{"id":575,"date":"2026-07-20T07:37:10","date_gmt":"2026-07-20T07:37:10","guid":{"rendered":"https:\/\/n2-compressor.com\/?post_type=product&p=575"},"modified":"2026-07-20T07:37:45","modified_gmt":"2026-07-20T07:37:45","slug":"zw-5-4-620-nitrogen-compressor","status":"publish","type":"product","link":"https:\/\/n2-compressor.com\/vi\/san-pham\/zw-5-4-620-nitrogen-compressor\/","title":{"rendered":"M\u00e1y n\u00e9n kh\u00ed nit\u01a1 ZW-5.4\/6~20 \u2013 M\u00e1y t\u0103ng \u00e1p N2 kh\u00f4ng d\u1ea7u, \u00e1p su\u1ea5t thay \u0111\u1ed5i, d\u00e0nh cho c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p linh ho\u1ea1t."},"content":{"rendered":"
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M\u00e1y n\u00e9n kh\u00ed nit\u01a1 ZW-5.4\/6~20 \u2013 M\u00e1y t\u0103ng \u00e1p N2 kh\u00f4ng d\u1ea7u, \u00e1p su\u1ea5t thay \u0111\u1ed5i, d\u00e0nh cho c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p linh ho\u1ea1t.<\/h1>\n

Engineered to deliver 5.4 m\u00b3\/min across a versatile pressure range from 0.60 MPa to 2.00 MPa, the ZW-5.4\/6~20 is a two-stage, two-row oil-free piston nitrogen compressor designed for multi-pressure nitrogen distribution, pilot plant operations, and flexible industrial gas systems. Zero oil contamination, compact footprint, and optimized for variable-pressure duty cycles.<\/p>\n

Y\u00eau c\u1ea7u b\u00e1o gi\u00e1<\/a>
\nXem d\u00f2ng m\u00e1y n\u00e9n N2<\/a><\/div>\n

 <\/p>\n<\/div>\n

<\/p>\n

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T\u1ed5ng quan s\u1ea3n ph\u1ea9m<\/h2>\n

C\u00e1i ZW-5.4\/6~20 nitrogen compressor<\/strong> represents a uniquely versatile solution within our oil-free piston compressor family, distinguished by its broad operating pressure range that spans from 0.60 MPa to 2.00 MPa<\/strong> at a consistent capacity of 5.4 m\u00b3\/min<\/strong>. This variable-pressure capability makes the unit exceptionally well-suited for applications where nitrogen demand fluctuates between medium-pressure and high-pressure requirements, or where a single compressor must serve multiple consumers at different pressure levels.<\/p>\n

The designation “6~20” in the model number reflects the compressor’s ability to operate across a discharge pressure spectrum equivalent to 0.60\u20132.00 MPa, achieved through adjustable clearance pocket control and staged unloading mechanisms. This flexibility eliminates the need for multiple compressors or intermediate pressure-reducing stations in facilities with diverse nitrogen pressure requirements, significantly reducing capital expenditure and maintenance complexity.<\/p>\n

Like all units in our ZW series, the ZW-5.4\/6~20 maintains a \u0111\u01b0\u1eddng d\u1eabn n\u00e9n ho\u00e0n to\u00e0n kh\u00f4ng d\u1ea7u<\/strong> utilizing self-lubricating PTFE composite piston rings and rider bands. This ensures the nitrogen product stream remains completely free of hydrocarbon contamination, achieving Ch\u1ee9ng nh\u1eadn ISO 8573-1 Lo\u1ea1i 0<\/strong> without any downstream purification equipment. The compact dimensions and modest weight make this unit ideal for pilot plants, R&D facilities, and mobile nitrogen supply systems where space and portability are critical constraints.<\/p>\n

