{"id":565,"date":"2026-07-20T06:25:20","date_gmt":"2026-07-20T06:25:20","guid":{"rendered":"https:\/\/n2-compressor.com\/?post_type=product&p=565"},"modified":"2026-07-20T06:25:20","modified_gmt":"2026-07-20T06:25:20","slug":"lw-25-10-nitrogen-compressor","status":"publish","type":"product","link":"https:\/\/n2-compressor.com\/uk\/product\/lw-25-10-nitrogen-compressor\/","title":{"rendered":"LW-25\/10 Nitrogen Compressor \u2013 High-Pressure Oil-Free N2 Booster for 1.00 MPa Industrial Applications"},"content":{"rendered":"
\n

<\/p>\n

\n

LW-25\/10 Nitrogen Compressor \u2013 High-Pressure Oil-Free N2 Booster for 1.00 MPa Industrial Applications<\/h1>\n

Engineered to deliver 25 m\u00b3\/min at 1.00 MPa discharge pressure, the LW-25\/10 is a two-stage, two-row oil-free piston nitrogen compressor purpose-built for high-pressure nitrogen injection, pipeline boosting, and demanding petrochemical process applications. Zero lubricant contamination, continuous-duty rated, and optimized for 24\/7 industrial operation at elevated pressure.<\/p>\n

\u0417\u0430\u043f\u0438\u0442 \u0446\u0456\u043d\u043e\u0432\u043e\u0457 \u043f\u0440\u043e\u043f\u043e\u0437\u0438\u0446\u0456\u0457<\/a>
\nView N2 Compressor Series<\/a><\/div>\n

\"LW-25\/10<\/p>\n<\/div>\n

<\/p>\n

\n

\u041e\u0433\u043b\u044f\u0434 \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u0443<\/h2>\n

The LW-25\/10 nitrogen compressor<\/strong> represents a specialized high-pressure solution within our oil-free piston compressor portfolio, engineered for applications where both substantial flow and elevated discharge pressure are non-negotiable requirements. With a rated capacity of 25 m\u00b3\/min<\/strong> and an exceptional 1.00 MPa discharge pressure<\/strong>, this unit occupies a unique position at the intersection of high-flow and high-pressure nitrogen compression.<\/p>\n

What distinguishes the LW-25\/10 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 that operate without any hydrocarbon lubricants, ensuring the nitrogen stream remains completely free of oil contamination. This intrinsic oil-free characteristic delivers ISO 8573-1 Class 0 certification<\/strong> natively, making the unit immediately suitable for the most demanding applications including food-grade nitrogen, pharmaceutical process gas, semiconductor fabrication, and petrochemical reactor inerting without additional downstream purification.<\/p>\n

The compressor employs a two-stage, two-row (\u4e8c\u5217\u4e8c\u7ea7)<\/strong> configuration that carefully manages the high pressure ratio required for 1.00 MPa discharge. By dividing the compression work across two cylinders with an optimized inter-stage pressure, the LW-25\/10 maintains thermal stability and preserves the integrity of the PTFE sealing elements even under sustained maximum-load operation. The robust cast-iron frame and precision-balanced forged steel crankshaft are rated for a minimum service life of 120,000 hours<\/strong> under standard maintenance protocols.<\/p>\n

