China Good quality CHINAMFG Piston Air Compressor Screw Air Compressor for Spray Booth Spray Gun Paint Booth Garage Equipment Auto Repair Shop Auto Maintenance Shop with Best Sales

Product Description

WLD Screw Air Compressor,Air Dryer,Air Tank and Filter

1. Screw Air Compressor

Screw Air Compressor A Series
Model WLD-10A WLD-15A WLD-20A WLD-30A WLD-40A WLD-50A
Air volume/Air pressure(m3/min/Mpa) 1.35/0.7 1.8/0.7 2.5/0.7 3.8/0.7 5.2/0.7 6.5/0.7
1.2/0.8 1.6/0.8 2.3/0.8 3.4/0.8 5.0/0.8 6.1/0.8
1/1.0 1.3/1.0 2/1.0 3.1/1.0 4.3/1.0 5.5/1.0
0.8/1.2 1/1.2 1.7/1.2 2.7/1.2 3.8/1.2 4.9/1.2
Ambient temperature(ºC) -5~+45ºC
Cooling way air cooling
Discharge temperature(ºC) ambient temperature <15ºC
Lubrication oil(L) 6 12 18 20 20 29
Noise(dBA) 66±2 68±2
Driving way  belt drive belt drive  belt drive direct drive
Electricity(V/ph/Hz) 380/3/50
Power(KW) 7.5 11 15 22 30 37
Starting method Y-△Starter
Dimension(mm) L 960 1100 1100 1380 1500 1500
W 580 710 710 850 1000 1000
H 770 1100 1100 1250 1350 1350
Net Weight(kg) 178 327 337 500 683 683
Outlet pipe dia(inch) 1/2″ 1″ 1″ 5/4″ 3/2″ 3/2″

Belt drive screw air compressor
German belt, with a unique tension control system, is easy to maintain and has longer life and higher efficient transmission compare with other belt which makes drive system more stable and reduce maintenance cost.

Direct drive screw air compressor

Connected with rotor, motor and it’s outer case form a unit which can achieve zero maintenance. Besides, due to less spare parts, direct drive has less transmission loss to make it more stable and get longer life.

2.Air dryer

Refrigerated air dryer

  1. Low dew point-pressure dew point as low as 5ºC, outlet dew point can reach 15ºC or lower on standard condition.
  2. High-efficiency pre cooling regenerator-reduce the load of evaporator by increasing outlet temp by 10-15ºC and decreasing inlet temp by 8-12ºC
  3. Colliding whirlwind air-water separator-air and water can be completely separated at dew point.
  4. Heat bypass valve-balance pressure, reduce load of compressor, decrease power loss, ensure performance of dryer even at low temperature environment.
  5. Pressure protection switch-avoid damage to dryer compressor if any fault
  6. Protective welding way-ensure cleanness in cooling system and avoid to block system
  7. Good quality cooling spare parts-Panasonic, Cope-land, Tecumseh, CHINAMFG compressor, CHINAMFG expansion valve, Saginomiya solenoid valve.
  8. Increased condenser-15-20% bigger than normal condenser make sure refrigerant liquefy completely at serious environment.
  9. Compact outline-small size, less weight, easy to install and disassemble
  10. Strict QC-test completely before leaving factory to ensure 100% good products.

Air Dryer Technical Specification

Model WLD-10 WLD-15 WLD-20 WLD-30 WLD-50
Air volume(m3/min) 1.5 2 2.5 3.8 6.5
Working condition A. entrance temp 80ºC  B. environment temp 45ºC  C. air pressure 10 kg/cm2
Pressure dewpoint 2~5ºC
Refrigerant R22
Refrigerant Motor(HP) 1/3 1/2 3/4 1 1~1/2
Electricity AC 220V 50
Pipe dia(inch) 1 1 1/2 1~1/2 2
Dimension(mm)L 700 700 700 1000 900
W 420 420 420 500 500
H 710 710 760 850 900
Weight(kg) 42 50 60 80 90