\"ZW-5.4\/6~20<\/p>\n<\/div>\n

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Technical Specifications \u2013 ZW-5.4\/6~20<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Tham s\u1ed1<\/th>\nGi\u00e1 tr\u1ecb<\/th>\n\u0110\u01a1n v\u1ecb<\/th>\n<\/tr>\n<\/thead>\n
Ng\u01b0\u1eddi m\u1eabu<\/td>\nZW-5.4\/6~20<\/td>\n\u2013<\/td>\n<\/tr>\n
M\u1eabu<\/td>\nHai giai \u0111o\u1ea1n, hai h\u00e0ng (\u4e8c\u5217\u4e8c\u7ea7)<\/td>\n\u2013<\/td>\n<\/tr>\n
Dung t\u00edch<\/td>\n5.4 (inlet 0.60MPa)<\/td>\nm\u00b3\/ph\u00fat<\/td>\n<\/tr>\n
Discharge Pressure Range<\/td>\n0.60 \u2013 2.00<\/td>\nMPa<\/td>\n<\/tr>\n
K\u00edch th\u01b0\u1edbc m\u00e1y n\u00e9n (D\u00e0i \u00d7 R\u1ed9ng \u00d7 Cao)<\/td>\n2570 \u00d7 1550 \u00d7 2345<\/td>\nmm<\/td>\n<\/tr>\n
C\u00e2n n\u1eb7ng<\/td>\n2.40<\/td>\nt<\/td>\n<\/tr>\n
Quy\u1ec1n l\u1ef1c<\/td>\n132<\/td>\nkW<\/td>\n<\/tr>\n
\u0110i\u1ec7n \u00e1p<\/td>\n380\/6k ho\u1eb7c 10k<\/td>\nV<\/td>\n<\/tr>\n
M\u00f4i tr\u01b0\u1eddng kh\u00ed<\/td>\nNit\u01a1 (N\u2082)<\/td>\n\u2013<\/td>\n<\/tr>\n
B\u00f4i tr\u01a1n<\/td>\nKh\u00f4ng d\u1ea7u<\/td>\n\u2013<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

* Capacity rated at 0.60 MPa inlet pressure. At higher discharge pressures, capacity adjusts proportionally. All specifications per ISO 1217, Annex C. Actual performance varies with site altitude, ambient temperature, and inlet conditions.<\/em><\/p>\n<\/div>\n

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C\u00e1c t\u00ednh n\u0103ng ch\u00ednh v\u00e0 \u01b0u \u0111i\u1ec3m k\u1ef9 thu\u1eadt<\/h2>\n

1. Variable Pressure Range with Clearance Pocket Control<\/h3>\n

The ZW-5.4\/6~20 incorporates an innovative adjustable clearance pocket system<\/strong> that allows the compressor to operate efficiently across a discharge pressure range from 0.60 MPa to 2.00 MPa without mechanical modification. By adjusting the clearance volume in the high-pressure cylinder, the unit optimizes volumetric efficiency at each pressure setpoint. This eliminates the need for multiple compressors or pressure-reducing valves in facilities with variable nitrogen pressure requirements, reducing both capital expenditure and operating complexity. The pressure adjustment can be performed manually or automated via pneumatic actuators integrated with the control system.<\/p>\n

2. Oil-Free PTFE Composite Sealing for High-Pressure Service<\/h3>\n

The ZW-5.4\/6~20 employs a H\u1ec7 th\u1ed1ng v\u00f2ng piston t\u1ef1 b\u00f4i tr\u01a1n v\u00e0 \u0111ai d\u1eabn \u0111\u1ed9ng<\/strong> constructed from high-performance PTFE composites reinforced with carbon fiber and bronze particulates. This material formulation is specifically engineered for high-pressure nitrogen service, maintaining sealing integrity and low friction coefficients across the full 0.60\u20132.00 MPa operating range. The rings achieve a coefficient of friction below 0.07 without any external lubrication, ensuring H\u00e0m l\u01b0\u1ee3ng d\u1ea7u theo ti\u00eau chu\u1ea9n ISO 8573-1 Lo\u1ea1i 0<\/strong> in the compressed nitrogen stream. For pilot plants and research facilities where nitrogen purity is non-negotiable, this native oil-free certification eliminates downstream filtration costs entirely.<\/p>\n