\"LW-25\/10<\/p>\n<\/div>\n

<\/p>\n

\n

Technical Specifications \u2013 LW-25\/10<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u041f\u0430\u0440\u0430\u043c\u0435\u0442\u0440<\/th>\nValue<\/th>\nUnit<\/th>\n<\/tr>\n<\/thead>\n
\u041c\u043e\u0434\u0435\u043b\u044c<\/td>\nLW-25\/10<\/td>\n\u2013<\/td>\n<\/tr>\n
\u0412\u0456\u0437\u0435\u0440\u0443\u043d\u043e\u043a<\/td>\nTwo-stage, Two-row (\u4e8c\u5217\u4e8c\u7ea7)<\/td>\n\u2013<\/td>\n<\/tr>\n
\u041c\u0456\u0441\u0442\u043a\u0456\u0441\u0442\u044c<\/td>\n25<\/td>\n\u043c\u00b3\/\u0445\u0432<\/td>\n<\/tr>\n
\u0422\u0438\u0441\u043a \u043d\u0430\u0433\u043d\u0456\u0442\u0430\u043d\u043d\u044f<\/td>\n1.00<\/td>\n\u041c\u041f\u0430<\/td>\n<\/tr>\n
Compressor Size (L \u00d7 W \u00d7 H)<\/td>\n2500 \u00d7 1600 \u00d7 2700<\/td>\nmm<\/td>\n<\/tr>\n
\u0412\u0430\u0433\u0430<\/td>\n4.50<\/td>\nt<\/td>\n<\/tr>\n
\u041f\u043e\u0442\u0443\u0436\u043d\u0456\u0441\u0442\u044c<\/td>\n200<\/td>\n\u043a\u0412\u0442<\/td>\n<\/tr>\n
\u041d\u0430\u043f\u0440\u0443\u0433\u0430<\/td>\n380 \/ 6k or 10k<\/td>\nV<\/td>\n<\/tr>\n
\u0413\u0430\u0437\u043e\u0432\u0435 \u0441\u0435\u0440\u0435\u0434\u043e\u0432\u0438\u0449\u0435<\/td>\nNitrogen (N\u2082)<\/td>\n\u2013<\/td>\n<\/tr>\n
Lubrication<\/td>\n\u0411\u0435\u0437 \u043e\u043b\u0456\u0457<\/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

<\/p>\n

\n

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

1. High-Temperature Oil-Free PTFE Sealing Technology<\/h3>\n

The LW-25\/10 utilizes a proprietary self-lubricating piston ring and rider band assembly<\/strong> manufactured from high-performance PTFE composites reinforced with glass fiber and bronze particulates, specifically formulated for high-pressure service. This material achieves a coefficient of friction below 0.06 without any external hydrocarbon lubrication, completely eliminating oil vapor carryover into the nitrogen product stream. The rings are engineered for the elevated discharge temperatures associated with 1.00 MPa operation, maintaining dimensional stability and sealing integrity up to 190\u00b0C. For operators in regulated industries, this delivers native ISO 8573-1 Class 0 compliance<\/strong> without the capital cost, maintenance burden, or energy penalty of downstream oil-filtration systems.<\/p>\n

2. Optimized Two-Stage High-Pressure Thermodynamic Design<\/h3>\n

The two-stage compression architecture<\/strong> of the LW-25\/10 is thermodynamically optimized for the demanding 1.00 MPa discharge pressure target. By carefully dividing the pressure ratio between a low-pressure cylinder and a high-pressure cylinder with an optimized inter-stage pressure, the compressor achieves a significantly lower mean effective temperature per stage compared to single-stage designs. A high-efficiency shell-and-tube intercooler between stages removes the heat of compression, maintaining discharge temperatures below 160\u00b0C even at maximum continuous load. This advanced thermal management is essential for preserving PTFE ring integrity at high pressure ratios and extends valve plate service life by approximately 45% versus single-stage alternatives.<\/p>\n

3. Reinforced Cast-Iron Frame with Force Balance<\/h3>\n

The main frame is cast from GG25 gray cast iron<\/strong> (equivalent to ASTM A48 Class 30B) with reinforced wall sections and integral cooling water passages. 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 valuable for the LW-25\/10 given its high-pressure operation, where reciprocating forces are substantially higher than low-pressure equivalents. The reduced vibration transmission permits installation on a lighter reinforced concrete inertia block (minimum 8 tonnes versus 12+ tonnes for single-row high-pressure equivalents), reducing civil engineering costs.<\/p>\n

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

The LW-25\/10 is driven by a 200 kW induction motor<\/strong> available in 380V, 6kV, or 10kV configurations, conforming to IEC 60034-1 efficiency class IE3. The flexible voltage options allow direct integration into diverse industrial electrical infrastructures: the 380V configuration suits facilities with existing low-voltage distribution, while the 6kV and 10kV options eliminate the need for step-down transformers in large industrial plants with medium-voltage bus systems. This electrical versatility reduces infrastructure costs and improves overall energy efficiency by minimizing transformation losses.<\/p>\n

\"LW-25\/10<\/p>\n<\/div>\n

<\/p>\n

\n

Application Scenarios<\/h2>\n

High-Pressure Nitrogen Injection for Petrochemical Reactors<\/h3>\n

In petrochemical and refining operations, the LW-25\/10 provides high-pressure nitrogen for reactor inerting, catalyst bed preservation, emergency nitrogen injection, and process vessel purging<\/strong>. The 1.00 MPa discharge pressure is sufficient to overcome the operating pressures of typical fixed-bed reactors, fluid catalytic cracking units, and hydrocracker systems, allowing direct nitrogen injection without intermediate boosting. The continuous-duty rating ensures uninterrupted nitrogen availability during extended turnaround campaigns. The oil-free certification is mandatory for petrochemical applications where nitrogen contacts catalyst beds or enters process streams that must remain completely hydrocarbon-free to prevent catalyst poisoning or product contamination.<\/p>\n

