China Best Sales Zw Series Lubricating Piston Compressor for Unloading, Loading, Tank Dumping, Residual Gas Recovery air compressor CHINAMFG freight

Product Description


Company Profile


The company’s main products include desulfurization, dehydrocarbons, separation, compression, filling, storage and transportation equipment for natural gas extraction in oil and gas fields; complete sets of wellhead gas recovery equipment; complete sets of vented natural gas recovery equipment; complete sets of coalbed methane, shale gas and biogas development and utilization equipment Equipment; CNG filling station complete equipment; LNG complete equipment; BOG compressor; large-displacement screw-piston compound compressor; membrane nitrogen and adsorption nitrogen production complete equipment; in addition, hydrogen, oxygen, nitrogen, argon, carbon monoxide gas, carbon dioxide gas, coal gas, hydrogen sulfide gas, propylene gas, ethylene gas, methyl chloride gas, trifluoropropane gas, liquefied petroleum gas and other special gases, low-temperature gases and air compressors. Among them, the W and V series non-lubricated compressors produced by introducing advanced foreign technology have reached the international advanced level.


Product Description

This series of oil-free lubricating compressors is 1 of the first products produced by our factory in China. The product has low rotation speed, high component strength, smooth operation, long service life and easy maintenance.
Convenience and other features. Among them, ZW series compressors are in unit form. It integrates compressor, gas-liquid separator, filter, two-position four-way valve, safety valve, check valve, explosion-proof electric
The machine and chassis are integrated. It has the characteristics of small size, light weight, low noise, good sealing, easy installation and simple operation.
This product is mainly used for unloading, loading, tank dumping, residual gas recovery and residual liquid recovery of liquefied petroleum gas/C4, propylene and liquid ammonia. Widely used in gas, chemical industry, energy, etc.
Industry, it is a key equipment in gas, chemical, energy and other industries.
Note: During the process of unloading, the compressor pressurizes the gas from the storage tank and then presses it into the tanker through the gas phase pipeline. The pressure difference in the gas phase presses the liquid from the tanker to the storage tank to complete the process.
The process of unloading the truck. When the gas phase is pressurized, the gas phase temperature will increase. At this time, there is no need for forced cooling, because if the gas phase is compressed and then cooled, it will easily liquefy.
It is difficult to establish the gas phase pressure difference, which is not conducive to the replacement of the gas phase and the liquid phase. In short, it will cause the unloading process to be prolonged. If residual gas recovery is required, perform the residual gas recovery operation
In this case, a cooler can be selected to force-cool the gas phase so that the remaining gas can be recovered as quickly as possible.
The loading process is opposite to the unloading process

Product Parameters

Liquefied gas(CH4) loading and unloading compressor
Inlet pressure: ≤1.0MPa
Discharge pressure: ≤1.6MPa
Maximum pressure difference: 0.6MPa
Maximum instantaneous pressure ratio: ≤6
Cooling method: air cooling
The unloading volume is based on the inlet pressure of 1.0MPa,Discharge pressure 1.6MPa,Inlet temperature 40ºC,
The liquid density of liquefied gas is calculated at 582.5kg/m3. When the working conditions change, the unloading volume will change accordingly. This is for reference only.

No. Type Motor(KW) Size(MM) Loading and unloading truck speed(T/H)
1 ZW-0.25/10-16 4 1000X710X/865 -5.5
2 ZW-0.4/10-16 5.5 1000X710X/865 -9
3 ZW-0.5/10-16 7.5 1000X710X/865 -11
4 ZW-0.6/10-16 7.5 1000X710X/865 -13
5 ZW-0.8/10-16 11 1000X710X/865 -17.5
6 ZW-1.1/10-16 15 1000X710X/865 -24
7 ZW-1.35/10-16 18.5 1000X710X/865 -30
8 ZW-1.16/10-16 22 1400X900X1180 -35
9 ZW-2.0/10-16 30 1400X900X1180 -45
10 ZW-2.5/10-16 37 1400X900X1180 -55
11 ZW-3.0/10-16 45 1400X900X1180 -65
12 ZW-4.0/10-16 55 1400X900X1180 -85
13 VW-5.0/10-16 75 2000X1700X1400 -110
14 VW-6.0/10-16 90 2000X1700X1400 -130
15 VW-8.0/10-16 110 2000X1700X1400 -174
16 ZE-0.75/10-15 11 1450X800X1300 -16.3
17 2DG-1.5/10-16 22 1860X1680X930 -32.6

Propylene loading and unloading  compressor
Inlet pressure: ≤1.6MPa
Discharge pressure: ≤2.4MPa
Maximum pressure difference: 0.8MPa
Maximum instantaneous pressure ratio: ≤4
Cooling method: air cooling
The unloading volume is calculated based on the input pressure of 1.6MPa, discharge pressure of 2.4MPa, inlet temperature of 40°C, and propylene liquid density of 614kg/m3. When the working conditions change, the unloading volume will change accordingly. It is for reference only.