3. Two-Stage Compression for Extended Pressure Ratio<\/h3>\n

C\u00e1i ki\u1ebfn tr\u00fac hai giai \u0111o\u1ea1n, hai h\u00e0ng<\/strong> is essential for managing the high pressure ratios associated with 2.00 MPa discharge pressure. By dividing the compression work between a low-pressure cylinder and a high-pressure cylinder, the unit limits the discharge temperature of each stage to below 160\u00b0C, preserving PTFE ring integrity and preventing thermal degradation. An integrated shell-and-tube intercooler removes the heat of compression between stages, improving overall thermodynamic efficiency and extending valve plate service life. At lower discharge pressures (0.60\u20131.00 MPa), the unit can operate with reduced inter-stage cooling demand, further improving efficiency.<\/p>\n

4. Flexible Voltage Configuration for Diverse Installations<\/h3>\n

The ZW-5.4\/6~20 is available with a 132 kW drive motor<\/strong> in 380V, 6kV, or 10kV configurations. The standard 380V option is ideal for laboratory and pilot plant installations with existing low-voltage distribution infrastructure. The 6kV and 10kV options cater to industrial facilities with medium-voltage bus systems, reducing electrical infrastructure costs and improving energy efficiency by eliminating step-down transformers. This voltage flexibility ensures the ZW-5.4\/6~20 can be integrated into virtually any electrical environment without costly modifications.<\/p>\n

\"ZW-5.4\/6~20<\/p>\n<\/div>\n

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C\u00e1c k\u1ecbch b\u1ea3n \u1ee9ng d\u1ee5ng<\/h2>\n

Pilot Plants & Process Development Facilities<\/h3>\n

Chemical and pharmaceutical pilot plants frequently require nitrogen at varying pressures depending on the process being tested. The ZW-5.4\/6~20 variable-pressure nitrogen compressor<\/a> serves as a single, flexible nitrogen source that can supply inerting gas at 0.60 MPa for reactor blanketing during one campaign, then adjust to 2.00 MPa for high-pressure catalyst testing during the next campaign. The 5.4 m\u00b3\/min capacity is well-matched to the scale of pilot plant operations, and the oil-free design ensures no hydrocarbon contamination of sensitive catalysts or reaction products.<\/p>\n

\"ZW-5.4\/6~20<\/p>\n

Multi-Pressure Industrial Gas Distribution<\/h3>\n

Industrial facilities with diverse nitrogen consumers\u2014such as tank blanketing at 0.60 MPa, pipeline purging at 1.20 MPa, and emergency vessel inerting at 2.00 MPa\u2014traditionally require multiple compressors or pressure-reducing stations. The ZW-5.4\/6~20 eliminates this complexity by providing a single compressor capable of serving all pressure requirements. The adjustable discharge pressure can be changed between shifts or campaigns to match the active process demands, reducing equipment count and simplifying maintenance scheduling.<\/p>\n

Mobile Nitrogen Supply & Emergency Response<\/h3>\n

The compact footprint and modest weight of the ZW-5.4\/6~20 make it ideal for mobile nitrogen supply units<\/strong> mounted on road-legal trailers. The variable pressure capability is particularly valuable in emergency response scenarios where nitrogen may be needed at different pressures for pipeline purging, vessel inerting, or fire suppression. The unit can be transported to the site, connected to a nitrogen source (liquid nitrogen vaporizer or small VPSA generator), and quickly adjusted to the required discharge pressure. The oil-free design ensures no contamination of the protected process equipment.<\/p>\n

