Water Ring Vacuum Freeze Drying Pump


2SK sequence two-phase liquid ring vacuum pumps can function properly like two sets of SK collection h2o ring vacuum pump. Owing to SK collection vacuum pumps only achieve the highest vacuum of-700mmHg, to meet up with the large vacuum and the massive pumping speed beneath substantial vacuum, China designed the 2SK series drinking water ring vacuum pump in 80s in the 20th century. 


one. When compared with SK h2o vacuum pump ,It receives substantial vacuum and pumping speed etc..

two. Basic construction and straightforward upkeep.

three. The mostly doing work medium is h2o and lower maintenance fees.

4.The pump is commonly use in many areas and suction water vapor,flammable, explosive and numerous gases incorporate a little quantity of dust and liquid.

five. The pump can works in the severe condition


one. Series SK,2SK H2o Ring Vacuum Pumps can be used to exhaust common gases as properly as condensable gases(these kinds of as h2o vapor). Because they have the characteristics of isothermal compression, they can exhaust flammable and explosive gases. When the pump produced up of anti-corrosion materials is picked, it can be employed for exhausting corrosive gases also.


two. Series 2YK Liquid Ring Vacuum Pumps have the functions of larger vacuum and greater applicability. The various varieties of gases can be pumped with the selected ideal doing work media. Consequently, they can be applied in wider variety.


three. The pumps operate effortlessly with low sounds and use. The strength-preserving is thirty p.c comparing with the Drinking water Jet and the H2o Vapor Jet Pumps.

Work Principle



Model Displacement
Ultimate Pressure
hPa     Torr
Motor Electrical power
CZPT Speed
Water CZPT
Proportions (mm)
SK-.5B .5 47     35 one.five 2900 eight 25 forty five
SK-.8 .eight 47     35 2.2 2900 10 40 sixty
SK-1.five 1.5 47     35 4 2900 15 40 seventy five
SK-three 3 80     60  five.5 1450 twenty five fifty 153
SK-6 six eighty     60  11 1450 35 fifty 210
SK-12 12 80     60  22 980 70 one hundred 600
SK-12B twelve 80     60  eighteen.5 980 60 one hundred 450
SK-twenty five 25 80     60  forty five 980 70 a hundred 900
SK-30 thirty eighty     60  55 980 75 a hundred 1200
SK-42 42 80     60 75 740 one hundred a hundred 1500
2SK-2B two forty     30 5.five 1450 20 fifty 185
2YK-2B 2 six.6    5 five.5 1450 twenty 50 185
2SK-three three forty     thirty seven.five 1450 25 fifty 320
2YK-three three six.six    5 seven.5 1450 25 fifty 320
2SK-6B 6 33     30 11 1450 35 fifty 370
2YK-6B six 6.6    5 eleven 1450 35 fifty 370
2SK-12 12 33     25 22 980 70 eighty 850
2YK-12 twelve six.six    5 22 980 70 80 850
2SK-twenty five 25 33     twenty five fifty five,45 980 sixty-110 one hundred 926

It can be applied to the vacuum drying, vacuum degassing, vacuum concentration, vacuum evaporation, vacuum impregnation process in chemical, pharmaceutical, metallurgy, food, medicine, textile, papermaking, electrical industry ( electronic industrial field) and so on. It can compose a vacuum system together with Roots Vacuum Pump and atmospheric Jet pump to achieve high vacuum, high efficiency, low power consumption.

Regular Selection for Water(Liquid)Ring Vacuum Pump
one,Based on the vacuum value
(one)If the pump is operated for long time with the inlet pressure range between1.3×104~1×105Pa (between 100 and 760 Torr), please choose series SK Water Ring Vacuum Pump.
(2)If the pump is operated for long time with the inlet pressure range between5×103~1.3×104Pa(between40 and 100 Torr), please choose series 2SK Water Ring Vacuum Pump.
(three)If the pump is operated for long time with the inlet pressure range between1×103~one.3×104Pa(between8 and 100 Torr), please choose series 2YK Liquid Ring Vacuum Pump.

two,Working Media 
There are four principles to choose working media(i.e.ring liquids)
(one) Lower saturated steam pressure
(two) Lower viscosity
(3) Stable physical & chemical features no chemical reaction with the pumped gasno corrosion to the pump no pollution to the environment.
(4) Economy

      If the water is selected as the functioning medium, the ideal temperature of offer water ought to be decrease than or equal to 15 °C the optimum 1 should not be greater than 40°C. Although the transformer oil or other minimal viscosity and saturated vapor force industrial oils are as the functioning media, the common offer temperature ought to not higher than 40°C and the working media temperature within the pump chamber must not be increased than 60C, when the liquid with decrease boiling point is chosen as the functioning media below some particular conditions, the cooling unit need to be geared up to amazing down the working media in order to make certain that the max temperature is 30ºC-50ºC, decrease than the boiling point. For the shut circulated system of functioning media, the liquid storage unit and cooler need to be outfitted, and the fuel-liquid separator should be put in at outlet. The mechanical seal should be utilized for dynamic seal of the shaft.

three,Choose the dynamic seal of the shaft:
Choose the packing seal in general occasion choose the mechanical seal when the pump is used in no leak occasion.

four,Choose the material of the part that the gas passed:

(one) For the non anti-corrosion pump, the shaft is made of forty five#metal or 40Cr, other components are created of cast Iron or brass

(two) For the anti-corrosion pump,the areas that the gasoline handed, should be manufactured of stainless steel 304 and 306, or other content ideal for the respectively corrosive fuel, or the parts need to be place with anti-corrosion coating.

five, The motor should be selected based on pumping pressure.

If the pump is utilized for vacuuming although transferring gasoline, the force of pump outlet exceeds the CZPT atmosphere pressure.

When the outlet stress exceeds .15MPa, the special double-levels liquid ring compressor should be selected and not the vacuum pump refitted. Tthe electricity of the outfitted motor must be enhanced certainly. And the particular gasoline-liquid separator and auto-drain unit need to be geared up also.

When the outlet strain is beneath .15MPa, it can use the vacuum pump refitted as compressor. The energy of the outfitted motor should be enhanced correctly.

6,Composition methods of the water ring vacuum pump system
The opening 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.


1. On-time Supply, with More Choice 
two. Best CZPT Support
3. Custom-made Vacuum Answers and Service 
four. Samples Accessible
5.  Long CZPT Guarantee 
six. Quickly Reaction to Customers' Suggestions in 12 hours 
DVE Service
Sea Port: HangZhou/ZheJiang , China
Common: CE Mark, Spare Areas Of Higher Stage
Delivery: Usually according to our factory creation timetable, but we can comply with your initial buy time 
Warranty: If pump look quality issues, totally free replacements of spare components will be presented in one particular year
Advancement VACUUM Tools CO., LTD 
Add:HangZhou INDZONE, HangZhou, ZHangZhouG, CHINA Pc: 317106
TEL:-576-83598308 FAX:-576-83598309 

Water Ring Vacuum Freeze Drying Pump