LW-5.3/16 Nitrogen Compressor – High-Pressure Oil-Free N2 Booster for Demanding Industrial Applications

Engineered to deliver 5.3 m³/min at 1.60 MPa discharge pressure, the LW-5.3/16 is a two-stage, two-row oil-free piston nitrogen compressor purpose-built for high-pressure nitrogen injection, gas cylinder filling, and specialized petrochemical inerting operations. Zero oil contamination, compact footprint, and optimized for medium-duty industrial service at elevated pressure.

Огляд продукту

The LW-5.3/16 nitrogen compressor occupies a specialized niche within our oil-free piston compressor portfolio, engineered for applications that demand both moderate flow capacity and significantly elevated discharge pressure. With a rated capacity of 5.3 m³/min and an impressive 1.60 MPa discharge pressure, this unit bridges the gap between conventional low-pressure nitrogen boosters and ultra-high-pressure gas filling systems.

What distinguishes the LW-5.3/16 is its completely oil-free compression mechanism 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 high-purity nitrogen cylinder filling, pharmaceutical-grade inerting, and electronics manufacturing where even trace oil content would compromise product integrity. The native oil-free certification achieves ISO 8573-1 Class 0 compliance without requiring additional downstream purification equipment.

Its двоступеневий, дворядний (二列二级) configuration is thermodynamically optimized for the high pressure ratio required to reach 1.60 MPa. The staged compression approach divides the total pressure burden between a low-pressure cylinder and a high-pressure cylinder, with an inter-stage cooler removing the heat of compression to maintain gas temperatures within safe limits. This thermal management is critical for preserving the integrity of the PTFE sealing elements under the demanding conditions of high-pressure operation. The compact dimensions—1947 × 1900 × 2580 mm—and manageable weight of 3.97 tonnes make the LW-5.3/16 suitable for installations where space is at a premium.

Technical Specifications – LW-5.3/16

* Усі характеристики розраховані за стандартних еталонних умов (ISO 1217, Додаток C). Фактична продуктивність може відрізнятися залежно від висоти над рівнем моря, температури навколишнього середовища та умов на вході.

Основні характеристики та інженерні переваги

1. High-Pressure Oil-Free PTFE Sealing Technology

The LW-5.3/16 employs a specialized self-lubricating piston ring and rider band system manufactured from high-performance PTFE composites reinforced with glass fiber and bronze particulates. This material formulation is specifically engineered for high-pressure service, achieving a coefficient of friction below 0.08 without any external hydrocarbon lubrication. The rings are dimensionally stable at temperatures up to 180°C, which is essential for managing the thermal loads associated with 1.60 MPa discharge pressure. For operators requiring high-purity nitrogen, this design delivers native ISO 8573-1 Class 0 compliance, eliminating the need for costly downstream oil-filtration systems.

2. Two-Stage Compression for Extreme Pressure Ratios

The two-stage compression architecture is indispensable for achieving the 1.60 MPa discharge pressure from typical inlet conditions of 0.05–0.10 MPa. By dividing the overall pressure ratio between a low-pressure cylinder and a high-pressure cylinder, the LW-5.3/16 maintains manageable discharge temperatures per stage. A dedicated high-efficiency shell-and-tube intercooler between stages removes the heat of compression, keeping gas temperatures below 160°C even at maximum continuous load. This thermal management strategy is critical for preserving PTFE ring integrity under high-pressure conditions and extends valve plate service life by approximately 35% compared to single-stage designs attempting equivalent pressure ratios.

3. Compact Design with Robust Construction

Despite its high-pressure capability, the LW-5.3/16 maintains a remarkably compact footprint of 1947 × 1900 × 2580 mm. This dimensional efficiency is achieved through a vertically oriented crankcase design that minimizes longitudinal space requirements while providing adequate maintenance access. The main frame is cast from GG25 gray cast iron with integral cooling water passages, and the two-row opposed-cylinder arrangement provides natural first-order force cancellation. At 3.97 tonnes, the unit can be transported and positioned using standard forklift equipment, eliminating the need for specialized rigging during installation or relocation.

4. Standard 380V Direct-On-Line Motor Drive

The LW-5.3/16 is powered by a 55 kW, 380V, 50Hz three-phase induction motor 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 or step-down transformers. This electrical simplicity reduces both capital expenditure and commissioning complexity, making the LW-5.3/16 an attractive option for facilities upgrading from high-pressure bottled nitrogen or membrane separation systems to on-site compression.

