{"id":571,"date":"2026-07-20T06:59:25","date_gmt":"2026-07-20T06:59:25","guid":{"rendered":"https:\/\/n2-compressor.com\/?post_type=product&p=571"},"modified":"2026-07-20T06:59:26","modified_gmt":"2026-07-20T06:59:26","slug":"lw-25-16-nitrogen-compressor","status":"publish","type":"product","link":"https:\/\/n2-compressor.com\/pl\/produkt\/lw-25-16-nitrogen-compressor\/","title":{"rendered":"LW-25\/16 Nitrogen Compressor \u2013 High-Pressure Oil-Free N2 Booster for 1.60 MPa Industrial Applications"},"content":{"rendered":"
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LW-25\/16 Nitrogen Compressor \u2013 High-Pressure Oil-Free N2 Booster for 1.60 MPa Industrial Applications<\/h1>\n

Engineered to deliver 25 m\u00b3\/min at 1.60 MPa discharge pressure, the LW-25\/16 is a two-stage, two-row oil-free piston nitrogen compressor designed for high-pressure nitrogen injection, pipeline boosting, and demanding petrochemical process applications. Zero lubricant contamination, continuous-duty rated, and built for 24\/7 operation at elevated pressure.<\/p>\n

Popro\u015b o wycen\u0119<\/a>
\nView N2 Compressor Series<\/a><\/div>\n

\"LW-25\/16<\/p>\n<\/div>\n

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Product Overview<\/h2>\n

Ten LW-25\/16 nitrogen compressor<\/strong> occupies a specialized position within our oil-free piston compressor portfolio, bridging the gap between medium-pressure nitrogen distribution and high-pressure process applications. With a rated capacity of 25 m\u00b3\/min<\/strong> and an exceptional 1.60 MPa discharge pressure<\/strong>, this unit addresses the most demanding nitrogen compression requirements in industrial gas infrastructure where both substantial flow and elevated pressure are simultaneously required.<\/p>\n

What distinguishes the LW-25\/16 from conventional high-pressure alternatives is its fully oil-free compression mechanism<\/strong>. The piston rings and rider bands are fabricated from advanced self-lubricating PTFE composite materials specifically formulated for high-pressure service. These components operate without any hydrocarbon lubricants, ensuring the nitrogen stream remains completely free of oil contamination even at the elevated temperatures and pressures associated with 1.60 MPa discharge. This intrinsic oil-free characteristic delivers ISO 8573-1 Class 0 certification<\/strong> natively, eliminating the need for costly downstream oil-removal systems that would otherwise be mandatory in high-pressure applications.<\/p>\n

The compressor employs a two-stage, two-row (\u4e8c\u5217\u4e8c\u7ea7)<\/strong> configuration that is essential for managing the extreme pressure ratio required to achieve 1.60 MPa discharge from near-atmospheric inlet conditions. The staged compression distributes thermal load across two cylinders, with an independent high-efficiency intercooler between stages maintaining gas temperatures within safe operating limits. The robust cast-iron frame and precision-forged crankshaft are engineered to withstand the substantial mechanical forces generated by high-pressure operation, with a rated service life exceeding 100,000 hours<\/strong> under standard maintenance protocols.<\/p>\n

\"LW-25\/16<\/p>\n<\/div>\n

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Technical Specifications \u2013 LW-25\/16<\/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
Model<\/td>\nLW-25\/16<\/td>\n\u2013<\/td>\n<\/tr>\n
Wz\u00f3r<\/td>\nTwo-stage, Two-row (\u4e8c\u5217\u4e8c\u7ea7)<\/td>\n\u2013<\/td>\n<\/tr>\n
Pojemno\u015b\u0107<\/td>\n25<\/td>\nm\u00b3\/min<\/td>\n<\/tr>\n
Ci\u015bnienie wylotowe<\/td>\n1.60<\/td>\nMPa<\/td>\n<\/tr>\n
Compressor Size (L \u00d7 W \u00d7 H)<\/td>\n2500 \u00d7 1600 \u00d7 2700<\/td>\nmm<\/td>\n<\/tr>\n
Waga<\/td>\n4.50<\/td>\nt<\/td>\n<\/tr>\n
Moc<\/td>\n200<\/td>\nkW<\/td>\n<\/tr>\n
Wolta\u017c<\/td>\n380 \/ 6k or 10k<\/td>\nV<\/td>\n<\/tr>\n
Medium gazowe<\/td>\nNitrogen (N\u2082)<\/td>\n\u2013<\/td>\n<\/tr>\n
Lubrication<\/td>\nBez oleju<\/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. High-Pressure Oil-Free PTFE Sealing Technology<\/h3>\n

