Active Member
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[China]
Address: No.1661 Jialuo road, Shengchuang Technology Park, jiading district, shanghai, China.
Contact name:Sue Chan
Shanghai Royal Machinery Co.,Ltd |
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Advantages of two-stage screw air compressors:
| ∎This latest generation of energy efficient air compressors |
| can SAVE 15 – 20% on your power bills.Our ground-breaking range |
| of DD Series ‘2 Stage’ rotary screw air compressors offer outstanding |
| energy savings when compared to conventional single-stage compressors. |
| ∎Our extensive range covers capacities from 15.8m³/min@6bar (55kW) up to |
| 65m³/min@8bar (315kW) and with pressures ranging up to 13 barg. |
| ∎This is by far the widest range of two-stage rotary screw air |
| compressors available! |
How two-stage screw air compressor saveing energy:
| Sample compressor 250kw 2-stage: |
| ∎Air capacity: 250kw single stage compressor 40m3/min @8bar; |
| while 250kw two-stage compressor 50m3/min @8bar. |
| ∎Power consumption: single stage compressor 250kw + 75kw can make |
| 50m3/min @8bar, so that 250kw two-stage compressor can save power 75kw, |
| and one compressor can work for many years,75kw will save quite a lot. |
| ∎Electric motor and inverter, 250kw two-stage compressor, with permanent |
| magnet motor, it's high frequency 150hz, it work quite good when compressor |
| not work at full load, and normally compressors will not work at full load all the |
| time, this way, permanent magnent motor will make no extra consumption as |
| fixed speed motors. |
| ∎ Price, 250kw two-stage PM & VSD compressor, | |||||
| it's price is less than 250kw+75kw single stage | |||||
| VSD compressors, while make 50m3/min @8bar. |
Full detail technical parameters:
| MODEL No. | Air flow (m3/min) | Power(KW) | Noise(Db) | Outlet size | Dimension(mm) | Weight(KG) | |||||
| 0.6Mpa | 0.7Mpa | 0.8Mpa | 1.0Mpa | Length | Width | Height | |||||
| DDM-22 | 4.8 | 4.6 | 4.5 | 3.8 | 22 | 68 | G11/4" | 1484 | 1126 | 1578 | 840 |
| DDM-30 | 7.4 | 6.63 | 6.5 | 4.5 | 30 | 68 | G11/4" | 1630 | 1214 | 1660 | 1050 |
| DDM-37 | 8 | 7.65 | 7.5 | 6.0 | 37 | 68 | G11/4" | 1630 | 1214 | 1660 | 1050 |
| DDM-45 | 11.2 | 10.5 | 10.3 | 7.3 | 45 | 70 | G2" | 1834 | 1290 | 1810 | 1353 |
| DDM-55 | 15.8 | 13.6 | 12.3 | 9.5 | 55 | 70 | G2" | 2300 | 1300 | 1830 | 1534 |
| DDM-75 | 16.5 | 16 | 15.5 | 12.8 | 75 | 72 | G2" | 2300 | 1300 | 1830 | 1700 |
| DDM-90 | 21 | 20.7 | 19.5 | 15 | 90 | 72 | DN65 | 2400 | 1630 | 1980 | 2080 |
| DDM-110 | 25.5 | 24.8 | 24 | 19.3 | 110 | 72 | DN65 | 2400 | 1630 | 1980 | 2120 |
| DDM-132 | 30 | 29 | 28 | 23 | 132 | 78 | DN80 | 2800 | 1828 | 2150 | 4850 |
| DDM-160 | 35 | 34 | 33.5 | 27.5 | 160 | 78 | DN80 | 2800 | 1828 | 2150 | 5000 |
| DDM-185 | 40 | 39 | 38 | 32.5 | 185 | 78 | DN100 | 3000 | 1900 | 1930 | 5900 |
| DDM-200 | 44 | 43 | 42.5 | 37 | 200 | 78 | DN100 | 3000 | 1900 | 1930 | 6200 |
| DDM-220 | 52.3 | 51.5 | 47 | 42 | 220 | 80 | DN125 | 3860 | 2130 | 2380 | 8500 |
| DDM-250 | 55.3 | 54 | 51 | 45.5 | 250 | 80 | DN125 | 3860 | 2130 | 2380 | 8650 |
More detail photos of our 2-stage screw air compressors:
Long interval maintenance periods:
Nearly ideal isothermal compression, direct driven method, smart configuration and precision component design and machining, long bearing service life, all of the above essentially extends interval between regular periodical maintenance.
Shanghai Royal Machinery Co.,Ltd is a high-tech enterprise which specialized in sales and service of compressed air system equipment, and after-treatment equipment, booster compressor, diesel generator and drying equipment, etc.
We have an experienced team. It not only provide high-quality and high-efficiency compressors for users but also provide the best solution for air system equipment during before-sale, selling and after-sale.
Welcome to contact us for inquires and quotation.
All of our screw air compressors are packed by export standard plywood case:
Because of screw air compressor package volume and weight, most of our screw air compressors are shipped by sea.
Wecome to contact us for more details, we will offer compressor details, oil free screw air compressor use manual, oil free screw air compressor configuration list, oil free screw air compressor instruction drawings, spare parts list, installation drawings, technical support and maintenance training.