3.Air tank


Precision filter
Filter out ozone, gas and particulates in compressed air.
Multi filter material include borosilicate fiber, glass fiber, acticarbon fiber, unwoven fabric and stainless steel mesh.
C filter, remove most liquid and 3 μm above particulates, oil content as low as 5ppm and little water, dust and oil mist.
T filter, remove 1μm above liquid and particulates, oil content reach 0.5ppm.
A filter, remove 0.01μm above liquid and particulates, oil content reach 0.001ppm
Sample: Economic type(A series)
Belt drive WLD-10A


WLD Other products-Spray Booth:


About us

 Product Showroom
Meeting Room


Q1:Are you Manufacturer or Trading Company?
A:We are a professional manufacturer with our own export department.
Our factory was established in 2000.

Q2:Where is your factory located? How can I visit there? :
A:Our company is located in HangZhou City, China.All clients, from home and abroad,are warmly welcomed to visit us.

Q3. What is your terms of packing?

A: Generally, we pack our goods by thicker bubble paper, some of them are packed by carton.

Q4. What is your terms of payment?
A: By T/T, 30% as deposit for production, and 70% balance before delivery. We’ll show you the photos of the products and packages before you pay the balance.

Q5. What is your terms of delivery?
A: Normally our quotation is under FOB HangZhou, but we also accept EXW, FOB, CFR, CIF, DDU. 

Q6. How about your delivery time?
A: Generally, it will take 10 to 15 days after receiving full payment. If your voltage is different from 380V/3PH/50Hz, the delivery time will be around 20 days for custom-made motors or electric components. 

Q7.Can we customize our product?
A:Yes,you can.Customized material and standard are acceptable. We can provide different standards according to your market and favor.

Q8: How do you make our business long-term and good relationship?
A1. We keep good quality and competitive price to ensure our customers benefit ;
A2. We respect every customer as our friend and we sincerely do business and make friends with them, 
no matter where they come from.


Q9: Why choose WeiLongDa?

A1. Wallboard – All WLD spray booth wall panels are anti-fire EPS,foam density is 14kg/m²;

A2. Front door – with aluminum view window, made of 50mm EPS, 0.8mm galvanized steel with plastic spray. Front door is like a face, beautiful, strong, practical, leakproof, anti-rusting & long-lasting, it means your workshop will attract more business and you will spend less time and money on spray booth maintenance;

A3. Steel structure – 4000kg vehicle can safely get in and out of the booth without worried, no noise, vibration is minimized, no air leakage, dust free, clean and efficient, we use thick galvanized steel pipes to make our spray booth cabinet, so our cabinet is anti-rusting;

A4. Heat exchanger – 2 layers radia pipes structure with 2 CHINAMFG welded by experienced skillful welder, it is high efficiency & safe;

A5. Motor fan – introduced from Simens technology with large air flow at low noise, high quality bearing, full cooper coils, rock wool sound proff cover;

A6. Components finishing – since CHINAMFG factory has its own powder coating facility, all components seen were with powder coated treatment. Strong anti-rusting finishing, not just good looking but also make a durable spray booth.

A7. Advantages of CHINAMFG control panel – 1) dust free 2) user can intuitively see the booth actual operation status from the panel 3) spray temperature and baking temperature were set in internal memory, no need to reset temperature when change the mode 4) digital pressure display with over pressure alarm 5) over heat fire alarm system 6) we offer 1 year warranty, life-long maintenance for our booth;

A8. Small details – 1) hinge type ceiling filter frame, 1 person can handle changing filter 2) flter is self sealing no need screw to fix 3) fan filter is easy to access with small door and handle 4) front door locking pin with position locking 5) infrared lamp with rock wool isolation 6) infrared lamp install with isolation distance 7) infrared lamp with door open security sensor switch 8) infrared lamp with wire entrance prastic screw.