The LW-25\/16 utilizes a proprietary high-pressure self-lubricating piston ring and rider band system<\/strong> manufactured from advanced PTFE composites reinforced with high-strength glass fiber and bronze particulates. This material formulation is specifically engineered for the extreme pressure differentials and elevated temperatures encountered at 1.60 MPa discharge pressure. The rings achieve a coefficient of friction below 0.06 without any external hydrocarbon lubrication, completely eliminating oil contamination risk. For high-pressure nitrogen users in petrochemical, pharmaceutical, and specialty gas applications, this delivers native ISO 8573-1 Class 0 compliance<\/strong> without the complexity, cost, and reliability concerns of downstream oil-filtration systems operating at elevated pressure.<\/p>\n

2. Two-Stage Compression for Extreme Pressure Ratios<\/h3>\n

Ten two-stage compression architecture<\/strong> is absolutely critical for achieving 1.60 MPa discharge from atmospheric inlet conditions, representing an overall pressure ratio of approximately 16:1. By dividing this extreme ratio between a low-pressure cylinder and a high-pressure cylinder, the LW-25\/16 limits the discharge temperature of each stage to below 160\u00b0C, preserving the structural integrity of the PTFE sealing elements. A high-efficiency shell-and-tube intercooler between stages removes the substantial heat of compression, with cooling water flow designed to maintain inter-stage temperatures below 45\u00b0C even at maximum continuous load. This thermal management extends valve plate life by approximately 50% compared to single-stage designs attempting equivalent pressure ratios.<\/p>\n

3. Reinforced Heavy-Duty Frame for High-Pressure Operation<\/h3>\n

The main frame is cast from GG30 gray cast iron<\/strong> (upgraded from the GG25 used in lower-pressure models) with thicker wall sections and reinforced bearing pedestals to withstand the substantially higher mechanical loads generated by 1.60 MPa discharge pressure. The two-row opposed-cylinder arrangement<\/strong> provides natural first-order force cancellation, reducing unbalanced inertia forces transmitted to the foundation by over 80% compared to single-row designs. This mechanical advantage is particularly important for high-pressure compressors where the peak cylinder forces are significantly elevated. The forged steel crankshaft is dynamically balanced to ISO 1940 G2.5 standards and features enlarged bearing journals to accommodate the higher bearing loads.<\/p>\n

4. Flexible Voltage Configuration for Industrial Integration<\/h3>\n

The LW-25\/16 is available with a 200 kW drive motor<\/strong> in three voltage configurations: 380V for facilities with low-voltage distribution infrastructure, or 6kV\/10kV for direct integration into medium-voltage industrial networks. The 380V option is ideal for smaller installations or retrofit projects where medium-voltage infrastructure is not available. The 6kV and 10kV options eliminate the need for step-down transformers in large industrial facilities, reducing electrical infrastructure costs and improving overall energy efficiency. All motor configurations conform to IEC 60034-1 efficiency class IE3.<\/p>\n

\"LW-25\/16<\/p>\n<\/div>\n

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Application Scenarios<\/h2>\n

High-Pressure Nitrogen Pipeline Boosting<\/h3>\n

In industrial gas distribution networks spanning multiple facilities or large plant sites, the LW-25\/16 serves as a high-pressure nitrogen booster station<\/strong> to overcome pipeline friction losses and maintain adequate pressure at remote consumption points. Its 1.60 MPa discharge pressure provides sufficient head for distribution over distances exceeding 5 km, making it ideal for centralized nitrogen supply to multiple process units, storage tank farms, and remote loading stations. The 25 m\u00b3\/min capacity supports medium-scale industrial complexes with multiple simultaneous nitrogen consumers. The oil-free design is critical in pipeline applications because any oil contamination would propagate throughout the entire distribution network, potentially affecting all downstream consumers.<\/p>\n

\"LW-25\/16<\/p>\n

Petrochemical Reactor Inerting & Catalyst Preservation<\/h3>\n

Petrochemical reactors, catalytic crackers, and hydroprocessing units require high-pressure nitrogen for reactor inerting during startup and shutdown, catalyst bed preservation during standby periods, and emergency depressurization<\/strong>. The LW-25\/16 high-pressure nitrogen compressor<\/a> delivers the 1.60 MPa pressure required to overcome reactor system pressures and inject nitrogen directly into process vessels. The oil-free design is absolutely mandatory in these applications because oil contamination would poison expensive catalyst beds, permanently degrading catalytic activity and requiring costly catalyst replacement or regeneration.<\/p>\n

