{"id":550,"date":"2026-07-20T05:18:42","date_gmt":"2026-07-20T05:18:42","guid":{"rendered":"https:\/\/n2-compressor.com\/?post_type=product&p=550"},"modified":"2026-07-20T05:19:04","modified_gmt":"2026-07-20T05:19:04","slug":"lw-10-8-nitrogen-compressor","status":"publish","type":"product","link":"https:\/\/n2-compressor.com\/kk\/product\/lw-10-8-nitrogen-compressor\/","title":{"rendered":"LW-10\/8 Nitrogen Compressor \u2013 Mid-Range Oil-Free N2 Booster for Industrial Distribution Networks"},"content":{"rendered":"
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LW-10\/8 Nitrogen Compressor \u2013 Mid-Range Oil-Free N2 Booster for Industrial Distribution Networks<\/h1>\n

Delivering 10 m\u00b3\/min at 0.80 MPa discharge pressure, the LW-10\/8 is a two-stage, two-row oil-free piston nitrogen compressor engineered for medium-scale cryogenic air separation, VPSA nitrogen booster stations, and industrial pipeline distribution. Zero lubricant contamination, continuous-duty rated, and built for reliable 24\/7 operation in demanding industrial environments.<\/p>\n

\u0411\u0430\u0493\u0430 \u0441\u04b1\u0440\u0430\u0443<\/a>
\nView N2 Compressor Series<\/a><\/div>\n

\"LW-10\/8<\/p>\n<\/div>\n

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\u04e8\u043d\u0456\u043c\u0433\u0435 \u0448\u043e\u043b\u0443<\/h2>\n

The LW-10\/8 nitrogen compressor<\/strong> occupies a strategic position in our oil-free piston compressor lineup, bridging the gap between compact entry-level units and high-capacity industrial models. With a rated capacity of 10 m\u00b3\/min<\/strong> and a discharge pressure of 0.80 MPa<\/strong>, this unit serves as the backbone of medium-scale nitrogen distribution systems in cryogenic air separation plants, VPSA booster stations, and industrial gas pipeline networks.<\/p>\n

What sets the LW-10\/8 apart from conventional lubricated alternatives is its fully oil-free compression path<\/strong>. The piston rings and rider bands are manufactured from self-lubricating PTFE composite materials that operate without hydrocarbon lubricants, ensuring the nitrogen stream remains completely free of oil contamination. This characteristic is essential for applications requiring ISO 8573-1 Class 0 certification, including food packaging nitrogen, pharmaceutical inerting, electronics manufacturing, and chemical process blanketing.<\/p>\n

The compressor employs a two-stage, two-row (\u4e8c\u5217\u4e8c\u7ea7)<\/strong> configuration that divides the total pressure ratio across two compression cylinders. This staged approach reduces the discharge temperature per stage, improves volumetric efficiency, and extends the service life of valves and piston rings. Each stage is equipped with an independent intercooler, ensuring gas temperatures remain within safe operating limits even during sustained maximum load operation. The robust cast-iron frame and precision-machined crankshaft assembly are rated for over 100,000 hours<\/strong> of service life under standard maintenance protocols.<\/p>\n

