebren afhankelijk van de hoogte van de locatie, de omgevingstemperatuur en de inlaatcondities.<\/em><\/p>\n<\/div>\n

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Belangrijkste kenmerken en technische voordelen<\/h2>\n

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

Bij 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 zelfsmurend zuigerveer- en geleidebandsysteem<\/strong> constructed from high-performance PTFE composites. These rings operate with a coefficient of friction below 0.08 without any hydrocarbon lubricant, delivering ISO 8573-1 Klasse 0 oliegehalte<\/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

De tweefasige, tweerijige architectuur<\/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. Standard 380V Direct-On-Line Motor Drive<\/h3>\n

The ZW-8\/6 is powered by a 55 kW, 380V, 50Hz three-phase induction motor<\/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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Toepassingsscenario's<\/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 primaire stikstofbooster<\/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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Materiaal en constructie<\/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
component<\/th>\nMateriaal<\/th>\nSpecificatie<\/th>\n<\/tr>\n<\/thead>\n
Cilinderblok<\/td>\nGrijs gietijzer<\/td>\nGG25 \/ HT250, ge\u00efntegreerde koelkanalen<\/td>\n<\/tr>\n
Krukas<\/td>\nGesmeed gelegeerd staal<\/td>\n42CrMo4, Q&T, dynamisch gebalanceerd<\/td>\n<\/tr>\n
Zuigerveren<\/td>\nPTFE-glas-bronscomposiet<\/td>\nZelfsmerend, olievrij gecertificeerd<\/td>\n<\/tr>\n
Rider Bands<\/td>\nPTFE-composiet<\/td>\nPiston guidance, anti-scuffing<\/td>\n<\/tr>\n
Klepplaten<\/td>\nRoestvrij staal<\/td>\nSS316, ontwerp met concentrische ringveren<\/td>\n<\/tr>\n
Intercooler<\/td>\nBehuizing van koolstofstaal \/ buizen van SS304<\/td>\nCompact shell-and-tube, 1.5\u00d7 hydrotest<\/td>\n<\/tr>\n
Basisframe<\/td>\nConstructiestaal<\/td>\nWelded, vibration-damped mounting<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Alle drukdragende componenten voldoen aan ASME BPVC Sectie VIII Divisie 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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Installatie- en onderhoudsrichtlijnen<\/h2>\n

Fundament- en ruimtelijke vereisten<\/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> is sufficient for stable operation, mounted on elastomeric vibration isolators (natural frequency 8\u201312 Hz). The two-row opposed-cylinder arrangement inherently cancels first-order inertial forces, minimizing vibration transmission. Required clearances: 1.0 m on the non-drive side for valve maintenance, 0.8 m on the drive side for motor access, and 1.5 m overhead for routine service.<\/p>\n

Specificaties koelwater<\/h3>\n

De koelwaterbehoefte bedraagt \u200b\u200bongeveer 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

Onderhoudsintervallen<\/h3>\n
\n\n\n\n\n\n\n\n\n\n
Interval<\/th>\nServiceartikel<\/th>\nActie vereist<\/th>\n<\/tr>\n<\/thead>\n
Dagelijks<\/td>\nVisuele en operationele controle<\/td>\nInspect for leaks, abnormal noise, cooling water flow<\/td>\n<\/tr>\n
250 uur<\/td>\nKlepplaatinspectie<\/td>\nControleer op koolstofafzettingen, veermoeheid of scheuren in de plaat.<\/td>\n<\/tr>\n
1.000 uur<\/td>\nBeoordeling van de slijtage van de zuigerveren<\/td>\nMeasure groove clearance; replace if > 0.20 mm<\/td>\n<\/tr>\n
4000 uur<\/td>\nTussenliggende dienst<\/td>\nVervang de zuigerveren, klepstoters en klepmechanismen.<\/td>\n<\/tr>\n
8.000 uur<\/td>\nGrote revisie<\/td>\nControleer de krukas, meet de lagerspeling en vervang indien nodig.<\/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 PTFE-zuigerveren en geleidebanden<\/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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Certificeringen voor naleving en veiligheid<\/h2>\n

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

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Drukapparatuur<\/strong>
\nASME BPVC Sectie VIII Div.1, GB 150-2011, PED 2014\/68\/EU Module A<\/span><\/div>\n
Elektrische en machineveiligheid<\/strong>
\nIEC 60034-1 (IE3-effici\u00ebntie), IEC 60204-1, ISO 12100<\/span><\/div>\n
Olievrij certificaat<\/strong>
\nISO 8573-1 Klasse 0 (oliegehalte), getest door T\u00dcV Rheinland<\/span><\/div>\n
Kwaliteit & Milieu<\/strong>
\nISO 9001:2015, ISO 14001:2015<\/span><\/div>\n<\/div>\n
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\u26a0\ufe0f Veiligheidsbericht<\/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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Prestatie- en effici\u00ebntieanalyse<\/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 eliminatie van oliegerelateerde verbruiksartikelen en apparatuur voor verdere zuivering<\/strong> in plaats van marginale energiebesparingen.<\/p>\n

De totale eigendomskosten voor stikstofcompressie<\/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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Mogelijkheden voor maatwerk en OEM-productie<\/h2>\n

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