Nitrogen Gas Filling & Cylinder Charging Stations<\/h3>\n

Industrial gas filling stations and cylinder charging facilities require high-pressure nitrogen compressors to fill standard gas cylinders (typically 15 MPa working pressure) and tube trailers (up to 20 MPa). While the LW-25\/16’s 1.60 MPa discharge pressure does not directly achieve cylinder filling pressure, it serves as an intermediate booster<\/strong> in multi-stage compression trains, compressing nitrogen from atmospheric or low-pressure sources to the suction pressure of high-pressure diaphragm or piston compressors. The oil-free design ensures that nitrogen entering the high-pressure stage is completely uncontaminated, preventing oil accumulation in high-pressure cylinders and tube trailers that could compromise gas purity and create safety hazards.<\/p>\n

\"LW-25\/16<\/p>\n

Food & Beverage High-Pressure Nitrogen Injection<\/h3>\n

Large-scale food and beverage processing facilities utilize high-pressure nitrogen for product dispensing systems, pressurized packaging, and controlled atmosphere storage at elevated pressure<\/strong>. The LW-25\/16’s 1.60 MPa discharge pressure is sufficient for direct injection into pressurized product tanks and dispensing systems without intermediate boosting. The oil-free certification ensures compliance with FDA 21 CFR 173.310 and EU Regulation 231\/2012 for food-contact nitrogen. The 25 m\u00b3\/min capacity supports high-throughput production lines where multiple dispensing stations operate simultaneously.<\/p>\n<\/div>\n

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Material & Construction<\/h2>\n

The LW-25\/16 is constructed from premium materials specifically selected for high-pressure nitrogen service, thermal stress resistance, and extended operational life:<\/p>\n

\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>\nGG30 \/ HT300, reinforced wall sections, integral cooling jackets<\/td>\n<\/tr>\n
Crankshaft<\/td>\nForged Alloy Steel<\/td>\n42CrMo4, Q&T, enlarged bearing journals, ISO 1940 G2.5 balanced<\/td>\n<\/tr>\n
Piston Rings<\/td>\nHigh-Pressure PTFE Composite<\/td>\nSelf-lubricating, high-temp rated to 200\u00b0C, wear rate <0.04 mm\/1000h<\/td>\n<\/tr>\n
Rider Bands<\/td>\nPTFE Composite<\/td>\nPiston guidance, anti-scuffing, high-pressure rated<\/td>\n<\/tr>\n
Valve Plates<\/td>\nStal nierdzewna<\/td>\nSS316, high-pressure concentric ring spring-loaded design<\/td>\n<\/tr>\n
Connecting Rods<\/td>\nForged Steel with Babbitt Bearings<\/td>\nReinforced big end, oil-lubricated, precision-machined<\/td>\n<\/tr>\n
Intercooler<\/td>\nCarbon Steel Shell \/ SS316 Tubes<\/td>\nHigh-pressure rated, ASME VIII Div.1, 1.5\u00d7 hydrotest<\/td>\n<\/tr>\n
Aftercooler<\/td>\nCarbon Steel Shell \/ SS316 Tubes<\/td>\nHigh-pressure finned tube, 32\u00b0C cooling water rated<\/td>\n<\/tr>\n
High-Pressure Piping<\/td>\nSeamless Carbon Steel<\/td>\nASTM A106 Gr.B, Schedule 80, 100% RT inspected<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

All pressure-bearing components are designed and fabricated in strict accordance with ASME BPVC Section VIII Division 1<\/strong> or Chinese GB 150 standards, with additional safety margins for high-pressure service. 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. High-pressure piping is 100% pneumatically tested at 1.1\u00d7 MAWP after hydrostatic testing.<\/p>\n

\"LW-25\/16<\/p>\n<\/div>\n

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Installation & Maintenance Guidelines<\/h2>\n

Foundation & Structural Requirements<\/h3>\n

The LW-25\/16 has a dry weight of 4.50 tonnes and a center of gravity approximately 950 mm above the baseplate. Due to the substantially higher mechanical forces generated by 1.60 MPa discharge pressure, a reinforced concrete inertia block of 9\u201312 tonnes<\/strong> is required. The block must be mounted on heavy-duty vibration isolators (natural frequency 5\u20137 Hz) capable of accommodating the elevated dynamic loads. Foundation design must account for the peak cylinder forces, which are significantly higher than those of lower-pressure compressors of equivalent capacity. Minimum clearance requirements: 1.5 m on the non-drive side for valve access, 1.2 m on the drive side for motor maintenance, and 2.0 m overhead for crane access during major overhauls.<\/p>\n