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

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Technical Specifications \u2013 LW-10\/8<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nValue<\/th>\nUnit<\/th>\n<\/tr>\n<\/thead>\n
\u041c\u043e\u0434\u0435\u043b\u044c<\/td>\nLW-10\/8<\/td>\n\u2013<\/td>\n<\/tr>\n
\u04e8\u0440\u043d\u0435\u043a<\/td>\nTwo-stage, Two-row (\u4e8c\u5217\u4e8c\u7ea7)<\/td>\n\u2013<\/td>\n<\/tr>\n
\u0421\u044b\u0439\u044b\u043c\u0434\u044b\u043b\u044b\u0493\u044b<\/td>\n10<\/td>\n\u043c\u00b3\/\u043c\u0438\u043d<\/td>\n<\/tr>\n
\u0428\u044b\u0493\u0430\u0440\u0443 \u049b\u044b\u0441\u044b\u043c\u044b<\/td>\n0.80<\/td>\n\u041c\u041f\u0430<\/td>\n<\/tr>\n
Compressor Size (L \u00d7 W \u00d7 H)<\/td>\n2340 \u00d7 910 \u00d7 2070<\/td>\nmm<\/td>\n<\/tr>\n
\u0421\u0430\u043b\u043c\u0430\u049b<\/td>\n1.80<\/td>\nt<\/td>\n<\/tr>\n
\u049a\u0443\u0430\u0442<\/td>\n65<\/td>\n\u043a\u0412\u0442<\/td>\n<\/tr>\n
\u0412\u043e\u043b\u044c\u0442\u0430\u0436<\/td>\n380<\/td>\nV<\/td>\n<\/tr>\n
\u0413\u0430\u0437 \u043e\u0440\u0442\u0430\u0441\u044b<\/td>\nNitrogen (N\u2082)<\/td>\n\u2013<\/td>\n<\/tr>\n
Lubrication<\/td>\nOil-free<\/td>\n\u2013<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

* All specifications are rated at standard reference conditions (ISO 1217, Annex C). Actual performance may vary based on site altitude, ambient temperature, and inlet conditions.<\/em><\/p>\n<\/div>\n

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Key Features & Engineering Advantages<\/h2>\n

1. Oil-Free PTFE Composite Sealing System<\/h3>\n

The LW-10\/8 utilizes a proprietary self-lubricating piston ring and rider band assembly<\/strong> manufactured from high-density PTFE composites reinforced with glass fiber and bronze particulates. This material achieves a coefficient of friction below 0.08 without any external hydrocarbon lubrication, completely eliminating the risk of oil vapor carryover into the nitrogen product stream. For operators in regulated industries, this translates directly to ISO 8573-1 Class 0 compliance<\/strong> without the capital expense and ongoing maintenance burden of downstream oil-filtration equipment such as coalescing filters, activated carbon adsorbers, and oil monitoring instrumentation.<\/p>\n

2. Two-Stage Thermodynamic Optimization<\/h3>\n

The two-stage compression architecture<\/strong> of the LW-10\/8 is thermodynamically optimized for the 0.80 MPa discharge pressure target. By dividing the pressure ratio between a low-pressure cylinder and a high-pressure cylinder, the compressor achieves a lower mean effective temperature per stage. A dedicated shell-and-tube intercooler between stages removes the heat of compression, maintaining discharge temperatures below 155\u00b0C even at maximum continuous load. This thermal management strategy extends valve plate life by approximately 35% compared to single-stage designs operating at equivalent overall pressure ratios, and it prevents thermal degradation of the PTFE sealing elements that could otherwise compromise oil-free performance.<\/p>\n

3. Compact Yet Robust Frame Construction<\/h3>\n

The main frame is cast from GG25 gray cast iron<\/strong> (equivalent to ASTM A48 Class 30B) with integral cooling water passages. The two-row opposed-cylinder arrangement provides natural first-order force cancellation, reducing the unbalanced inertia forces transmitted to the foundation by over 80% compared to single-row designs. At just 1.80 tonnes<\/strong>, the LW-10\/8 can be installed using standard forklift equipment, yet its robust construction is rated for over 100,000 hours of service life. The compact dimensions\u20142340 \u00d7 910 \u00d7 2070 mm<\/strong>\u2014make it suitable for installations where floor space is limited, such as retrofit projects in existing compressor houses or containerized nitrogen supply systems.<\/p>\n

4. Standard 380V Industrial Motor Drive<\/h3>\n

The LW-10\/8 is driven by a 65 kW, 380V, 50Hz three-phase induction motor<\/strong> conforming to IEC 60034-1 efficiency class IE3. 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 LW-10\/8 an attractive option for facilities upgrading from liquid nitrogen vaporization or bottled gas to on-site compression. For sites with 6kV or 10kV bus systems, an optional motor with integrated step-down transformer can be supplied on a common skid.<\/p>\n