\"ZW-5.4\/6~20<\/p>\n

Research & University Laboratories<\/h3>\n

University research laboratories and national research institutes require high-purity nitrogen for a wide range of experiments, from inert atmosphere glove boxes (0.60 MPa) to high-pressure synthesis reactors (2.00 MPa). The ZW-5.4\/6~20’s variable pressure range and oil-free certification make it an ideal central nitrogen supply for multi-disciplinary research facilities. The 5.4 m\u00b3\/min capacity can simultaneously support multiple high-pressure reactors, several glove box stations, and gas chromatography instruments without compromising purity or pressure stability.<\/p>\n<\/div>\n

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V\u1eadt li\u1ec7u & X\u00e2y d\u1ef1ng<\/h2>\n

The ZW-5.4\/6~20 is constructed from materials selected for high-pressure nitrogen compatibility, corrosion resistance, and compact structural integrity:<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n
Th\u00e0nh ph\u1ea7n<\/th>\nV\u1eadt li\u1ec7u<\/th>\nTh\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt<\/th>\n<\/tr>\n<\/thead>\n
Kh\u1ed1i xi lanh<\/td>\nGang x\u00e1m<\/td>\nGG25 \/ HT250, c\u00e1c \u0111\u01b0\u1eddng d\u1eabn l\u00e0m m\u00e1t t\u00edch h\u1ee3p<\/td>\n<\/tr>\n
Tr\u1ee5c khu\u1ef7u<\/td>\nTh\u00e9p h\u1ee3p kim r\u00e8n<\/td>\n42CrMo4, Q&T, c\u00e2n b\u1eb1ng \u0111\u1ed9ng<\/td>\n<\/tr>\n
V\u00f2ng piston<\/td>\nPTFE-Carbon-Bronze Composite<\/td>\nSelf-lubricating, high-pressure rated to 2.5 MPa<\/td>\n<\/tr>\n
C\u00e1c ban nh\u1ea1c Rider<\/td>\nH\u1ee3p ch\u1ea5t PTFE<\/td>\nH\u1ec7 th\u1ed1ng d\u1eabn h\u01b0\u1edbng piston, ch\u1ed1ng tr\u1ea7y x\u01b0\u1edbc, t\u1ef7 l\u1ec7 m\u00e0i m\u00f2n <0,05 mm\/1000 gi\u1edd.<\/td>\n<\/tr>\n
T\u1ea5m van<\/td>\nTh\u00e9p kh\u00f4ng g\u1ec9<\/td>\nSS316, concentric ring spring-loaded<\/td>\n<\/tr>\n
Clearance Pockets<\/td>\nCarbon Steel with SS316 Liner<\/td>\nAdjustable volume, pneumatic actuation optional<\/td>\n<\/tr>\n
B\u1ed9 l\u00e0m m\u00e1t kh\u00ed n\u1ea1p<\/td>\nV\u1ecf th\u00e9p cacbon \/ \u1ed0ng th\u00e9p kh\u00f4ng g\u1ec9 SS304<\/td>\nTh\u1eed nghi\u1ec7m th\u1ee7y l\u1ef1c ASME VIII Div.1, 1,5\u00d7<\/td>\n<\/tr>\n
Khung \u0111\u1ebf<\/td>\nTh\u00e9p k\u1ebft c\u1ea5u<\/td>\nWelded, vibration-damped, forklift-compatible<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

T\u1ea5t c\u1ea3 c\u00e1c b\u1ed9 ph\u1eadn ch\u1ecbu \u00e1p l\u1ef1c \u0111\u1ec1u tu\u00e2n th\u1ee7 ASME BPVC Ph\u1ea7n VIII Ph\u00e2n khu 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.<\/p>\n

\"ZW-5.4\/6~20<\/p>\n<\/div>\n

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H\u01b0\u1edbng d\u1eabn l\u1eafp \u0111\u1eb7t v\u00e0 b\u1ea3o tr\u00ec<\/h2>\n

