Product Description


CZPT Oil-Injected Rotary Screw Compressors

 CWD 7-400 & CWD 7-four hundred PM
Electricity output: 7-four hundred kW / ten-five hundred hp
Delivery price: .8-71.2 m3/min / 28-2514 cfm
Stress variety: 7-thirteen bar / a hundred-190 psig


SIMPLICITY BUT NOT Straightforward

For 3 generations, clients from mechanical engineering, business and trade have relied on CZPT know-how when it comes to plHangZhou, building and manufacturing compressed air methods. They are completely informed of the reality that CZPT AIR is far more than just ordinary compressed air: utmost security, exceptional effectiveness, excellent quality, maximized adaptability together with trustworthy support are the substances to change CZPT AIR into air to work with – in China, in Asia and in far more than 102 nations around the world close to the planet.

The III era, the basis for cost-effective compressed air creation

The Know-How
Far more than a long time of know-how in producing for the compressed air marketplace. World extensive expertise in distinct compressed air apps have guided the improvement of consumer specified stationary screw compressors.

Complex Advancement for your Benefit
The gain of CZPT lies in its simplified building. Less elements are used. This implies a sixty% reduction in main and putting on elements and in excess of 70% less pipes and connections. In turn, this greatly decreases the threat of leakages, creating the program environmentally welcoming. Safe direct generate operation with out V-belt transmission.

The CZPT Screw Compressor operates in the pursuing way:
Ambient air is drawn through the intake filter and the multifunctional handle system into the screw compressor block. This block consists of a pair of screw rotors. The primary rotor, pushed by an electrical motor, normally takes the secondary rotor with it. The air is drawn in by the rotation of each of the interlocking rotors and is continuously compressed. During rotation, coolant is injected into the rotors and types a hydrostatic movie amongst the major and secondary rotors. The function of the coolant is to seal the rotors, lubricate the bearings and adsorb the compression heat. Ahead of compressed air leaves the compressor ( at eighty ºC approx.) it is separated from the coolant before becoming cooled in the aftercooler to approx.. 8ºC to 12ºC earlier mentioned the ambient temperature. The coolant then passes to the thermostatic handle block and filter, prior to entering the cooler exactly where it is cooled from approx.. 80ºC down to 50ºC. It is then injected again into the screw compressor block.

Direct travel via flexible coupling.
Entirely encapsulated CZPT screw compressor block.
Common electric powered motor Security Index IP23 and IP54.
User pleasant provider accessibility.
Leading high quality, washable, oil resistant audio insulation.
Ready for procedure, prewired and fully enclosed.
With working method selector swap Computerized-Off-Continuous.
Centrally mounted CZPT admirer offered for compressed air and CZPT coolers.
Compact and neat cupboard layout.

CZPT Gear:
Sense of rotation
A number of device control with automatic base load variety
Total motor protection
Mains isolator swap for wall mounting

CZPT these characteristics we offer a vast selection of compressed air equipment in reference to our compressor solution selection.
Vitality Restoration Techniques CROWNWELL-THERM
Compressed Air Filters
Compressed Air Dryers
Condensate Traps
Oil-H2o Separators
Compressed Air Receivers


Technological Technical specs CWD 7-400
(7.5-400kW / ten-500hp)

  • Unit overall performance measured in accordance to ISO 1217, Annex C, Edition 4 (2009)

Reference problems:
-Relative humidity %
-Complete inlet stress: 1 bar (a) (14.5 psi)
-Intake air temperature:  20°C, 68°F

  • Sound level measured according to ISO 2151:2004, procedure at max. running force and max. pace tolerance: ±3 dB(A)


Technical Technical specs CWD 7-four hundred PM
(7.5-400kW / ten-500hp)

  • Device efficiency calculated according to ISO 1217, Annex C, Edition 4 (2009)

Reference conditions:
-Relative humidity %
-Absolute inlet pressure: 1 bar (a) (14.5 psi)
-Intake air temperature:  20°C, 68°F

  • Noise stage calculated in accordance to ISO 2151:2004, operation at max. functioning stress and max. velocity tolerance: ±3 dB(A)
  • PM-Permanent Magnet


Technological Specs CWD 7-four hundred PM
(7.5-400kW / 10-500hp)

  • Unit overall performance measured in accordance to ISO 1217, Annex C, Edition 4 (2009)

Reference circumstances:
-Relative humidity %
-Absolute inlet strain: 1 bar (a) (fourteen.5 psi)
-Consumption air temperature:  20°C, 68°F

  • Noise level calculated according to ISO 2151:2004, procedure at max. running pressure and max. pace tolerance: ±3 dB(A)
  • 2S-Two Stage


what to see in an air compressor

If you want to buy an air compressor, you should know what to appear for. The kinds of air compressors on the industry are classified in accordance to their CFM score, security gadgets, and pumps. There are numerous distinctions amongst lubricated and oil-free air compressors that you should know prior to purchasing. To better realize the difference between these varieties of air compressors, study on. This article will guide you through these differences.