\"LW-10\/8<\/p>\n<\/div>\n

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Application Scenarios<\/h2>\n

Medium-Scale Cryogenic Air Separation Plants<\/h3>\n

In cryogenic ASU (Air Separation Unit) facilities producing 500\u20131,500 Nm\u00b3\/h of gaseous nitrogen, the LW-10\/8 serves as the primary nitrogen booster<\/strong> between the cold box and the gaseous nitrogen distribution header. Its 10 m\u00b3\/min capacity matches the output of medium-scale ASUs, while the 0.80 MPa discharge pressure is optimized for pipeline distribution to downstream consumers such as chemical reactor blanketing systems, steel mill inerting stations, and LNG plant purge gas networks. The oil-free design is particularly critical in ASU service because any hydrocarbon contamination would degrade the cryogenic separation efficiency and potentially damage downstream molecular sieve dryers.<\/p>\n

\"LW-10\/8<\/p>\n

VPSA Nitrogen Booster Stations<\/h3>\n

Vacuum Pressure Swing Adsorption (VPSA) nitrogen generators produce gaseous nitrogen at near-atmospheric pressure (0.05\u20130.10 MPa). The LW-10\/8 nitrogen booster<\/a> compresses this low-pressure product to 0.80 MPa for distribution to point-of-use applications. The oil-free compression path is essential in VPSA service because any hydrocarbon contamination would poison the carbon molecular sieve adsorbent, permanently degrading the nitrogen generator’s separation efficiency and requiring costly adsorbent replacement that can exceed $50,000 for a medium-scale unit. The LW-10\/8’s native oil-free certification protects this critical investment.<\/p>\n

Chemical Process Blanketing & Inerting<\/h3>\n

Chemical manufacturing facilities require large volumes of nitrogen for reactor blanketing, vessel inerting, and pipeline purging<\/strong> to prevent explosive vapor formation and oxidative degradation of sensitive products. The LW-10\/8’s 0.80 MPa discharge pressure provides adequate head to overcome pressure relief valve settings and maintain positive pressure in multiple reactors and storage vessels simultaneously. The continuous-duty rating ensures uninterrupted nitrogen availability during extended production campaigns that may run for months without shutdown. The oil-free design is mandatory in chemical applications where even trace oil contamination could catalyze unwanted side reactions or contaminate high-purity product streams.<\/p>\n

\"LW-10\/8<\/p>\n

Food Packaging & Modified Atmosphere Storage<\/h3>\n

Medium-scale food packaging facilities require a steady supply of high-purity nitrogen for modified atmosphere packaging (MAP)<\/strong>, controlled atmosphere storage, and nitrogen flushing of packaging lines. The LW-10\/8’s 10 m\u00b3\/min capacity can simultaneously supply multiple high-speed packaging machines, while its oil-free certification ensures compliance with FDA 21 CFR 173.310 (food-grade nitrogen) and EU Regulation 231\/2012. The absence of oil contamination eliminates the risk of off-flavors, rancidity, or product discoloration that can occur when lubricated compressors are used in food-contact applications, protecting brand reputation and consumer safety.<\/p>\n<\/div>\n

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Material & Construction<\/h2>\n