After-sales Service: Online and Others
Warranty: 12 Months
Lubrication Style: Lubricated
Cooling System: Air Cooling
Power Source: AC Power
Type: Screw Air Compressor


air compressor

How are air compressors employed in the petrochemical industry?

Air compressors play a vital role in the petrochemical industry, where they are employed for various applications that require compressed air. The petrochemical industry encompasses the production of chemicals and products derived from petroleum and natural gas. Here’s an overview of how air compressors are utilized in the petrochemical industry:

1. Instrumentation and Control Systems:

Air compressors are used to power pneumatic instrumentation and control systems in petrochemical plants. These systems rely on compressed air to operate control valves, actuators, and other pneumatic devices that regulate processes such as flow control, pressure control, and temperature control. Compressed air provides a reliable and clean source of energy for these critical control mechanisms.

2. Pneumatic Tools and Equipment:

Petrochemical plants often utilize pneumatic tools and equipment for various tasks such as maintenance, repair, and construction activities. Air compressors supply the necessary compressed air to power these tools, including pneumatic drills, impact wrenches, grinders, sanders, and painting equipment. The versatility and convenience of compressed air make it an ideal energy source for a wide range of pneumatic tools used in the industry.

3. Process Air and Gas Supply:

Petrochemical processes often require a supply of compressed air and gases for specific applications. Air compressors are employed to generate compressed air for processes such as oxidation, combustion, and aeration. They may also be used to compress gases like nitrogen, hydrogen, and oxygen, which are utilized in various petrochemical reactions and treatment processes.

4. Cooling and Ventilation:

Petrochemical plants require adequate cooling and ventilation systems to maintain optimal operating conditions and ensure the safety of personnel. Air compressors are used to power cooling fans, blowers, and air circulation systems that help maintain the desired temperature, remove heat generated by equipment, and provide ventilation in critical areas.

5. Nitrogen Generation:

Nitrogen is widely used in the petrochemical industry for applications such as blanketing, purging, and inerting. Air compressors are utilized in nitrogen generation systems, where they compress atmospheric air, which is then passed through a nitrogen separation process to produce high-purity nitrogen gas. This nitrogen is used for various purposes, including preventing the formation of explosive mixtures, protecting sensitive equipment, and maintaining the integrity of stored products.

6. Instrument Air:

Instrument air is essential for operating pneumatic instruments, analyzers, and control devices throughout the petrochemical plant. Air compressors supply compressed air that is treated and conditioned to meet the stringent requirements of instrument air quality standards. Instrument air is used for tasks such as pneumatic conveying, pneumatic actuators, and calibration of instruments.

By employing air compressors in the petrochemical industry, operators can ensure reliable and efficient operation of pneumatic systems, power various tools and equipment, support critical processes, and maintain safe and controlled environments.

air compressor

What is the energy efficiency of modern air compressors?

The energy efficiency of modern air compressors has significantly improved due to advancements in technology and design. Here’s an in-depth look at the energy efficiency features and factors that contribute to the efficiency of modern air compressors:

Variable Speed Drive (VSD) Technology:

Many modern air compressors utilize Variable Speed Drive (VSD) technology, also known as Variable Frequency Drive (VFD). This technology allows the compressor motor to adjust its speed according to the compressed air demand. By matching the motor speed to the required airflow, VSD compressors can avoid excessive energy consumption during periods of low demand, resulting in significant energy savings compared to fixed-speed compressors.

Air Leakage Reduction:

Air leakage is a common issue in compressed air systems and can lead to substantial energy waste. Modern air compressors often feature improved sealing and advanced control systems to minimize air leaks. By reducing air leakage, the compressor can maintain optimal pressure levels more efficiently, resulting in energy savings.

Efficient Motor Design:

The motor of an air compressor plays a crucial role in its energy efficiency. Modern compressors incorporate high-efficiency electric motors that meet or exceed established energy efficiency standards. These motors are designed to minimize energy losses and operate more efficiently, reducing overall power consumption.

