Discover the robust SK series single-stage liquid ring vacuum pump, engineered for maximum uptime in harsh environments. Featuring a simplified, heavy-duty design, the SK series excels in handling moisture-laden gases and vapors with minimal maintenance. Perfectly suited for chemical, metallurgical, and general industrial vacuum systems requiring consistent, long-term reliability.
Reliable SK Series Single-Stage Liquid Ring Vacuum Pump
Built for the toughest industrial challenges, the SK series is the workhorse of our vacuum lineup. Its single-stage design prioritizes structural integrity and operational simplicity, ensuring your production line remains active and efficient.
Simplified Engineering: Single-stage design for reduced wear and easy on-site maintenance.
Superior Vapor Handling: Effortlessly processes gases with high moisture content or condensable vapors.
Consistent Performance: Large pumping capacity ranges (up to 120 m³/min) for diverse scale operations.
Quiet & Stable: Precision-balanced components ensure smooth running with low vibration.
Engineering Excellence
The SK Series, manufactured by Jinan Golden Bridge Precision Machinery Co., Ltd, is optimized for users who prioritize equipment longevity. By utilizing a liquid ring to compress gases, the SK series eliminates the need for internal lubrication, resulting in a cleaner vacuum and significantly lower friction compared to dry pumps.
Robust Construction: All roughs and components are produced using advanced casting techniques to ensure a thick-walled, durable pump body that withstands continuous 24/7 operation.
Versatile Media Compatibility: Whether you are dealing with moisture in food processing or vapor in chemical distillation, the SK series handles contaminated gas streams that would damage other pump types.
Optimized Thermal Management: The water-cooled compression cycle ensures the pump maintains a stable temperature, preventing overheating and extending the life of seals and bearings.
Customizable Configurations: Available in multiple materials, including high-grade stainless steel and specialized alloys, to meet the corrosive requirements of your specific industry.
Technical Specifications (Standard Industrial Series)
MODEL |
Air Flow (m³/min) |
Ultimate Vacuum |
Motor Power (KW) |
Speed |
Pressure (MPa) |
Caliber |
Water Consumption (L/min) |
||||
Max |
Vacuum (-450mmHg) |
mmHg |
MPa |
Vacuum Pump |
Compressor |
Into |
Out |
||||
SK-0.15 |
0.15 |
0.12 |
-670 |
-0.09 |
0.75 |
/ |
2850 |
/ |
|
|
3-5 |
SK-0.4 |
0.4 |
0.36 |
-680 |
-0.091 |
1.5 |
/ |
2850 |
/ |
G1" |
G1" |
4-8 |
SK-0.8 |
0.8 |
0.75 |
-680 |
-0.091 |
2.2 |
/ |
2850 |
/ |
G1" |
G1" |
5-10 |
SK-1.5B |
1.5 |
1.35 |
-700 |
-0.093 |
4 |
/ |
2900 |
/ |
G1" |
G1” |
8-12 |
SK-1.5 |
1.5 |
1.35 |
-700 |
-0.093 |
3 |
4 |
1440 |
0-0.1 |
70 |
70 |
10-15 |
SK-3 |
3 |
2.8 |
-700 |
-0.093 |
5.5 |
7.5 |
1450 |
0-0.1 |
70 |
70 |
15-20 |
SK-3B |
3 |
2.4 |
-730 |
-0.097 |
5.5 |
/ |
1450 |
/ |
G2” |
G2” |
6-10 |
SK-6 |
6 |
5.4 |
-700 |
-0.093 |
11 |
15 |
1460 |
0-0.1 |
80 |
80 |
20-30 |
SK-9 |
9 |
8.1 |
-700 |
-0.093 |
15 |
22 |
1460 |
0-0.1 |
65 |
65 |
30-40 |
SK-12 |
12 |
10.8 |
-700 |
-0.093 |
18.5 |
30 |
970 |
0-0.1 |
80 |
80 |
40-50 |
SK-15 |
15 |
13.5 |
-700 |
-0.093 |
30 |
45 |
980 |
0-0.1 |
80 |
80 |
50-60 |
SK-20 |
20 |
13.5 |
-700 |
-0.093 |
37 |
55 |
740 |
0-0.1 |
150 |
150 |
60-80 |
SK-20B |
20 |
18 |
-700 |
-0.093 |
30 |
45 |
740 |
0-0.1 |
150 |
150 |
60-80 |
SK-27 |
27 |
24.5 |
-700 |
-0.093 |
45 |
55 |
740 |
0-0.1 |
150 |
150 |
70-90 |
SK-30 |
30 |
27 |
-700 |
-0.093 |
55 |
75 |
740 |
0-0.1 |
150 |
150 |
70-100 |
SK-30B |
30 |
27 |
-700 |
-0.093 |
45 |
75 |
730 |
0-0.1 |
150 |
150 |
70-100 |
SK-42 |
42 |
37.8 |
-700 |
-0.093 |
75 |
90 |
740 |
0-0.1 |
150 |
150 |
95-130 |
SK-42B |
42 |
37.8 |
-700 |
-0.093 |
55 |
75 |
740 |
/ |
150 |
150 |
95-130 |
SK-60 |
60 |
54 |
-700 |
-0.093 |
90 |
132 |
550 |
/ |
250 |
250 |
140-180 |
SK-85 |
85 |
76.5 |
-700 |
-0.093 |
132 |
160 |
550 |
/ |
250 |
250 |
180-220 |
SK-120 |
120 |
108 |
-700 |
-0.093 |
185 |
220 |
490 |
/ |
300 |
300 |
220-260 |
Proven Across Demanding Industries
Designed to thrive where dry vacuum pumps often fail, the SK series is the heavy-duty backbone for continuous production lines. It effortlessly powers through applications involving heavy dust, liquid carryover, and aggressive vapors.

Key Industry Applications:
Heavy Manufacturing & CNC Routing : Provides unbreakable vacuum hold-down for CNC routers (Industrial vacuum cleaners) and automotive parts impregnation, easily tolerating sawdust and debris ingress.
Chemical & Pharmaceutical : Delivers continuous vacuum for distillation and laboratory processes. Its robust liquid ring mechanism safely neutralizes and processes corrosive or wet vapors.
Waterworks & Large Utilities: Serves as a highly reliable priming system for massive water pumps in municipal waterworks, managing high-volume liquid handling with zero stress.
Packaging, Printing & Food Processing: Ensures 24/7 stability for high-speed beverage filling, vacuum packaging, textile rehumidification, and printing drying systems.


As a direct manufacturing source with nearly two decades of expertise, Jinan Golden Bridge Precision Machinery Co., Ltd. ensures stringent quality control over every unit produced.
Strategic Inventory Nodes for Faster Dispatch To shorten lead times for our most highly demanded standard models, we maintain strategic leased inventory nodes in the United States, Mexico, and Turkey.
Note: Local inventory is limited to select hot-selling models. All local dispatch operations, customized orders, and comprehensive technical support are centrally verified and managed directly by our Jinan Headquarters engineering team. Please contact us to check real-time stock availability for your region.
Tip: Please let us know your required pressure (Bar/PSI) and application so we can match the perfect model for your facility.