Every component of the LW-10\/8 is selected for compatibility with nitrogen service, corrosion resistance, and long-term mechanical integrity:<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n
Component<\/th>\nMaterial<\/th>\nSpecification<\/th>\n<\/tr>\n<\/thead>\n
Cylinder Block<\/td>\nGray Cast Iron<\/td>\nGG25 \/ HT250, integral water jackets<\/td>\n<\/tr>\n
Crankshaft<\/td>\nForged Alloy Steel<\/td>\n42CrMo4, Q&T, ISO 1940 G2.5 balanced<\/td>\n<\/tr>\n
Piston Rings<\/td>\nPTFE-Glass-Bronze Composite<\/td>\nSelf-lubricating, wear rate <0.05 mm\/1000h<\/td>\n<\/tr>\n
Rider Bands<\/td>\nPTFE Composite<\/td>\nPiston guidance, prevent cylinder scoring<\/td>\n<\/tr>\n
Valve Plates<\/td>\nStainless Steel<\/td>\nSS316, concentric ring spring-loaded design<\/td>\n<\/tr>\n
Connecting Rods<\/td>\nForged Steel with Babbitt Bearings<\/td>\nPrecision-machined, oil-lubricated big end<\/td>\n<\/tr>\n
Intercooler<\/td>\nCarbon Steel Shell \/ SS304 Tubes<\/td>\nASME VIII Div.1, 1.5\u00d7 hydrotest<\/td>\n<\/tr>\n
Aftercooler<\/td>\nCarbon Steel Shell \/ SS304 Tubes<\/td>\nFinned tube design, 32\u00b0C cooling water<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

All pressure-bearing components are designed and fabricated in accordance with ASME BPVC Section VIII Division 1<\/strong> or Chinese GB 150 standards. Every weld joint undergoes 100% radiographic inspection (RT) per ASME Section V, Article 2, and each completed vessel is subjected to a hydrostatic pressure test at 1.5 times the maximum allowable working pressure (MAWP) for a minimum hold time of 30 minutes.<\/p>\n

\"LW-10\/8<\/p>\n<\/div>\n

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Installation & Maintenance Guidelines<\/h2>\n

Foundation & Mounting Requirements<\/h3>\n

The LW-10\/8 weighs 1.80 tonnes and features a low center of gravity due to its compact design. A reinforced concrete inertia block of 4\u20135 tonnes<\/strong> is recommended, mounted on elastomeric vibration isolators (natural frequency 6\u20138 Hz). The two-row opposed-cylinder arrangement inherently cancels first-order inertial forces, minimizing vibration transmission to adjacent structures. Required clearances: 1.2 m on the non-drive side for valve maintenance, 1.0 m on the drive side for motor access, and 1.8 m overhead for crane access during major overhauls. The compact footprint allows installation in existing machinery rooms without structural modifications.<\/p>\n

Cooling Water System Specifications<\/h3>\n

Cooling water demand is approximately 15 m\u00b3\/h<\/strong> at an inlet temperature not exceeding 32\u00b0C. The water distribution circuit feeds the cylinder jackets, intercooler, and aftercooler in parallel. Acceptable water quality: pH 6.5\u20138.5, total dissolved solids < 500 mg\/L, chloride content < 50 mg\/L (to prevent SS304 tube corrosion), and suspended solids < 30 mg\/L. For sites with marginal water quality, a closed-loop cooling tower with side-stream filtration and chemical treatment is strongly recommended to prevent scale formation and maintain heat transfer efficiency.<\/p>\n

Preventive Maintenance Schedule<\/h3>\n
\n\n\n\n\n\n\n\n\n\n
Interval<\/th>\nService Item<\/th>\nAction Required<\/th>\n<\/tr>\n<\/thead>\n
Daily<\/td>\nOperational Inspection<\/td>\nCheck vibration levels, abnormal noise, cooling water flow, discharge temperature<\/td>\n<\/tr>\n
250 hours<\/td>\nValve Plate Inspection<\/td>\nRemove and inspect suction\/discharge valve plates for carbon deposits or cracking<\/td>\n<\/tr>\n
1,000 hours<\/td>\nPiston Ring Measurement<\/td>\nMeasure ring groove clearance; replace rings if clearance exceeds 0.25 mm<\/td>\n<\/tr>\n
4,000 hours<\/td>\nIntermediate Overhaul<\/td>\nReplace all piston rings, rider bands, and valve plate assemblies<\/td>\n<\/tr>\n
8,000 hours<\/td>\nMajor Overhaul<\/td>\nInspect crankshaft journals, measure bearing clearances, replace main bearings if >0.08 mm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

