Product Description

High Quality Evi Heat Pumps with CE, SGS Certification
We are a heat pump manufactures! The Advantages as the following
1) Generally cost less to operate than other types of conventional heating systems, save your electricity or gas bills.
2) Operate at a high efficiency with no flames, fumes, or flues; Water and electricity isolated
3) Transfer heat that’s already in the environment; Low CO2 emissions.
4) With intelligent control systems which convenient and simple operation
5) Provide hot water no matter in cloudy day, snowy day or at night, unlike solar collectors which have to be facing the sun.
6) Wide application
7) It can be applied to sanitary hot water, house heating and so on.

Competitive price heat pumps for sale
Product Description:
1. Five modes:
Hot water, Heating, Cooling, Heating Hot water, Cooling Hot water.
2. LCD display wire controller.
3. Heating and cooling control combined with room temperature controller.
4. Control solar collector working(one phase units).
5. Freely set opening cycle time in advance.
6. Unit runs automatically according to set water temperature or indoor temp…
7. Can control the auxiliary heating (e. G. Electric heating).
8. With hot water supply control(three phase units).
9. With water return control, to avoid waste of cold water or waiting.
10. Water Level Display and can be adjusted freely(three phase units).
11. Flow switch for water flow protection.
12. Heat-exchanger cycle technology to improve low temperature operation.
13. Automatic prevent freezing in the winter.
14. Automatic defrosting.
15. Use the high-temperature compressor(T3 condition).
16. Expansion valve regulates flow of refrigerant precisely.
17. Air exchanger(Fins-coil) with hydrophilic coating.
18. Water side equired with tube in tube exchanger or EST high efficiency exchanger.
19. Modular design, free combination(three phase units).

R417A/R407C/R404A/R410A/R22/R134A or chilled water
Condenser: Double-pipe heat exchanger.
Evaporator: Plate heat exchanger. The heat source is the water.
Throttle unit: Electronic expansion valve / Thermal expansion valve/ Capillary
Body: Spray coating metal plate (Stainless steel body should add price)

1) Generally cost less to operate than other types of conventional heating systems, save your electricity or gas bills.
2) Operate at a high efficiency with no flames, fumes, or flues; Water and electricity isolated
3) Transfer heat that’s already in the environment; Low CO2 emissions.
4) With intelligent control systems which convenient and simple operation
5) Provide hot water no matter in cloudy day, snowy day or at night, unlike solar collectors which have to be facing the sun.
6) It can be applied to sanitary hot water, house heating and so on.


    GT-WKR Series-Roof Top AH Specifiaction 2
Model    GT-WKR- 40 50 60 70 90 110 120
Specification Cooling capacity 1* kW 42.0 52.8 61.2 70.2 87.5 105.1 122.5
Heating capacity  2* kW 44.1 55.4 62.5 73.8 92.8 112.0 130.0
Supply air 3* m3/h 7000 8600 10000 12000 14500 17000 20000
Static pressure 3* Pa 300 300 300 350 350 400 400
Noise 4* dB(A) 68 69 69 70 71 72 72
Power 3N-380V-50Hz
Total capacity 17.24 20.72 23.0 29.76 39.1 44.66 51.58
Color White
ooling system Compressor Type Efficient scroll closed
Quantity 2 2 2 2 2 4 4
Supply air fan Type Low noise centrifugal type
Capacity kW 2.2 3 4 4 5.5 7.5 7.5
Evaporator Type Inner grooved copper tube and aluminum fin
Fin type 5* Slotted fin hydrophilic aluminum fin
Condenser Type Inner grooved copper tube and aluminum fin
Fin type 5* Rippled hydrophilic aluminum fin
Condenser fan Type Low noise axial type
Quantity 2 2 2 4 4 4 4
Refrigerant Refrigerant R22/R407C
Refrigerant control External balance type thermal expansion valve
Air filter Initially effect plate filter
Dimensions L mm 2200 2600 2600 3200 3200 6000 6000
W mm 1800 2200 2200 2200 2200 2300 2300
H mm 1520 1700 1700 1900 1900 2300 2300
Weight kg 850 1100 1250 1400 1650 1850 2200

Note: for further information please send me email.

