DESCRIPTION
The 2SK Series Two-Stage Liquid Ring Vacuum Pumps are designed to perform like two sets of SK series water ring vacuum pumps. Due to the limitations of SK series vacuum pumps, which can only reach a maximum vacuum of -700mmHg, China developed the 2SK series water ring vacuum pump in the 1980s to meet the demands for high vacuum and large pumping speed under high vacuum conditions.
ADVANTAGE 1. Compared with SK water vacuum pumps, the 2SK series offers higher vacuum and pumping speed. 2. The design is simple, making maintenance easy and cost-effective. 3. The primary working medium is water, resulting in low maintenance costs. 4. These pumps are widely used across various industries, including handling water vapor, flammable, explosive gases, and gases containing small amounts of dust and liquid. 5. They can operate effectively in harsh environments. FEATURES 1. The SK and 2SK series water ring vacuum pumps are suitable for exhausting both ordinary gases and condensable gases (such as water vapor). Their isothermal compression feature allows them to safely handle flammable and explosive gases. When made from anti-corrosion materials, they can also be used for corrosive gas applications. 2. The 2YK series liquid ring vacuum pumps offer even higher vacuum performance and broader applicability. By selecting appropriate working media, they can efficiently pump different types of gases, making them suitable for a wide range of applications. 3. These pumps run smoothly, with low noise and energy consumption. They are 30% more energy-efficient compared to water jet and water vapor jet pumps. PARAMETER
APPLICATIONS
These pumps are ideal for vacuum drying, vacuum degassing, vacuum concentration, vacuum evaporation, and vacuum impregnation processes in chemical, pharmaceutical, metallurgical, food, medical, textile, papermaking, and electrical industries. They can be combined with Roots Vacuum Pumps and atmospheric jet pumps to achieve high vacuum, high efficiency, and low power consumption.
Regular Selection for Water/Liquid Ring Vacuum Pump
1. Based on the vacuum value:
(1) If the pump is operated for long time with the inlet pressure range between 1.3×10â´~1×10âµ Pa (between 100 and 760 Torr), choose the SK series water ring vacuum pump.
(2) If the pump is operated for long time with the inlet pressure range between 5×10³~1.3×10ⴠPa (between 40 and 100 Torr), choose the 2SK series water ring vacuum pump.
(3) If the pump is operated for long time with the inlet pressure range between 1×10³~1.3×10ⴠPa (between 8 and 100 Torr), choose the 2YK series liquid ring vacuum pump.
2. Working Media
There are four principles to choose working media (i.e., ring liquids):
(1) Lower saturated steam pressure
(2) Lower viscosity
(3) Stable physical & chemical features; no chemical reaction with the pumped gas; no corrosion to the pump; no pollution to the environment.
(4) Economy
If water is selected as the working medium, the best supply water temperature should be lower than or equal to 15°C; the highest should not exceed 40°C. While transformer oil or other low viscosity and saturated vapor pressure industrial oils are used as the working medium, the general supply temperature should not exceed 40°C, and the working media temperature inside the pump chamber should not exceed 60°C. When using a liquid with a lower boiling point as the working medium under special circumstances, a cooling unit must be equipped to cool down the working medium to ensure that the max temperature is 30ºC-50ºC, lower than the boiling point. For the closed circulation system of working media, the liquid storage unit and cooler must be equipped, and the gas-liquid separator must be installed at the outlet. The mechanical seal should be used for dynamic sealing of the shaft.
3. Choose the dynamic seal of the shaft:
Choose the packing seal in general occasions; choose the mechanical seal when the pump is used in a no-leak occasion.
4. Choose the material of the part that the gas passed:
(1) For the non-anti-corrosion pump, the shaft is made of 45# steel or 40Cr, other parts are made of cast iron or brass.
(2) For the anti-corrosion pump, the parts that the gas passed should be made of stainless steel 304 and 306, or other material suitable for the respective corrosive gas, or the parts should be coated with anti-corrosion coating.
5. The motor should be selected based on pumping pressure.
If the pump is used for vacuuming while transferring gas, the pressure of the pump outlet exceeds the standard atmosphere pressure.