Y\u00eau c\u1ea7u v\u1ec1 n\u1ec1n m\u00f3ng v\u00e0 kh\u00f4ng gian<\/h3>\n

The ZW-5.4\/6~20 weighs 2.40 tonnes and features a compact vertical design with a low center of gravity. A reinforced concrete pad of 4\u20135 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. The unit’s forklift-compatible base frame allows positioning without overhead crane equipment.<\/p>\n

Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt n\u01b0\u1edbc l\u00e0m m\u00e1t<\/h3>\n

Nhu c\u1ea7u n\u01b0\u1edbc l\u00e0m m\u00e1t x\u1ea5p x\u1ec9 15 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 0.5 m\u00b3 buffer tank is recommended. At higher discharge pressures (1.50\u20132.00 MPa), cooling water flow should be increased by approximately 20% to manage the additional heat of compression.<\/p>\n

Kho\u1ea3ng th\u1eddi gian b\u1ea3o tr\u00ec<\/h3>\n
\n\n\n\n\n\n\n\n\n\n
Kho\u1ea3ng th\u1eddi gian<\/th>\nM\u1ee5c d\u1ecbch v\u1ee5<\/th>\nC\u1ea7n h\u00e0nh \u0111\u1ed9ng<\/th>\n<\/tr>\n<\/thead>\n
H\u1eb1ng ng\u00e0y<\/td>\nKi\u1ec3m tra tr\u1ef1c quan v\u00e0 v\u1eadn h\u00e0nh<\/td>\nInspect for leaks, abnormal noise, cooling water flow, discharge pressure stability<\/td>\n<\/tr>\n
250 gi\u1edd<\/td>\nKi\u1ec3m tra t\u1ea5m van<\/td>\nKi\u1ec3m tra c\u1eb7n carbon, hi\u1ec7n t\u01b0\u1ee3ng m\u1ecfi l\u00f2 xo ho\u1eb7c n\u1ee9t t\u1ea5m.<\/td>\n<\/tr>\n
1.000 gi\u1edd<\/td>\n\u0110\u00e1nh gi\u00e1 \u0111\u1ed9 m\u00e0i m\u00f2n v\u00f2ng piston<\/td>\nMeasure groove clearance; replace rings if > 0.20 mm<\/td>\n<\/tr>\n
4.000 gi\u1edd<\/td>\nD\u1ecbch v\u1ee5 trung gian<\/td>\nThay th\u1ebf v\u00f2ng piston, v\u00f2ng d\u1eabn h\u01b0\u1edbng v\u00e0 c\u1ee5m van.<\/td>\n<\/tr>\n
8.000 gi\u1edd<\/td>\n\u0110\u1ea1i tu l\u1edbn<\/td>\nKi\u1ec3m tra tr\u1ee5c khu\u1ef7u, \u0111o khe h\u1edf b\u1ea1c \u0111\u1ea1n, thay th\u1ebf n\u1ebfu c\u1ea7n.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

The oil-free design eliminates all oil-related maintenance tasks. There are no oil changes, filter replacements, separator cartridge changes, or oil analysis requirements. The only consumable wear items are the v\u00f2ng piston PTFE v\u00e0 v\u00f2ng d\u1eabn h\u01b0\u1edbng<\/strong>, which typically achieve 3,500\u20135,500 hours at high-pressure operation (1.50\u20132.00 MPa) and 4,500\u20136,500 hours at medium-pressure operation (0.60\u20131.00 MPa).<\/p>\n

\"ZW-5.4\/6~20<\/p>\n<\/div>\n

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Ch\u1ee9ng nh\u1eadn tu\u00e2n th\u1ee7 v\u00e0 an to\u00e0n<\/h2>\n

The ZW-5.4\/6~20 nitrogen compressor meets the following international standards and regulatory requirements:<\/p>\n