Сценарії застосування

High-Pressure Nitrogen Cylinder Filling Stations

The LW-5.3/16 is ideally suited for nitrogen cylinder filling operations where high-pressure gas must be compressed into standard industrial cylinders at 15–20 MPa. The 1.60 MPa discharge pressure serves as the primary booster stage, feeding a downstream high-pressure compressor or booster pump that achieves the final cylinder charging pressure. The oil-free design is mandatory in cylinder filling applications because any oil contamination would compromise the purity of nitrogen delivered to end-users in food processing, medical, and electronics industries. The 5.3 m³/min capacity supports filling rates of 20–30 cylinders per hour, making it suitable for medium-scale filling stations serving regional industrial gas markets.

Specialized Petrochemical High-Pressure Inerting

In petrochemical operations involving high-pressure reactors, catalyst regeneration systems, and hydrocracking units, nitrogen is required at elevated pressures for reactor inerting, catalyst preservation, and emergency depressurization. The LW-5.3/16 high-pressure nitrogen compressor delivers the 1.60 MPa pressure necessary to overcome reactor operating pressures and maintain positive inert gas flow. The oil-free certification is critical in these applications because any hydrocarbon contamination would poison precious metal catalysts, degrade product quality, and create safety hazards in hydrogen-rich process environments.

Pharmaceutical High-Pressure Inerting & Blanketing

Pharmaceutical manufacturing facilities require high-purity nitrogen at elevated pressures for reactor blanketing, powder conveying, and sterile packaging operations. The LW-5.3/16’s 1.60 MPa discharge pressure is sufficient to drive pneumatic conveying systems that transport active pharmaceutical ingredients (APIs) between process vessels without contamination risk. The oil-free design ensures compliance with FDA 21 CFR 211.72 (equipment cleaning and maintenance) and EU GMP Annex 1 (manufacture of sterile medicinal products), where any oil contamination would render batches unfit for human use.

Electronics High-Pressure Process Gas Supply

Semiconductor fabrication facilities and electronics assembly plants require high-pressure nitrogen for wafer handling, chemical vapor deposition (CVD) chamber purging, and lead-free soldering operations. The LW-5.3/16’s 1.60 MPa pressure supports the high-flow pneumatic actuators and process gas manifolds used in advanced packaging lines. The oil-free certification is non-negotiable in electronics applications because even trace oil contamination can cause solder joint defects, delamination of conformal coatings, and catastrophic failure of sensitive optical components.

Матеріал та конструкція

The LW-5.3/16 is constructed from premium materials selected for high-pressure nitrogen compatibility, thermal stability, and extended service life:

Усі компоненти, що несуть тиск, розроблені та виготовлені відповідно до ASME BPVC Розділ VIII Розділ 1 or Chinese GB 150 standards. Every weld joint undergoes 100% radiographic inspection (RT) per ASME Section V, Article 2, and each completed pressure vessel is subjected to a hydrostatic pressure test at 1.5 times the maximum allowable working pressure (MAWP) for a minimum hold period of 30 minutes.

Інструкції з встановлення та обслуговування

Вимоги до фундаменту та простору

The LW-5.3/16 has a dry weight of 3.97 tonnes and a low center of gravity due to its compact vertical design. A reinforced concrete pad of 5–6 tonnes is sufficient for stable operation, mounted on elastomeric vibration isolators (natural frequency 8–12 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.

Технічні характеристики охолоджувальної води

Потреба у воді для охолодження становить приблизно 15 m³/h at an inlet temperature not exceeding 32°C. The water distribution circuit feeds the cylinder jackets and intercooler in parallel. Acceptable water quality: pH 6.5–8.5, total hardness < 300 mg/L as CaCO₃, chloride < 50 mg/L, suspended solids < 30 mg/L. For installations without reliable municipal water supply, a compact closed-loop cooling tower with a 0.5 m³ buffer tank is recommended.

Графік профілактичного обслуговування

The oil-free design of the LW-5.3/16 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 separator cartridges to monitor. The only consumable wear items are the Поршневі кільця та бандажі з PTFE, which typically achieve 4,000–6,000 hours of service life under clean nitrogen conditions.

Сертифікати відповідності та безпеки

The LW-5.3/16 nitrogen compressor meets the following international standards and regulatory requirements:

Аналіз продуктивності та ефективності

The LW-5.3/16 achieves a specific power consumption of approximately 10.38 kW per m³/min of nitrogen delivered at 1.60 MPa discharge pressure. While this specific power is higher than low-pressure models due to the extreme pressure ratio, it remains competitive within the high-pressure oil-free piston compressor segment. For comparison, oil-lubricated alternatives in this pressure class typically consume 11.0–12.5 kW/m³/min, and diaphragm compressors (often selected for oil-free high-pressure service) can exceed 14 kW/m³/min.