When the outlet pressure exceeds 0.15MPa, the special double-stage liquid ring compressor should be chosen and not the vacuum pump refitted. The power of the equipped motor should be increased obviously. And the special gas-liquid separator and auto-drain unit should be equipped too.
When the outlet pressure is below 0.15MPa, it can use the vacuum pump refitted as a compressor. The power of the equipped motor should be increased properly.
6. Composition methods of the water ring vacuum pump system
The open circulation system should be used if the working liquid in the outlet need not be circulated or partially circulated.
The closed circulation system should be used if the working liquid in the outlet must be circulated.
Sea Port: Ningbo/Shanghai, China Standard: CE Mark, Spare Parts Of High Level Delivery: Normally according to our factory production schedule, but we can follow your first order time Warranty: If the pump appears quality problems, free replacements of spare parts will be offered within one year WE CAN PROVIDE YOU 1. On-time Delivery, with More Choice 2. Perfect Technical Support 3. Customized Vacuum Solutions and Service 4. Samples Available 5. Long Quality Guarantee 6. Fast Response to Customers' Feedback in 12 hours DEVELOPMENT VACUUM EQUIPMENT CO., LTD ADD: DONGGANG INDZONE, TAIZHOU, ZHEJIANG, CHINA PC: 317106 TEL: +86-576-83598308 FAX: +86-576-83598309
ADVANTAGE 1. Compared with SK water vacuum pumps, the 2SK series offers higher vacuum and pumping speed. 2. The design is simple, making maintenance easy and cost-effective. 3. The primary working medium is water, resulting in low maintenance costs. 4. These pumps are widely used across various industries, including handling water vapor, flammable, explosive gases, and gases containing small amounts of dust and liquid. 5. They can operate effectively in harsh environments. FEATURES 1. The SK and 2SK series water ring vacuum pumps are suitable for exhausting both ordinary gases and condensable gases (such as water vapor). Their isothermal compression feature allows them to safely handle flammable and explosive gases. When made from anti-corrosion materials, they can also be used for corrosive gas applications. 2. The 2YK series liquid ring vacuum pumps offer even higher vacuum performance and broader applicability. By selecting appropriate working media, they can efficiently pump different types of gases, making them suitable for a wide range of applications. 3. These pumps run smoothly, with low noise and energy consumption. They are 30% more energy-efficient compared to water jet and water vapor jet pumps. PARAMETER
| Model | Displacement (m³/min) | Ultimate Pressure | Motor Power (kW) | Rotating Speed (rpm) | Water Supply (L/min) | Inlet & Outlet Dimensions (mm) | Weight (kg) | |
| hPa | Torr | |||||||
| SK-0.5B | 0.5 | 47 | 35 | 1.5 | 2900 | 8 | 25 | 45 |
| SK-0.8 | 0.8 | 47 | 35 | 2.2 | 2900 | 10 | 40 | 60 |
| SK-1.5 | 1.5 | 47 | 35 | 4 | 2900 | 15 | 40 | 75 |
| SK-3 | 3 | 80 | 60 | 5.5 | 1450 | 25 | 50 | 153 |
| SK-6 | 6 | 80 | 60 | 11 | 1450 | 35 | 50 | 210 |
| SK-12 | 12 | 80 | 60 | 22 | 980 | 70 | 100 | 600 |
| SK-12B | 12 | 80 | 60 | 18.5 | 980 | 60 | 100 | 450 |
| SK-25 | 25 | 80 | 60 | 45 | 980 | 70 | 100 | 900 |
| SK-30 | 30 | 80 | 60 | 55 | 980 | 75 | 100 | 1200 |
| SK-42 | 42 | 80 | 60 | 75 | 740 | 100 | 100 | 1500 |
| 2SK-2B | 2 | 40 | 30 | 5.5 | 1450 | 20 | 50 | 185 |
| 2YK-2B | 2 | 6.6 | 5 | 5.5 | 1450 | 20 | 50 | 185 |
| 2SK-3 | 3 | 40 | 30 | 7.5 | 1450 | 25 | 50 | 320 |
| 2YK-3 | 3 | 6.6 | 5 | 7.5 | 1450 | 25 | 50 | 320 |
| 2SK-6B | 6 | 33 | 30 | 11 | 1450 | 35 | 50 | 370 |
| 2YK-6B | 6 | 6.6 | 5 | 11 | 1450 | 35 | 50 | 370 |
| 2SK-12 | 12 | 33 | 25 | 22 | 980 | 70 | 80 | 850 |
| 2YK-12 | 12 | 6.6 | 5 | 22 | 980 | 70 | 80 | 850 |
| 2SK-25 | 25 | 33 | 25 | 55,45 | 980 | 60-110 | 100 | 926 |
| 2YK-25 | 25 | 6.6 | 5 | 55,45 | 980 | 60-110 | 100 | 926 |
Regular Selection for Water/Liquid Ring Vacuum Pump
1. Based on the vacuum value:
(1) If the pump is operated for long time with the inlet pressure range between 1.3×10â´~1×10âµ Pa (between 100 and 760 Torr), choose the SK series water ring vacuum pump.