Ms. Echo Lee



what to see in an air compressor

If you need to buy an air compressor, you should know what to look for. The types of air compressors on the market are classified according to their CFM rating, safety devices, and pumps. There are several differences between lubricated and oil-free air compressors that you should know before buying. To better understand the difference between these types of air compressors, read on. This article will guide you through these differences.


If you are looking for a quality air compressor, you have come to the right place. A good air compressor pump will provide high pressure for anything from tires to boats and more. There are hundreds of different models to choose from, and the great thing about buying 1 from a Chinese manufacturer is that they have so many options. More importantly, Chinese manufacturers can customize air equipment such as air compressors at low prices.
A good quality air pump won’t break easily, but you’ll be able to use it for years. Choosing a high-quality pump will help you avoid many hassles on the road, such as unplanned downtime and installation costs. Plus, a pump from the same manufacturer as your air compressor is your best bet to ensure optimum performance. Listed below are some tips for finding a quality pump for your air compressor.
The air compressor is an important but unremarkable invention. Without them, our lives would be completely different. Without a pump, we can’t get hot water from central heating, nor can we get heat from the refrigerator. We can’t inflate bicycle tires, and we can’t refuel cars. Pumps are vital to all kinds of machines. So why is it important to choose the right product? The answer may surprise you.
Different types of pumps are used for different applications. Positive displacement pumps move a fixed volume of fluid and direct it to a drain. This design ensures constant flow at a constant speed regardless of discharge pressure. Centrifugal pumps work differently. The impeller accelerates the fluid, converting the input energy into kinetic energy. This type of pump is most commonly used in mines, air conditioning, industrial plants, and flood control.

safety equipment

There are several safety features you should check when using an air compressor. First, check the connection of the air filter to the air. If they come loose, parts may separate and cause injury. Another important safety feature is the shut-off valve. When working near compressed air, the shut-off valve should be within easy reach and visibility. Moving parts and other equipment must be protected with protective covers. Check safety valve and replace damaged parts.
Rupture discs are copper discs located on the air cooler. When the air pressure exceeds a certain limit, it bursts. Fusible plugs contain materials that melt at high temperatures. The compressor should have a lubricating oil pressure alarm and cut off the trip signal. If these 2 safety devices fail, the compressor should be stopped immediately. The rupture disc should be inspected at least weekly to ensure it does not rupture under pressure.
If the pressure level is too high, and overcurrent protection device cuts power to the motor. It also automatically shuts off the compressor when the hose ruptures or the air volume exceeds a preset level. The device should be installed on the air compressor to prevent accidents. Its job is to protect the operator from harm. If employees do not follow these safety measures, they may cause equipment damage.
To ensure safety when operating the air compressor, safety glasses and gloves should be worn. Pressurized air can cause eye injury, and crash goggles can provide a barrier to prevent this. Additionally, the self-retracting cord prevents trip hazards and reinforces excess cord. You should also keep your hands and body away from the air nozzle. This will prevent you from being sprayed with compressed air.

CFM Rating

An air compressor’s PSI and CFM ratings indicate the pressure and volume it can deliver. PSI stands for pounds per square inch and measures the force and pressure contained in 1 square inch of air. These 2 indicators are equally important when choosing an air compressor. If you need a lot of compressed air for a specific application, you will need a higher psi compressor. Likewise, if you are using compressed air in a smaller application, a low cfm compressor will not provide enough power to meet your needs.
When comparing different air compressors, be sure to pay close attention to horsepower and CFM ratings. While compressor power is essential for some tasks, it is not the most important aspect. The CFM rating of an air compressor will determine how big a project it can handle and how long it takes to charge. Make sure you understand the CFM and PSI ratings of your future compressors, as not knowing these important statistics can frustrate you and drive up costs.
In general, it is best to choose an air compressor with a CFM rating higher than the size of the air tool. This will ensure that the air compressor has enough pressure to work multiple tools efficiently at the same time. While smaller CFM ratings may be sufficient for smaller projects, larger tools such as drills require a lot of air. Therefore, the higher the CFM, the larger and more powerful the tool.
Once you understand the CFM of an air compressor, you can start looking for the right tool. You can check the CFM rating of your air compressor online by commenting below. If you’re not sure about the size of your air tool, you can always buy a second air compressor. This is a great way to double the CFM of your air compressor! You’ll have more air to do more work, and your compressor will last longer.