Over an 8,000-hour annual operating cycle, the LW-5.3/16’s efficiency advantage versus less efficient alternatives yields approximately 25,000–55,000 kWh of energy savings per year. At $0.08/kWh, this represents $2,000–$4,400 in annual electricity cost reduction. However, the primary economic driver for LW-5.3/16 selection is typically the ліквідація витратних матеріалів, пов'язаних з нафтою, та обладнання для очищення нафти після обробки а не незначну економію енергії.

The загальна вартість володіння для стиснення азоту під високим тиском is dominated by maintenance labor and consumables. The LW-5.3/16’s oil-free design eliminates oil changes ($300–600/year), filter replacements ($150–300/year), separator cartridge changes ($400–800/year), and oil analysis ($100–200/year), delivering total consumable savings of $950–$1,900 annually compared to lubricated alternatives.

Можливості налаштування та OEM

We provide flexible customization options to adapt the LW-5.3/16 to specific installation constraints and end-user requirements:

• Комплекти, що монтуються на полозках: Попередньо зібрані компресор, двигун, охолоджувач і панель керування на сталевій рамі з кишенями для навантажувача та вантажними вушками. Польовий монтаж зводиться лише до підключення електромережі та охолоджувальної води.
• Мобільні причіпні установки: The LW-5.3/16 can be mounted on a road-legal trailer with integrated diesel generator and cooling system, creating a fully mobile high-pressure nitrogen supply unit for construction sites, pipeline maintenance, and emergency response.
• ПЛК та дистанційний моніторинг: Додатковий ПЛК Siemens LOGO! або S7-1200 із 7-дюймовим сенсорним екраном HMI, підключенням до Ethernet та SMS/електронними сповіщеннями про тривогу. Сумісний з Modbus TCP/IP для інтеграції SCADA.
• Акустичні корпуси: Compact IP54-rated sound enclosure reducing noise from 84 dB(A) to 68 dB(A) at 1 meter, suitable for indoor installations in noise-sensitive environments.
• OEM та приватна торгова марка: Індивідуальні схеми фарбування, фірмові таблички та локалізовані пакети документації для дистриб'юторів газового обладнання та системних інтеграторів.

Користувацькі конфігурації доступні з Мінімальна кількість замовлення 1 одиницяІнженерні пропозиції зазвичай доставляються протягом 3–5 робочих днів. Стандартний термін доставки становить 10–12 тижнів; для відповідних замовлень доступна прискорена доставка протягом 8 тижнів.

Case Study: Pharmaceutical Cylinder Filling Operation

Клієнт: A pharmaceutical gas supplier in Southeast Asia specializing in medical-grade nitrogen

Виклик: The client’s existing oil-lubricated high-pressure nitrogen compressor (10 years in service) was experiencing progressive oil carryover into the nitrogen product during cylinder filling operations. Oil contamination levels reached 1.5 mg/m³, far exceeding the 0.1 mg/m³ limit required for medical-grade nitrogen certification. The oil was also contaminating the cylinder filling manifold, requiring monthly cleaning and replacement of O-rings and seals.

Рішення: We supplied an LW-5.3/16 oil-free nitrogen compressor as the primary booster, feeding a downstream high-pressure booster pump for final cylinder charging. The unit was mounted on a custom skid with integrated intercooler, aftercooler, and a Siemens LOGO! PLC control panel. A 1 m³ surge vessel was installed upstream to buffer pressure fluctuations from the membrane nitrogen generator supplying the compressor.

Results After 18 Months:

• Вміст азоту в олії: Зменшено з 1,5 мг/м³ до <0,01 мг/м³, achieving ISO 8573-1 Class 0 and medical-grade certification
• Cylinder filling manifold cleaning: Виключено, reducing labor costs by $8,000/year
• O-ring and seal replacement: Reduced by 90%, saving $3,500/year in consumables
• Maintenance burden: One scheduled service per year versus quarterly overhauls
• Customer complaints: Zero since commissioning, with nitrogen purity consistently exceeding specifications

“The LW-5.3/16 has been a game-changer for our medical nitrogen business. We no longer worry about oil contamination, and our customers have noticed the improved consistency in gas quality. The payback period was just over 2 years.” — Operations Manager, Pharmaceutical Gas Supplier

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