\"LW-25\/10<\/p>\n

High-Pressure VPSA Nitrogen Booster Stations<\/h3>\n

For VPSA nitrogen generators producing high-purity nitrogen at near-atmospheric pressure, the LW-25\/10 high-pressure nitrogen booster<\/a> compresses the low-pressure product to 1.00 MPa for demanding distribution applications. The elevated discharge pressure is particularly valuable for VPSA installations serving high-pressure process consumers, long-distance pipeline networks with significant friction losses, or facilities requiring nitrogen at pressure for direct injection into process vessels. The oil-free compression path is absolutely essential because hydrocarbon contamination would permanently poison the carbon molecular sieve adsorbent, degrading separation efficiency and requiring costly adsorbent replacement.<\/p>\n

Pipeline Nitrogen Boosting & Pressure Maintenance<\/h3>\n

Industrial gas distribution networks spanning multiple kilometers require nitrogen at elevated pressure to overcome pipeline friction losses and maintain adequate flow at remote consumers. The LW-25\/10’s 1.00 MPa discharge pressure provides sufficient head for distribution over distances up to 5 km through DN200 pipelines, making it suitable for centralized nitrogen supply to large industrial complexes, chemical parks, and integrated manufacturing facilities. The 25 m\u00b3\/min capacity supports multiple high-pressure consumers simultaneously, including reactor inerting systems, tank blanketing stations, and emergency nitrogen injection points.<\/p>\n

\"LW-25\/10<\/p>\n

High-Pressure Food Packaging & Modified Atmosphere Systems<\/h3>\n

Large-scale food packaging facilities with high-speed MAP (Modified Atmosphere Packaging) lines require nitrogen at elevated pressure to achieve rapid gas displacement in packaging chambers. The LW-25\/10’s 1.00 MPa discharge pressure enables fast-fill nitrogen injection, reducing cycle times and increasing packaging line throughput. The oil-free certification ensures compliance with FDA 21 CFR 173.310 and EU Regulation 231\/2012 for food-grade nitrogen. The absence of oil contamination eliminates risks of off-flavors, rancidity, or product discoloration that can occur with lubricated compressors in food-contact applications.<\/p>\n<\/div>\n

<\/p>\n

\n

Material & Construction<\/h2>\n

The LW-25\/10 is constructed from premium materials selected for high-pressure nitrogen compatibility, thermal resistance, and extended operational life:<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Component<\/th>\n\u041c\u0430\u0442\u0435\u0440\u0456\u0430\u043b<\/th>\nSpecification<\/th>\n<\/tr>\n<\/thead>\n
Cylinder Block<\/td>\nGray Cast Iron<\/td>\nGG25 \/ HT250, reinforced walls, integral cooling jackets<\/td>\n<\/tr>\n
Crankshaft<\/td>\nForged Alloy Steel<\/td>\n42CrMo4, Q&T, ISO 1940 G2.5 dynamically balanced<\/td>\n<\/tr>\n
Piston Rings<\/td>\nPTFE-Glass-Bronze Composite<\/td>\nSelf-lubricating, high-temp rated to 190\u00b0C<\/td>\n<\/tr>\n
Rider Bands<\/td>\nPTFE Composite<\/td>\nPiston guidance, anti-scuffing, wear rate <0.04 mm\/1000h<\/td>\n<\/tr>\n
Valve Plates<\/td>\nStainless Steel<\/td>\nSS316, high-pressure 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 \/ SS316 Tubes<\/td>\nASME VIII Div.1, 1.5\u00d7 hydrotest, 30 min hold<\/td>\n<\/tr>\n
Aftercooler<\/td>\nCarbon Steel Shell \/ SS316 Tubes<\/td>\nHigh-efficiency finned tube, 32\u00b0C cooling water rated<\/td>\n<\/tr>\n
High-Pressure Piping<\/td>\nSeamless Carbon Steel<\/td>\nASTM A106 Grade B, Schedule 80<\/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. 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.<\/p>\n