(2) If the pump is operated for long time with the inlet pressure range between 5×10³~1.3×10ⴠPa (between 40 and 100 Torr), choose the 2SK series water ring vacuum pump.
(3) If the pump is operated for long time with the inlet pressure range between 1×10³~1.3×10ⴠPa (between 8 and 100 Torr), choose the 2YK series liquid ring vacuum pump.
2. Working Media
There are four principles to choose working media (i.e., ring liquids):
(1) Lower saturated steam pressure
(2) Lower viscosity
(3) Stable physical & chemical features; no chemical reaction with the pumped gas; no corrosion to the pump; no pollution to the environment.
(4) Economy
If water is selected as the working medium, the best supply water temperature should be lower than or equal to 15°C; the highest should not exceed 40°C. While transformer oil or other low viscosity and saturated vapor pressure industrial oils are used as the working medium, the general supply temperature should not exceed 40°C, and the working media temperature inside the pump chamber should not exceed 60°C. When using a liquid with a lower boiling point as the working medium under special circumstances, a cooling unit must be equipped to cool down the working medium to ensure that the max temperature is 30ºC-50ºC, lower than the boiling point. For the closed circulation system of working media, the liquid storage unit and cooler must be equipped, and the gas-liquid separator must be installed at the outlet. The mechanical seal should be used for dynamic sealing of the shaft.
3. Choose the dynamic seal of the shaft:
Choose the packing seal in general occasions; choose the mechanical seal when the pump is used in a no-leak occasion.
4. Choose the material of the part that the gas passed:
(1) For the non-anti-corrosion pump, the shaft is made of 45# steel or 40Cr, other parts are made of cast iron or brass.
(2) For the anti-corrosion pump, the parts that the gas passed should be made of stainless steel 304 and 306, or other material suitable for the respective corrosive gas, or the parts should be coated with anti-corrosion coating.
5. The motor should be selected based on pumping pressure.
If the pump is used for vacuuming while transferring gas, the pressure of the pump outlet exceeds the standard atmosphere pressure.
When the outlet pressure exceeds 0.15MPa, the special double-stage liquid ring compressor should be chosen and not the vacuum pump refitted. The power of the equipped motor should be increased obviously. And the special gas-liquid separator and auto-drain unit should be equipped too.
When the outlet pressure is below 0.15MPa, it can use the vacuum pump refitted as a compressor. The power of the equipped motor should be increased properly.
6. Composition methods of the water ring vacuum pump system
The open circulation system should be used if the working liquid in the outlet need not be circulated or partially circulated.
The closed circulation system should be used if the working liquid in the outlet must be circulated.
Sea Port: Ningbo/Shanghai, China Standard: CE Mark, Spare Parts Of High Level Delivery: Normally according to our factory production schedule, but we can follow your first order time Warranty: If the pump appears quality problems, free replacements of spare parts will be offered within one year WE CAN PROVIDE YOU 1. On-time Delivery, with More Choice 2. Perfect Technical Support 3. Customized Vacuum Solutions and Service 4. Samples Available 5. Long Quality Guarantee 6. Fast Response to Customers' Feedback in 12 hours DEVELOPMENT VACUUM EQUIPMENT CO., LTD ADD: DONGGANG INDZONE, TAIZHOU, ZHEJIANG, CHINA PC: 317106 TEL: +86-576-83598308 FAX: +86-576-83598309
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