If you are seeking for a good quality air compressor, you have occur to the appropriate place. A great air compressor pump will offer higher stress for anything at all from tires to boats and a lot more. There are hundreds of various designs to pick from, and the great factor about getting 1 from a Chinese producer is that they have so numerous options. Much more importantly, Chinese producers can customize air products this sort of as air compressors at reduced costs.
A great top quality air pump is not going to split simply, but you are going to be in a position to use it for years. Selecting a large-quality pump will support you avoid numerous hassles on the street, this sort of as unplanned downtime and installation fees. Furthermore, a pump from the same producer as your air compressor is your best bet to guarantee ideal efficiency. Listed underneath are some suggestions for locating a high quality pump for your air compressor.
The air compressor is an essential but unremarkable invention. Without having them, our life would be entirely diverse. Without a pump, we can’t get sizzling water from central heating, nor can we get warmth from the refrigerator. We are unable to inflate bicycle tires, and we can’t refuel cars. Pumps are crucial to all varieties of devices. So why is it critical to select the appropriate solution? The response might shock you.
Various kinds of pumps are utilized for different purposes. Optimistic displacement pumps go a set quantity of fluid and direct it to a drain. This design and style makes certain constant flow at a consistent velocity irrespective of discharge stress. Centrifugal pumps operate differently. The impeller accelerates the fluid, changing the enter energy into kinetic energy. This variety of pump is most commonly utilised in mines, air conditioning, industrial vegetation, and flood control.

basic safety tools

There are a number of protection attributes you should verify when utilizing an air compressor. First, verify the connection of the air filter to the air. If they occur loose, areas could separate and result in damage. Another critical security function is the shut-off valve. When operating around compressed air, the shut-off valve ought to be inside of easy achieve and visibility. Moving elements and other tools must be secured with protecting covers. Verify security valve and replace ruined parts.
Rupture discs are copper discs located on the air cooler. When the air pressure exceeds a certain limit, it bursts. Fusible plugs contain resources that melt at high temperatures. The compressor need to have a lubricating oil pressure alarm and lower off the vacation signal. If these two basic safety devices fall short, the compressor need to be stopped instantly. The rupture disc must be inspected at least weekly to ensure it does not rupture beneath pressure.
If the stress stage is too large, and overcurrent security unit cuts electrical power to the motor. It also immediately shuts off the compressor when the hose ruptures or the air quantity exceeds a preset amount. The device must be installed on the air compressor to stop accidents. Its job is to safeguard the operator from damage. If workers do not follow these security actions, they could lead to products damage.
To guarantee basic safety when operating the air compressor, basic safety eyeglasses and gloves should be worn. Pressurized air can lead to eye harm, and crash goggles can offer a barrier to prevent this. Moreover, the self-retracting twine stops excursion dangers and reinforces excessive wire. You need to also maintain your hands and body away from the air nozzle. This will avert you from currently being sprayed with compressed air.

CFM Rating

An air compressor’s PSI and CFM ratings point out the strain and quantity it can produce. PSI stands for kilos for every sq. inch and actions the force and pressure contained in 1 sq. inch of air. These two indicators are equally essential when picking an air compressor. If you need to have a whole lot of compressed air for a specific application, you will want a increased psi compressor. Furthermore, if you are utilizing compressed air in a scaled-down application, a lower cfm compressor will not supply enough energy to fulfill your requirements.
When comparing diverse air compressors, be positive to pay out close focus to horsepower and CFM rankings. Although compressor power is vital for some responsibilities, it is not the most crucial aspect. The CFM ranking of an air compressor will determine how massive a venture it can manage and how extended it normally takes to demand. Make sure you understand the CFM and PSI ratings of your foreseeable future compressors, as not realizing these critical statistics can frustrate you and travel up costs.
In basic, it is greatest to select an air compressor with a CFM ranking higher than the dimensions of the air instrument. This will guarantee that the air compressor has enough stress to function several tools effectively at the same time. Although scaled-down CFM rankings may possibly be sufficient for more compact assignments, bigger resources this kind of as drills need a whole lot of air. Therefore, the increased the CFM, the larger and far more potent the tool.
When you understand the CFM of an air compressor, you can start off searching for the correct tool. You can check the CFM ranking of your air compressor online by commenting under. If you are not certain about the dimensions of your air resource, you can usually purchase a next air compressor. This is a excellent way to double the CFM of your air compressor! You are going to have a lot more air to do a lot more perform, and your compressor will very last more time.

