Sk Series Dual Stage Vacuum Pump (CE, ISO9001) (SK-6B)

DESCRIPTION
The 2SK Series Two-Stage Liquid Ring Vacuum Pumps are designed to perform efficiently like two sets of SK series water ring vacuum pumps. Due to the limitations of SK series vacuum pumps in achieving high vacuum levels (up to -700 mmHg), China developed the 2SK series water ring vacuum pump in the 1980s to meet the demand for higher vacuum and larger pumping speed under high vacuum conditions.


ADVANTAGE
1. Compared with SK water vacuum pumps, it achieves higher vacuum and improved pumping speed.
2. Simple structure and easy maintenance.
3. Water is typically used as the working medium, resulting in low maintenance costs.
4. The pump is widely used across various industries, capable of handling water vapor, flammable, explosive, and gases containing small amounts of dust and liquid.
5. It operates effectively in harsh conditions.

FEATURES
1. The SK and 2SK series water ring vacuum pumps can be used for exhausting both ordinary and condensable gases (such as water vapor). They offer isothermal compression, making them suitable for flammable and explosive gases. When made from corrosion-resistant materials, they can also handle corrosive gases.

2. The 2YK series liquid ring vacuum pumps provide higher vacuum levels and broader applicability. By selecting appropriate working media, they can handle different types of gases, expanding their range of use.

3. These pumps operate smoothly with low noise and energy consumption. They save about 30% energy compared to water jet and steam jet pumps.

PARAMETER

APPLICATIONS
This pump is suitable for vacuum drying, vacuum degassing, vacuum concentration, vacuum evaporation, and vacuum impregnation processes in chemical, pharmaceutical, metallurgy, food, medicine, textile, papermaking, and electrical industries (including electronic fields). It 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 a long time with the inlet pressure range between 1.3×10⁴~1×10⁵ Pa (between 100 and 760 Torr), please choose the SK series water ring vacuum pump.
(2) If the pump is operated for a long time with the inlet pressure range between 5×10³~1.3×10⁴ Pa (between 40 and 100 Torr), please choose the 2SK series water ring vacuum pump.
(3) If the pump is operated for a long time with the inlet pressure range between 1×10³~1.3×10⁴ Pa (between 8 and 100 Torr), please 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 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 temperature of supply water should be lower than or equal to 15°C; the highest one should not be higher than 40°C. While transformer oil or other low viscosity and saturated vapor pressure industrial oils are used as the working media, the general supply temperature should not exceed 40°C, and the working media temperature inside the pump chamber should not exceed 60°C. When a liquid with a lower boiling point is selected as the working medium under some special circumstances, a cooling unit must be equipped to cool down the working media to ensure that the max temperature is 30°C–50°C, 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 seal 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 0.15 MPa, 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 0.15 MPa, it can use the vacuum pump refitted as 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

Pressure Vessel

A pressure vessel is a vessel that can withstand high pressures and is commonly used for storing, transporting, and processing various gases, liquids, and gaseous liquid mixtures. The pressure vessel is mainly composed of vessel body, flange, seal, support and accessories. Common pressure vessels are gas cylinder, gas storage tank, distillation tower, reactor and so on.

The design and manufacture of pressure vessels must comply with relevant national standards and specifications, and pass strict inspection and testing to ensure their safety and reliability. During use, you must comply with the operation regulations and safety precautions, and periodically check and maintain the device to ensure its normal operation and safe use.

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