No. Type Motor(KW) Size(MM) Loading and unloading truck speed(T/H)
1 ZW-0.6/16-24 11 1000X680X870 -15
2 ZW-0.8/16-24 15 1000X680X870 -20
3 ZW-1.0/16-24 18.5 1000X680X870 -25
4 ZW-1.5/16-24 30 1400X900X1180 -36
5 ZW-2.0/16-24 37 1400X900X1180 -50
6 ZW-2.5/16-24 45 1400X900X1180 -60
7 ZW-3.0/16-24 55 1600X1100X1250 -74
8 ZW-4.0/16-24 75 1600X1100X1250 -98
9 ZW-6.0/16-24 132 2400X1700X1550 -147

Liquid ammonia loading and unloading  compressor

Inlet pressure: ≤1.6MPa
Discharge pressure: ≤2.4MPa
Maximum pressure difference: 0.8MPa
Maximum instantaneous pressure ratio: ≤4
Cooling method: air cooling
The unloading volume is calculated based on the input pressure of 1.6MPa, discharge pressure of 2.4MPa, inlet temperature of 40°C, and liquid ammonia density of 729kg/m3. When the working conditions change, the unloading volume will change accordingly. It is for reference only.

No. Type Motor(KW) Size(MM) Loading and unloading truck speed(T/H)
1 ZW-0.6/16-24 15 1100X700X900 -17.5
2 ZW-0.8/16-24 18.5 1100X700X900 -23
3 ZW-1.0/16-24 22 1000X680X870 -29
4 ZW-1.5/16-24 30 1400X900X1180 -43
5 ZW-2.0/16-24 37 1400X900X1180 -58
6 ZW-2.5/16-24 45 1400X900X1180 -73


Detailed Photos


After Sales Service

In addition to the high-quality performance of our products, we also attach great importance to providing customers with comprehensive services. We have an independent service operation and maintenance team, providing customers with various support and services, including technical support, debugging services, spare parts supply, renovation and upgrading, and major maintenance. We always adhere to the principle of customer-centrism, ensuring the safe and stable operation of customer equipment. Our service team is committed to providing reliable support for customers’ operations 24/7.

Training plan

Technical training is divided into 2 parts: company training and on-site training.
1)Company training
Before the unit is delivered, that is during the unit assembly period, users will be provided with a one-week on-site training by the company. Provide local accommodation and transportation facilities, and provide free venues, teaching materials, equipment, tools, etc. required for training. The company training content is as follows:
The working principle, structure and technical performance of the unit.
Unit assembly and adjustment, unit testing.
Operation of the unit, remote/local operation, manual/automatic operation, daily operation and management, familiar with the structure of each system of the unit.
Routine maintenance and upkeep of the unit, and precautions for operation and maintenance.
Analysis and troubleshooting of common faults, and emergency handling methods.
2) On-site training
During the installation and trial operation of the unit, on-site training will be conducted to teach the principles, structure, operation, maintenance, troubleshooting of common faults and other knowledge of the unit, so as to further become familiar with the various systems of the unit, so that the purchaser can independently and correctly operate the unit. Operation, maintenance and management.

Packaging & Shipping


  /* March 10, 2571 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

After-sales Service: 12 Month
Warranty: 12 Month
Lubrication Style: Lubricated

.shipping-cost-tm .tm-status-off{background: none;padding:0;color: #1470cc}

Shipping Cost:

Estimated freight per unit.

about shipping cost and estimated delivery time.
Payment Method:


Initial Payment

Full Payment
Currency: US$
Return&refunds: You can apply for a refund up to 30 days after receipt of the products.

air compressor

How Do You Troubleshoot Common Issues with Gas Air Compressors?

Troubleshooting common issues with gas air compressors involves identifying and addressing potential problems that may arise during operation. Here’s a detailed explanation of the troubleshooting process:

1. Start with Safety Precautions:

Prior to troubleshooting, ensure that the gas air compressor is turned off and disconnected from the power source. Follow proper safety procedures, such as wearing appropriate personal protective equipment (PPE), to avoid accidents or injuries.