Cooling Water System Design<\/h3>\n

Cooling water demand is approximately 28 m\u00b3\/h<\/strong> at an inlet temperature not exceeding 32\u00b0C. The high-pressure intercooler and aftercooler require particularly effective cooling to manage the substantial heat of compression at 1.60 MPa. Water quality specifications: pH 6.5\u20138.5, total dissolved solids < 400 mg\/L, chloride content < 40 mg\/L (critical for SS316 tube corrosion prevention), suspended solids < 25 mg\/L, and total hardness < 250 mg\/L as CaCO\u2083. A closed-loop cooling tower with side-stream filtration and chemical treatment is strongly recommended for all installations to ensure consistent water quality and prevent scale formation in high-pressure heat exchanger tubes.<\/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 and pressure<\/td>\n<\/tr>\n
200 hours<\/td>\nValve Plate Inspection<\/td>\nRemove and inspect suction\/discharge valves for carbon deposits, spring fatigue, or cracking<\/td>\n<\/tr>\n
800 hours<\/td>\nPiston Ring Wear Assessment<\/td>\nMeasure ring groove clearance; replace rings if clearance exceeds 0.20 mm<\/td>\n<\/tr>\n
3,500 hours<\/td>\nIntermediate Overhaul<\/td>\nReplace all piston rings, rider bands, and valve plate assemblies<\/td>\n<\/tr>\n
7,000 hours<\/td>\nMajor Overhaul<\/td>\nInspect crankshaft journals, measure main bearing clearances, replace bearings if >0.06 mm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

The oil-free design of the LW-25\/16 significantly reduces maintenance complexity compared to lubricated high-pressure alternatives. There are no oil changes to schedule, no lubricating oil samples to analyze, no oil filter elements to replace, and no high-pressure oil separator cartridges to monitor. The primary consumable wear items are the PTFE piston rings and rider bands<\/strong>, which typically achieve 3,500\u20135,000 hours of service life under clean nitrogen conditions at high pressure. Valve plate assemblies generally achieve 2,000\u20133,500 hours before requiring refurbishment in high-pressure service.<\/p>\n

\"LW-25\/16<\/p>\n<\/div>\n

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Compliance & Safety Certifications<\/h2>\n

The LW-25\/16 nitrogen compressor is designed, manufactured, and tested to meet or exceed the following international standards and regulatory frameworks:<\/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 (Category III)<\/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
\u26a0\ufe0f Critical Safety Advisory<\/strong><\/p>\n

Nitrogen is classified as a simple asphyxiant gas. All LW-25\/16 installations must incorporate continuous oxygen deficiency monitoring in the compressor room and all adjacent areas where high-pressure nitrogen leakage could accumulate. Ventilation systems must be engineered to maintain ambient oxygen concentrations above 19.5% volume per OSHA 29 CFR 1910.146. Emergency shutdown interlocks should activate at 19.5% O\u2082 (alarm) and trigger automatic compressor isolation at 18.0% O\u2082 (hard shutdown). High-pressure nitrogen systems require additional safety measures including pressure relief valves, rupture discs, and automatic isolation valves on the discharge line. Personnel entry procedures into enclosed compressor rooms must include portable oxygen monitors and a buddy-system protocol. All high-pressure piping must be protected from mechanical damage and clearly labeled.<\/p>\n<\/div>\n

\"LW-25\/16<\/p>\n<\/div>\n

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Performance & Efficiency Analysis<\/h2>\n

The LW-25\/16 achieves a specific power consumption of approximately 8.00 kW per m\u00b3\/min<\/strong> of nitrogen delivered at 1.60 MPa discharge pressure. This efficiency metric reflects the thermodynamic challenges inherent in compressing to elevated pressure ratios, yet remains competitive within the high-pressure oil-free piston compressor segment. For comparison, oil-lubricated screw compressors operating at equivalent pressure ratios typically consume 8.5\u20139.5 kW\/m\u00b3\/min, while high-pressure diaphragm compressors (often selected for oil-free applications) can exceed 12 kW\/m\u00b3\/min.<\/p>\n

Over a standard 8,000-hour annual operating schedule, the LW-25\/16’s efficiency advantage versus less efficient alternatives yields approximately 100,000\u2013240,000 kWh of annual energy savings<\/strong>. At an average industrial electricity tariff of $0.08\/kWh, this represents $8,000\u2013$19,200 in direct operating cost reduction per year. However, the primary economic driver for LW-25\/16 selection is typically the elimination of oil-related consumables and downstream purification equipment<\/strong> rather than marginal energy savings.<\/p>\n

Ten total cost of ownership for high-pressure nitrogen compression<\/a> is further reduced by the absence of oil in the compression path. A typical oil-lubricated high-pressure compressor of this size requires coalescing filters, activated carbon adsorbers, oil monitoring instrumentation, and periodic oil changes that collectively add $15,000\u2013$25,000 in annual operating costs. The LW-25\/16’s oil-free design eliminates these expenses entirely while simultaneously improving reliability by removing the most common failure mode in high-pressure compressors: oil system contamination and degradation.<\/p>\n<\/div>\n

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Customization & OEM Capabilities<\/h2>\n

We offer comprehensive customization options to adapt the LW-25\/16 to specific site conditions, integration requirements, and end-user specifications:<\/p>\n