Lack of oil and lubrication

Oil-cost-free air compressors have a scaled-down footprint and require much less routine maintenance than oil-lubricated air compressors. Though oil-lubricated air compressors are far more pricey and heavier than oil-cost-free air compressors, they are also best for stationary use. The positive aspects of oil-cost-free air compressors incorporate greater sturdiness and decrease upkeep costs. The rewards and drawbacks of each and every kind are discussed under.
Oil-free air compressors are generally quieter than oil-lubricated air compressors. Even so, you may possibly even now experience some sounds even though using it. To keep away from this, you must pick a peaceful consumption compressor. However, if you work up coming to a noisy compressor, you need to buy a muffler, an aftermarket filter that decreases compressor sound.
If you want to use the air compressor for a long time, the oil-totally free product is not the proper selection. Its Teflon coating wears off over time, specifically at severe temperatures. Moreover, oil-free of charge air compressors have a massive number of transferring parts that need normal maintenance, even though oil-filled air compressors are wonderful for individuals who do not want to invest in additional parts.
One more major difference among oil-free of charge and oil-lubricated air compressors is lubrication. Oil-lubricated air compressors call for normal lubrication whilst oil-cost-free air compressors are pre-lubricated. They have less components and are less costly. Oil-totally free air compressors are lighter than oil-lubricated air compressors. In addition to getting more affordable, oil-free of charge air compressors are far more powerful and sturdy.
Although oil-filled air compressors are more successful and resilient, they create a great deal of warmth. Nonetheless, they are also much more pricey and need typical oil changes. In addition, they are tough to transportation. They also want to be permanently mounted. These air compressors are also not transportable and demand a fixed area. So, contemplate your wants before deciding which type is very best for you. When you might be choosing an air compressor for your company, be confident to store all around.

sounds stage

If you are wondering what the sound stage of an air compressor is, the answer depends on your certain gear and functioning environment circumstances. Generally, air compressors generate forty to 90 decibels of sounds. Even though the reduce the decibel amount, the quieter the compressor will be. Greater, much more strong air compressors generate higher sound amounts than their minor brothers. But no make a difference how massive the air compressors are, it really is a good notion to use listening to security even though operating all around them.
When purchasing a new air compressor, the noise amount of the air compressor ought to be considered. Although this could seem to be like a modest problem, there are really a great deal of versions on these noisy machines. The most common variety of air compressor is the reciprocating piston pump. This design employs pistons comparable to an motor to rotate inside of a chamber. The piston moves rapidly and traps air proportional to its dimension. One-piston air compressors are usually noisier than twin-piston versions, also recognized as twin cylinders.
But even if you have the correct gear to protect your listening to, it truly is even now essential to know the sounds amount of an air compressor. Even if the sound is not quickly unsafe, it can even now lead to short term or long lasting listening to decline. This problem is named sounds-induced hearing reduction, and an air compressor with a seem degree of eighty or greater can cause everlasting hearing harm. You can stay away from possible hurt to your hearing and avert mishaps by merely paying out focus to the sounds stage of your air compressor.
Air compressors are inherently noisy, but if you get methods to lessen their sound stages, you can decrease disruption to neighbors and co-personnel. For example, putting in a sound enclosure in your perform area can prevent your air compressor from producing as significantly sound as prior to. Relying on your workspace, you can also try out installing a lengthy air hose, which will reduce seem levels by up to 25%.
China Custom CZPT Oil-Injected Screw Air Compressors     with high qualityChina Custom CZPT Oil-Injected Screw Air Compressors     with high quality

Water Injected Compressor

As one of the water injected compressor manufacturers, suppliers, and exporters of mechanical products, We offer water injected compressor and many other products.

Please get in touch with us for details.

Manufacturer supplier exporter of plastic water injected compressor.

Recent Posts