The oil-free design of the LW-10\/8 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 piston rings and rider bands<\/strong>, which typically achieve 4,000\u20136,000 hours of service life under clean nitrogen conditions. This maintenance simplicity translates to lower labor costs, reduced spare parts inventory, and higher equipment availability.<\/p>\n

\"LW-10\/8<\/p>\n<\/div>\n

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Compliance & Safety Certifications<\/h2>\n

The LW-10\/8 nitrogen compressor meets or exceeds the following international standards and regulatory requirements:<\/p>\n

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Pressure Equipment Directive<\/strong>
\nASME BPVC Section VIII Div.1, GB 150-2011, PED 2014\/68\/EU Module A<\/span><\/div>\n
Electrical & Machine Safety<\/strong>
\nIEC 60034-1 (IE3 efficiency), IEC 60204-1, ISO 12100 (machinery safety)<\/span><\/div>\n
Oil-Free Air Quality<\/strong>
\nISO 8573-1 Class 0 (Oil Content), independently tested by T\u00dcV Rheinland<\/span><\/div>\n
Quality & Environmental<\/strong>
\nISO 9001:2015 (Quality Management), ISO 14001:2015 (Environmental Management)<\/span><\/div>\n<\/div>\n
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\u26a0\ufe0f Critical Safety Advisory<\/strong><\/p>\n

Nitrogen is an odorless, colorless asphyxiant gas. All LW-10\/8 installations must incorporate continuous oxygen deficiency monitoring in the compressor room and adjacent areas. Ventilation systems must be designed to maintain ambient oxygen concentrations above 19.5% volume per OSHA 29 CFR 1910.146 (Permit-Required Confined Spaces). Emergency shutdown interlocks should activate at 19.5% O\u2082 (alarm) and trigger automatic compressor isolation at 18.0% O\u2082 (hard shutdown). Personnel entry procedures must include portable oxygen monitors and a buddy system protocol.<\/p>\n<\/div>\n

\"LW-10\/8<\/p>\n<\/div>\n

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Performance & Efficiency Analysis<\/h2>\n

The LW-10\/8 achieves a specific power consumption of approximately 6.50 kW per m\u00b3\/min<\/strong> of nitrogen delivered at 0.80 MPa discharge pressure. This efficiency metric positions the unit competitively within the 8\u201315 m\u00b3\/min oil-free piston compressor segment. For comparison, oil-lubricated screw compressors in similar applications typically consume 7.0\u20137.8 kW\/m\u00b3\/min, while legacy single-stage piston designs may exceed 8.5 kW\/m\u00b3\/min.<\/p>\n

Over a standard 8,000-hour annual operating cycle, the LW-10\/8’s efficiency advantage yields approximately 40,000\u2013104,000 kWh of annual energy savings<\/strong> compared to less efficient alternatives. At an average industrial electricity tariff of $0.08\/kWh, this represents $3,200\u2013$8,320 in direct operating cost reduction per year. When combined with the elimination of oil-related consumables (lubricating oil, filter elements, separator cartridges, waste oil disposal), the total cost of ownership for nitrogen compression<\/a> is reduced by an estimated 20\u201330% over a 10-year operational life.<\/p>\n

The absence of oil in the compression path also eliminates the energy penalty associated with downstream oil-removal equipment. A typical oil-lubricated compressor of this size requires coalescing filters, activated carbon adsorbers, and monitoring instrumentation that collectively consume 3\u20135% of the compressor’s power output. The LW-10\/8’s oil-free design removes this parasitic load entirely, further improving the effective system efficiency.<\/p>\n<\/div>\n

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Customization & OEM Capabilities<\/h2>\n

We offer comprehensive customization options to adapt the LW-10\/8 to specific site conditions, integration requirements, and end-user specifications:<\/p>\n