Optimized Control Systems:

Advanced control systems are integrated into modern air compressors to optimize their performance and energy consumption. These control systems monitor various parameters, such as air pressure, temperature, and airflow, and adjust compressor operation accordingly. By precisely controlling the compressor’s output to match the demand, these systems ensure efficient and energy-saving operation.

Air Storage and Distribution:

Efficient air storage and distribution systems are essential for minimizing energy losses in compressed air systems. Modern air compressors often include properly sized and insulated air storage tanks and well-designed piping systems that reduce pressure drops and minimize heat transfer. These measures help to maintain a consistent and efficient supply of compressed air throughout the system, reducing energy waste.

Energy Management and Monitoring:

Some modern air compressors feature energy management and monitoring systems that provide real-time data on energy consumption and performance. These systems allow operators to identify energy inefficiencies, optimize compressor settings, and implement energy-saving practices.

It’s important to note that the energy efficiency of an air compressor also depends on factors such as the specific model, size, and application. Manufacturers often provide energy efficiency ratings or specifications for their compressors, which can help in comparing different models and selecting the most efficient option for a particular application.

Overall, modern air compressors incorporate various energy-saving technologies and design elements to enhance their efficiency. Investing in an energy-efficient air compressor not only reduces operational costs but also contributes to sustainability efforts by minimizing energy consumption and reducing carbon emissions.

air compressor

How do you choose the right size of air compressor for your needs?

Choosing the right size of air compressor is essential to ensure optimal performance and efficiency for your specific needs. Here are some factors to consider when selecting the appropriate size:

1. Air Demand: Determine the air demand requirements of your applications. Calculate the total CFM (Cubic Feet per Minute) needed by considering the air consumption of all the pneumatic tools and equipment that will be operated simultaneously. Choose an air compressor with a CFM rating that meets or exceeds this total demand.

2. Pressure Requirements: Consider the required operating pressure for your applications. Check the PSI (Pounds per Square Inch) rating of the tools and equipment you will be using. Ensure that the air compressor you choose can deliver the necessary pressure consistently.

3. Duty Cycle: Evaluate the duty cycle of the air compressor. The duty cycle represents the percentage of time the compressor can operate within a given time period without overheating or experiencing performance issues. If you require continuous or heavy-duty operation, choose a compressor with a higher duty cycle.

4. Power Source: Determine the available power source at your location. Air compressors can be powered by electricity or gasoline engines. Ensure that the chosen compressor matches the available power supply and consider factors such as voltage, phase, and fuel requirements.

5. Portability: Assess the portability requirements of your applications. If you need to move the air compressor frequently or use it in different locations, consider a portable or wheeled compressor that is easy to transport.

6. Space and Noise Constraints: Consider the available space for installation and the noise restrictions in your working environment. Choose an air compressor that fits within the allocated space and meets any noise regulations or requirements.

7. Future Expansion: Anticipate any potential future expansions or increases in air demand. If you expect your air demand to grow over time, it may be wise to choose a slightly larger compressor to accommodate future needs and avoid the need for premature replacement.

8. Budget: Consider your budgetary constraints. Compare the prices of different air compressor models while ensuring that the chosen compressor meets your specific requirements. Keep in mind that investing in a higher-quality compressor may result in better performance, durability, and long-term cost savings.

By considering these factors and evaluating your specific needs, you can choose the right size of air compressor that will meet your air demand, pressure requirements, and operational preferences, ultimately ensuring efficient and reliable performance.

China Good quality CHINAMFG Piston Air Compressor Screw Air Compressor for Spray Booth Spray Gun Paint Booth Garage Equipment Auto Repair Shop Auto Maintenance Shop   with Best SalesChina Good quality CHINAMFG Piston Air Compressor Screw Air Compressor for Spray Booth Spray Gun Paint Booth Garage Equipment Auto Repair Shop Auto Maintenance Shop   with Best Sales
editor by CX 2023-12-12