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Thi\u1ebft b\u1ecb ch\u1ecbu \u00e1p l\u1ef1c<\/strong>
\nASME BPVC Ph\u1ea7n VIII Div.1, GB 150-2011, PED 2014\/68\/EU M\u00f4-\u0111un A<\/span><\/div>\n
An to\u00e0n \u0111i\u1ec7n v\u00e0 m\u00e1y m\u00f3c<\/strong>
\nIEC 60034-1 (hi\u1ec7u su\u1ea5t IE3), IEC 60204-1, ISO 12100<\/span><\/div>\n
Ch\u1ee9ng nh\u1eadn kh\u00f4ng d\u1ea7u<\/strong>
\n\u0110\u1ea1t ti\u00eau chu\u1ea9n ISO 8573-1 Lo\u1ea1i 0 (H\u00e0m l\u01b0\u1ee3ng d\u1ea7u), \u0111\u01b0\u1ee3c ki\u1ec3m nghi\u1ec7m b\u1edfi T\u00dcV Rheinland.<\/span><\/div>\n
Ch\u1ea5t l\u01b0\u1ee3ng & M\u00f4i tr\u01b0\u1eddng<\/strong>
\nISO 9001:2015, ISO 14001:2015<\/span><\/div>\n<\/div>\n
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\u26a0\ufe0f Th\u00f4ng b\u00e1o an to\u00e0n<\/strong><\/p>\n

Nitrogen is an odorless, colorless asphyxiant gas. All ZW-5.4\/6~20 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 requires portable oxygen monitors and a buddy system.<\/p>\n<\/div>\n

\"ZW-5.4\/6~20<\/p>\n<\/div>\n

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Ph\u00e2n t\u00edch hi\u1ec7u su\u1ea5t v\u00e0 hi\u1ec7u qu\u1ea3<\/h2>\n

The ZW-5.4\/6~20 achieves a specific power consumption of approximately 24.4 kW per m\u00b3\/min<\/strong> at 2.00 MPa discharge pressure, improving to approximately 18.5 kW\/m\u00b3\/min at 0.60 MPa. While the specific power is higher than larger-capacity models due to reduced scale efficiency, the unit’s variable-pressure capability delivers unique operational flexibility that offsets the marginal efficiency penalty. For comparison, a dedicated high-pressure diaphragm compressor of equivalent capacity would consume 28\u201335 kW\/m\u00b3\/min, while oil-lubricated screw compressors at 2.00 MPa typically exceed 20 kW\/m\u00b3\/min.<\/p>\n

The primary economic advantage of the ZW-5.4\/6~20 is the elimination of multiple compressors<\/strong> in facilities with variable pressure requirements. A facility requiring nitrogen at 0.60 MPa, 1.20 MPa, and 2.00 MPa would traditionally need three separate compressors or one compressor plus two pressure-reducing stations. The ZW-5.4\/6~20 replaces this entire infrastructure with a single unit, reducing capital expenditure by 40\u201360% and maintenance complexity by a similar margin. The t\u1ed5ng chi ph\u00ed s\u1edf h\u1eefu cho h\u1ec7 th\u1ed1ng n\u00e9n kh\u00ed nit\u01a1<\/a> in variable-pressure applications is dominated by equipment count and maintenance labor rather than marginal energy efficiency.<\/p>\n

The oil-free design further reduces TCO by eliminating oil-related consumables. A typical lubricated compressor of this size and pressure range consumes 80\u2013150 liters of lubricating oil annually, plus filter elements, separator cartridges, and waste oil disposal costs totaling $1,500\u2013$3,000\/year. The ZW-5.4\/6~20 removes these expenses entirely.<\/p>\n<\/div>\n

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Kh\u1ea3 n\u0103ng t\u00f9y ch\u1ec9nh v\u00e0 s\u1ea3n xu\u1ea5t theo \u0111\u01a1n \u0111\u1eb7t h\u00e0ng (OEM)<\/h2>\n

We provide flexible customization options to adapt the ZW-5.4\/6~20 to specific installation constraints and end-user requirements:<\/p>\n