2. Check Power Supply and Connections:

Verify that the compressor is receiving power and that all electrical connections are secure. Inspect the power cord, plug, and any switches or controls to ensure they are functioning properly. If the compressor is equipped with a battery, check its charge level and connections.

3. Check Fuel Supply:

For gas air compressors that use gasoline or propane, ensure that there is an adequate fuel supply. Check the fuel tank level and verify that the fuel shut-off valve is open. If the compressor has been sitting idle for an extended period, old or stale fuel may cause starting issues. Consider draining and replacing the fuel if necessary.

4. Inspect Air Filters:

Dirty or clogged air filters can restrict airflow and affect the compressor’s performance. Check the intake air filters and clean or replace them as needed. Clogged filters can be cleaned with compressed air or washed with mild detergent and water, depending on the type of filter.

5. Check Oil Level and Quality:

If the gas air compressor has an engine with an oil reservoir, verify the oil level using the dipstick or oil level indicator. Insufficient oil can lead to engine damage or poor performance. Additionally, check the oil quality to ensure it is clean and within the recommended viscosity range. If needed, change the oil following the manufacturer’s guidelines.

6. Inspect Spark Plug:

If the gas air compressor uses a spark plug ignition system, inspect the spark plug for signs of damage or fouling. Clean or replace the spark plug if necessary, following the manufacturer’s recommendations for gap setting and torque.

7. Check Belts and Pulleys:

Inspect the belts and pulleys that drive the compressor pump. Loose or worn belts can cause slippage and affect the compressor’s performance. Tighten or replace any damaged belts, and ensure that the pulleys are properly aligned.

8. Listen for Unusual Noises:

During operation, listen for any unusual or excessive noises, such as grinding, rattling, or squealing sounds. Unusual noises could indicate mechanical issues, loose components, or improper lubrication. If identified, consult the compressor’s manual or contact a qualified technician for further inspection and repair.

9. Consult the Owner’s Manual:

If troubleshooting steps do not resolve the issue, refer to the compressor’s owner’s manual for specific troubleshooting guidance. The manual may provide additional troubleshooting steps, diagnostic charts, or recommended maintenance procedures.

10. Seek Professional Assistance:

If the issue persists or if you are unsure about performing further troubleshooting steps, it is recommended to seek assistance from a qualified technician or contact the manufacturer’s customer support for guidance.

Remember to always prioritize safety and follow proper maintenance practices to prevent issues and ensure the reliable performance of the gas air compressor.

air compressor

What Is the Role of Air Receivers in Gas Air Compressor Systems?

Air receivers play a crucial role in gas air compressor systems by serving as storage tanks for compressed air. Here’s a detailed explanation:

1. Storage and Stabilization:

The primary function of an air receiver is to store compressed air generated by the gas air compressor. As the compressor produces compressed air, the air receiver collects and stores it. This storage capacity helps meet fluctuating demand in compressed air usage, providing a buffer between the compressor and the system’s air consumption.

By storing compressed air, the air receiver helps stabilize the supply to the system, reducing pressure fluctuations and ensuring a consistent and reliable flow of compressed air. This is particularly important in applications where the demand for compressed air may vary or experience peaks and valleys.

2. Pressure Regulation:

Another role of the air receiver is to assist in pressure regulation within the gas air compressor system. As compressed air enters the receiver, the pressure inside increases. When the pressure reaches a predetermined upper limit, typically set by a pressure switch or regulator, the compressor stops supplying air, and the excess air is stored in the receiver.

Conversely, when the pressure in the system drops below a certain lower limit, the pressure switch or regulator signals the compressor to start, replenishing the compressed air in the receiver and maintaining the desired pressure level. This cycling of the compressor based on pressure levels helps regulate and control the overall system pressure.

3. Condensate Separation:

During the compression process, moisture or condensate can form in the compressed air due to the cooling effect. The air receiver acts as a reservoir that allows the condensate to settle at the bottom, away from the outlet. The receiver often includes a drain valve at the bottom to facilitate the removal of accumulated condensate, preventing it from reaching downstream equipment and causing potential damage or performance issues.