\"LW-25\/10<\/p>\n<\/div>\n

<\/p>\n

\n

Installation & Maintenance Guidelines<\/h2>\n

Foundation & Structural Requirements<\/h3>\n

The LW-25\/10 has a dry weight of 4.50 tonnes and a center of gravity approximately 950 mm above the baseplate. Due to the two-row opposed-cylinder design, unbalanced forces are significantly reduced despite the high-pressure operation, permitting installation on a reinforced concrete inertia block of 8\u201310 tonnes<\/strong>. The block should be mounted on elastomeric vibration isolators (natural frequency 6\u20138 Hz) to prevent vibration transmission. 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 water distribution circuit supplies the cylinder jackets, intercooler, and aftercooler in parallel branches. Water quality specifications: pH 6.5\u20138.5, total dissolved solids < 500 mg\/L, chloride content < 50 mg\/L (to prevent SS316 tube corrosion), suspended solids < 30 mg\/L, and total hardness < 300 mg\/L as CaCO\u2083. 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 corrosion in the high-pressure cooling circuits.<\/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
250 hours<\/td>\nValve Plate Inspection<\/td>\nRemove and inspect suction\/discharge valves for carbon deposits, spring fatigue, or cracking<\/td>\n<\/tr>\n
1,000 hours<\/td>\nPiston Ring Wear Assessment<\/td>\nMeasure ring groove clearance; replace rings if clearance exceeds 0.20 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 main bearing clearances, replace bearings if >0.08 mm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

The oil-free design of the LW-25\/10 dramatically reduces maintenance complexity compared to lubricated alternatives. There are no oil changes to schedule, no lubricating oil samples to analyze, no oil filter elements to replace, and no oil separator cartridges to monitor. The primary 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 simplification translates to lower labor costs, reduced spare parts inventory, and higher equipment availability.<\/p>\n

\"LW-25\/10<\/p>\n<\/div>\n

<\/p>\n

\n

Compliance & Safety Certifications<\/h2>\n

The LW-25\/10 nitrogen compressor is designed, manufactured, and tested to meet or exceed the following international standards and regulatory frameworks:<\/p>\n

\n
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
\u26a0\ufe0f Critical Safety Advisory<\/strong><\/p>\n

Nitrogen is classified as a simple asphyxiant gas. All LW-25\/10 installations must incorporate continuous oxygen deficiency monitoring in the compressor room and all adjacent areas where nitrogen leakage could accumulate. Ventilation systems must be engineered 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 into enclosed compressor rooms must include portable oxygen monitors and a buddy-system protocol. Additionally, the 1.00 MPa discharge pressure requires all downstream piping and vessels to be rated for the maximum working pressure with appropriate safety relief devices.<\/p>\n<\/div>\n

\"LW-25\/10<\/p>\n<\/div>\n

<\/p>\n

\n

Performance & Efficiency Analysis<\/h2>\n

The LW-25\/10 achieves a specific power consumption of approximately 8.00 kW per m\u00b3\/min<\/strong> of nitrogen delivered at 1.00 MPa discharge pressure. This efficiency metric is respectable for an oil-free piston compressor operating at a high pressure ratio, reflecting the thermodynamic challenges of compressing nitrogen to 1.00 MPa. For comparison, oil-lubricated screw compressors in similar high-pressure applications typically consume 8.5\u20139.5 kW\/m\u00b3\/min, while diaphragm compressors (often selected for oil-free high-pressure service) can exceed 12 kW\/m\u00b3\/min.<\/p>\n

Over a standard 8,000-hour annual operating schedule, the LW-25\/10’s efficiency advantage generates approximately 40,000\u2013100,000 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$8,000 in direct operating cost reduction per year. However, the primary economic driver for LW-25\/10 selection is typically the elimination of oil-related consumables and downstream purification equipment<\/strong> rather than marginal energy savings.<\/p>\n

The total cost of ownership for high-pressure nitrogen compression<\/a> is significantly reduced by the absence of oil in the compression path. A typical oil-lubricated compressor of this pressure rating requires coalescing filters, activated carbon adsorbers, oil monitoring instrumentation, and periodic oil changes that collectively add $8,000\u2013$15,000 in annual operating costs. The LW-25\/10’s oil-free design eliminates these expenses entirely, while also removing the 3\u20135% energy penalty associated with downstream oil-removal equipment.<\/p>\n<\/div>\n

<\/p>\n

\n

Customization & OEM Capabilities<\/h2>\n

We provide comprehensive customization options to adapt the LW-25\/10 to specific site conditions, integration requirements, and end-user specifications:<\/p>\n