Lack of oil and lubrication

Oil-free air compressors have a smaller footprint and require less maintenance than oil-lubricated air compressors. Although oil-lubricated air compressors are more expensive and heavier than oil-free air compressors, they are also ideal for stationary use. The benefits of oil-free air compressors include greater durability and lower maintenance costs. The advantages and disadvantages of each type are discussed below.
Oil-free air compressors are generally quieter than oil-lubricated air compressors. However, you may still experience some noise while using it. To avoid this, you should choose a quiet intake compressor. However, if you work next to a noisy compressor, you should buy a muffler, an aftermarket filter that reduces compressor noise.
If you want to use the air compressor for a long time, the oil-free model is not the right choice. Its Teflon coating wears off over time, especially at extreme temperatures. Additionally, oil-free air compressors have a large number of moving parts that require regular maintenance, while oil-filled air compressors are great for those who don’t want to invest in extra parts.
Another major difference between oil-free and oil-lubricated air compressors is lubrication. Oil-lubricated air compressors require regular lubrication whereas oil-free air compressors are pre-lubricated. They have fewer parts and are cheaper. Oil-free air compressors are lighter than oil-lubricated air compressors. In addition to being more affordable, oil-free air compressors are more powerful and durable.
While oil-filled air compressors are more efficient and durable, they generate a lot of heat. However, they are also more expensive and require regular oil changes. Furthermore, they are difficult to transport. They also need to be permanently installed. These air compressors are also not portable and require a fixed location. So, consider your needs before deciding which type is best for you. When you’re choosing an air compressor for your business, be sure to shop around.

noise level

If you are wondering what the noise level of an air compressor is, the answer depends on your specific equipment and working environment conditions. Typically, air compressors produce 40 to 90 decibels of noise. Although the lower the decibel level, the quieter the compressor will be. Larger, more powerful air compressors produce higher noise levels than their little brothers. But no matter how big the air compressors are, it’s a good idea to wear hearing protection while working around them.
When purchasing a new air compressor, the noise level of the air compressor should be considered. While this may seem like a small problem, there are actually a lot of variations on these noisy machines. The most common type of air compressor is the reciprocating piston pump. This model uses pistons similar to an engine to rotate inside a chamber. The piston moves quickly and traps air proportional to its size. Single-piston air compressors are generally noisier than twin-piston models, also known as twin cylinders.
But even if you have the proper equipment to protect your hearing, it’s still important to know the noise level of an air compressor. Even if the noise is not immediately dangerous, it can still cause temporary or permanent hearing loss. This condition is called noise-induced hearing loss, and an air compressor with a sound level of 80 or higher can cause permanent hearing damage. You can avoid potential damage to your hearing and prevent accidents by simply paying attention to the noise level of your air compressor.
Air compressors are inherently noisy, but if you take steps to reduce their noise levels, you can minimize disruption to neighbors and co-workers. For example, installing a sound enclosure in your work area can prevent your air compressor from making as much noise as before. Depending on your workspace, you can also try installing a long air hose, which will reduce sound levels by up to 25%.
China High Quality Evi Heat Pumps with CE, SGS Certification  China High Quality Evi Heat Pumps with CE, SGS Certification


Co2 air compressor

As one of the co2 air compressor manufacturers, suppliers, and exporters of mechanical products, We offer co2 air compressors and many other products.

Please get in touch with us for details.

Manufacturer supplier exporter of co2 air compressor.

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