DESCRIPTION
The 2SK Series Two-Stage Liquid Ring Vacuum Pumps are designed to operate efficiently, similar to two sets of SK series water ring vacuum pumps. Since the SK series vacuum pumps can only achieve a maximum vacuum of -700mmHg, China developed the 2SK series water ring vacuum pump in the 1980s to meet the need for high vacuum and large pumping speed under high vacuum conditions.
ADVANTAGE 1. Compared with SK water vacuum pumps, it offers higher vacuum and pumping speed. 2. Simple structure and easy maintenance. 3. The main working medium is water, resulting in low maintenance costs. 4. Widely used in various areas for suctioning water vapor, flammable, explosive, and gases containing small amounts of dust and liquid. 5. Capable of operating in harsh conditions. 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). Due to their isothermal compression characteristics, they can also handle flammable and explosive gases. When made from anti-corrosion materials, they can be used for corrosive gases as well. 2. The 2YK series liquid ring vacuum pumps offer higher vacuum levels and better applicability. Different types of gases can be pumped by selecting appropriate working media, making them applicable in a wider range. 3. These pumps operate smoothly with low noise and energy consumption. They save up to 30% compared to water jet and water vapor jet pumps. PARAMETER
APPLICATIONS
This pump can be applied in vacuum drying, vacuum degassing, vacuum concentration, vacuum evaporation, and vacuum impregnation processes in industries such as chemical, pharmaceutical, metallurgy, food, medicine, textile, papermaking, and electrical (electronic field). It can be combined with Roots Vacuum Pump and atmospheric jet pump to create a vacuum system that achieves 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 operates for long periods at inlet pressure between 1.3×10â´~1×10âµ Pa (between 100 and 760 Torr), choose the SK series water ring vacuum pump. (2) If the pump operates for long periods at inlet pressure between 5×10³~1.3×10â´ Pa (between 40 and 100 Torr), choose the 2SK series water ring vacuum pump. (3) If the pump operates for long periods at inlet pressure between 1×10³~1.3×10â´ Pa (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 and chemical properties; 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 below or equal to 15°C, and the highest should not exceed 40°C. For transformer oil or other low viscosity and low saturated vapor pressure industrial oils, the general supply temperature should not exceed 40°C, and the working media temperature inside the pump chamber should not exceed 60°C. In special circumstances, if a liquid with a lower boiling point is selected, a cooling unit must be equipped to ensure the maximum temperature is between 30°C and 50°C, below the boiling point. For closed circulation systems, a liquid storage unit and cooler must be installed, along with a gas-liquid separator at the outlet. A mechanical seal should be used for the shaft's dynamic seal. 3. Choose the dynamic seal of the shaft: Use packing seal in general occasions; use mechanical seal when the pump is used in non-leak situations. 4. Choose the material of the part that the gas passed: For non-anti-corrosion pumps, the shaft is made of 45# steel or 40Cr, while other parts are made of cast iron or brass. For anti-corrosion pumps, the parts through which the gas passes should be made of stainless steel 304 or 306, or other materials suitable for the respective corrosive gas, or coated with anti-corrosion coating. 5. Motor selection based on pumping pressure: If the pump is used for vacuuming while transferring gas, the pump outlet pressure exceeds standard atmospheric pressure. When the outlet pressure exceeds 0.15 MPa, a special double-stage liquid ring compressor should be chosen instead of a refitted vacuum pump. The motor power should be increased significantly, and a special gas-liquid separator and auto-drain unit should be equipped. When the outlet pressure is below 0.15 MPa, the vacuum pump can be refitted as a compressor, with proper increase in motor power. 6. Composition methods of the water ring vacuum pump system: An open circulation system should be used if the working liquid in the outlet does not need to be circulated or only partially circulated. A 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: Free replacements of spare parts will be offered within one year if the pump has quality issues. 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, it offers higher vacuum and pumping speed. 2. Simple structure and easy maintenance. 3. The main working medium is water, resulting in low maintenance costs. 4. Widely used in various areas for suctioning water vapor, flammable, explosive, and gases containing small amounts of dust and liquid. 5. Capable of operating in harsh conditions. 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). Due to their isothermal compression characteristics, they can also handle flammable and explosive gases. When made from anti-corrosion materials, they can be used for corrosive gases as well. 2. The 2YK series liquid ring vacuum pumps offer higher vacuum levels and better applicability. Different types of gases can be pumped by selecting appropriate working media, making them applicable in a wider range. 3. These pumps operate smoothly with low noise and energy consumption. They save up to 30% 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-25 | 25 | 80 | 60 | 45 | 980 | 70 | 100 | 900 |
| 2SK-25 | 25 | 33 | 25 | 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 operates for long periods at inlet pressure between 1.3×10â´~1×10âµ Pa (between 100 and 760 Torr), choose the SK series water ring vacuum pump. (2) If the pump operates for long periods at inlet pressure between 5×10³~1.3×10â´ Pa (between 40 and 100 Torr), choose the 2SK series water ring vacuum pump. (3) If the pump operates for long periods at inlet pressure between 1×10³~1.3×10â´ Pa (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 and chemical properties; 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 below or equal to 15°C, and the highest should not exceed 40°C. For transformer oil or other low viscosity and low saturated vapor pressure industrial oils, the general supply temperature should not exceed 40°C, and the working media temperature inside the pump chamber should not exceed 60°C. In special circumstances, if a liquid with a lower boiling point is selected, a cooling unit must be equipped to ensure the maximum temperature is between 30°C and 50°C, below the boiling point. For closed circulation systems, a liquid storage unit and cooler must be installed, along with a gas-liquid separator at the outlet. A mechanical seal should be used for the shaft's dynamic seal. 3. Choose the dynamic seal of the shaft: Use packing seal in general occasions; use mechanical seal when the pump is used in non-leak situations. 4. Choose the material of the part that the gas passed: For non-anti-corrosion pumps, the shaft is made of 45# steel or 40Cr, while other parts are made of cast iron or brass. For anti-corrosion pumps, the parts through which the gas passes should be made of stainless steel 304 or 306, or other materials suitable for the respective corrosive gas, or coated with anti-corrosion coating. 5. Motor selection based on pumping pressure: If the pump is used for vacuuming while transferring gas, the pump outlet pressure exceeds standard atmospheric pressure. When the outlet pressure exceeds 0.15 MPa, a special double-stage liquid ring compressor should be chosen instead of a refitted vacuum pump. The motor power should be increased significantly, and a special gas-liquid separator and auto-drain unit should be equipped. When the outlet pressure is below 0.15 MPa, the vacuum pump can be refitted as a compressor, with proper increase in motor power. 6. Composition methods of the water ring vacuum pump system: An open circulation system should be used if the working liquid in the outlet does not need to be circulated or only partially circulated. A 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: Free replacements of spare parts will be offered within one year if the pump has quality issues. 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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