4. Energy Efficiency:

Air receivers contribute to energy efficiency in gas air compressor systems. They help optimize the operation of the compressor by reducing the occurrence of short-cycling, which refers to frequent on-off cycling of the compressor due to rapid pressure changes. Short-cycling can cause excessive wear on the compressor and reduce its overall efficiency.

The presence of an air receiver allows the compressor to operate in longer and more efficient cycles. The compressor runs until the receiver reaches the upper pressure limit, ensuring a more stable and energy-efficient operation.

5. Air Quality Improvement:

Depending on the design, air receivers can also aid in improving air quality in the compressed air system. They provide a space for the compressed air to cool down, allowing moisture and some contaminants to condense and separate from the air. This can be further enhanced with the use of additional filtration and drying equipment installed downstream of the receiver.

In summary, air receivers play a vital role in gas air compressor systems by providing storage capacity, stabilizing compressed air supply, regulating system pressure, separating condensate, improving energy efficiency, and contributing to air quality control. They are an integral component in ensuring the reliable and efficient operation of compressed air systems across various industries and applications.

air compressor

What Are the Primary Applications of Gas Air Compressors?

Gas air compressors have a wide range of applications across various industries and activities. These compressors, powered by gas engines, provide a portable and versatile source of compressed air. Here’s a detailed explanation of the primary applications of gas air compressors:

1. Construction Industry:

Gas air compressors are extensively used in the construction industry. They power a variety of pneumatic tools and equipment, such as jackhammers, nail guns, impact wrenches, and concrete breakers. The portable nature of gas air compressors makes them ideal for construction sites where electricity may not be readily available or practical to use.

2. Agriculture and Farming:

Gas air compressors find applications in the agricultural sector. They are used to operate air-powered machinery and tools, including pneumatic seeders, sprayers, and agricultural pumps. Gas air compressors provide the necessary power to carry out tasks such as crop seeding, irrigation, and pest control in agricultural settings.

3. Recreational Activities:

Gas air compressors are commonly utilized in recreational activities. They are used to inflate tires, sports balls, inflatable structures, and recreational equipment such as air mattresses, rafts, and inflatable toys. Gas air compressors provide a convenient and portable solution for inflating various recreational items in outdoor settings.

4. Mobile Service Operations:

Gas air compressors are employed in mobile service operations, such as mobile mechanics, tire service providers, and mobile equipment repair services. These compressors power air tools and equipment required for on-site repairs, maintenance, and servicing of vehicles, machinery, and equipment. The mobility of gas air compressors allows service providers to bring their tools and compressed air source directly to the location of the service requirement.

5. Remote Job Sites:

Gas air compressors are well-suited for remote job sites or locations without access to electricity. They are commonly used in industries such as mining, oil and gas exploration, and remote construction projects. Gas air compressors power pneumatic tools, machinery, and drilling equipment in these environments, providing a reliable source of compressed air for operational needs.

6. Emergency and Backup Power:

In emergency situations or during power outages, gas air compressors can serve as a backup power source. They can power essential equipment and systems that rely on compressed air, such as emergency lighting, communication devices, medical equipment, and backup generators. Gas air compressors provide a reliable alternative power solution when electrical power is unavailable or unreliable.

7. Sandblasting and Surface Preparation:

Gas air compressors are used in sandblasting and surface preparation applications. They provide the high-pressure air necessary for propelling abrasive media, such as sand or grit, to remove paint, rust, or other coatings from surfaces. Gas air compressors offer the power and portability required for sandblasting operations in various industries, including automotive, metal fabrication, and industrial maintenance.

8. Off-Road and Outdoor Equipment:

Gas air compressors are commonly integrated into off-road and outdoor equipment, such as off-road vehicles, utility trucks, and recreational vehicles. They power air-operated systems, including air suspension systems, air brakes, air lockers, and air horns. Gas air compressors provide the necessary compressed air for reliable and efficient operation of these systems in rugged and outdoor environments.

Overall, gas air compressors have diverse applications in construction, agriculture, recreational activities, mobile service operations, remote job sites, emergency power backup, sandblasting, and various off-road and outdoor equipment. Their portability, versatility, and reliable power supply make them indispensable tools in numerous industries and activities.

China Best Sales Zw Series Lubricating Piston Compressor for Unloading, Loading, Tank Dumping, Residual Gas Recovery   air compressor CHINAMFG freightChina Best Sales Zw Series Lubricating Piston Compressor for Unloading, Loading, Tank Dumping, Residual Gas Recovery   air compressor CHINAMFG freight
editor by CX 2024-02-24

Recent Posts