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2SK Series Advanced Two-Stage Water Ring Vacuum Pump | High-Efficiency Deep Vacuum Solutions

Upgrade your process with the 2SK series two-stage liquid ring vacuum pump, engineered for superior performance in high-vacuum regions. By utilizing a dual-impeller design, the 2SK series achieves deeper vacuum levels and more stable pumping speeds than single-stage models. Available as a stand-alone unit or as part of the 2SK-P1 series with an atmospheric jet pump for ultimate vacuum requirements in pharmaceutical and chemical processing.

Overview
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Description

Precision-Engineered 2SK Series Two-Stage Vacuum System

The 2SK series is specifically designed for industrial applications where a standard single-stage pump cannot meet the required vacuum depth. Its dual-stage compression cycle ensures maximum efficiency in the high-vacuum range, reducing energy consumption while maintaining a stable process environment.

Deep Vacuum Capability: Features a two-stage impeller design to reach vacuum levels far beyond standard SK models.
2SK-P1 High-Vacuum Unit: Integrated with an atmospheric jet pump to achieve an ultimate vacuum of -0.099 MPa (-750 mmHg).
Engineered for Volatiles: Ideal for handling gases with high moisture or condensable vapors without performance loss.
Low Maintenance Cost: Durable construction and simplified mechanical seals reduce long-term operational expenses.

2SK Series: High-Performance Two-Stage Vacuum Engineering

The 2SK Series, manufactured by Jinan Golden Bridge Precision Machinery Co., Ltd, is the heavy-duty evolution of the liquid ring vacuum pump. Unlike single-stage pumps, the 2SK series utilizes a dual-impeller system arranged in series. This architecture allows the second stage to further compress the discharge from the first stage, effectively achieving a much deeper ultimate vacuum and maintaining high pumping speeds even as the system approaches its limit.

Advantages

Why Choose the 2SK Stand-alone Pump?

Optimized Compression Ratio: The two-stage design significantly reduces backflow within the pump, ensuring a stable vacuum environment for precision processes.
Isothermal Safety: As a liquid ring pump, the compression is essentially isothermal (constant temperature), making it the safest choice for handling heat-sensitive or volatile vapors.
Durability for 24/7 Operations: Constructed with reinforced casting and high-grade mechanical seals, the 2SK is built for continuous industrial duty in harsh environments.

2SK-P1 Series: The Ultimate Deep Vacuum Unit

For specialized applications requiring an even deeper vacuum than a standard liquid ring pump can provide, we offer the 2SK-P1 High-Vacuum Unit. This system integrates the 2SK two-stage pump with an Atmospheric Jet Pump to push the boundaries of liquid ring technology.

The 2SK-P1 Advantage:

Extreme Vacuum Depth: Achieves an ultimate vacuum of -0.099 MPa (-750 mmHg), bridging the gap between standard liquid ring pumps and more complex vacuum technologies.
Cavitation Suppression: The jet pump provides a "buffer" that prevents the main 2SK pump from running in the cavitation zone during deep vacuum operation, extending the life of the impellers.
Plug-and-Play Integration: The 2SK-P1 is a pre-configured unit, ready to be integrated into your existing pharmaceutical or chemical processing line.

Specification Table

Technical Specifications (Standard Industrial Series)

MODEL	Air Flow (m³/min)		Ultimate vacuum Mpa (mmHg)	Motor Power (KW)	Speed (r/min)	Water Consumption (L/min)	Inlet Port (mm)	Outlet Port (mm)
MODEL	Max	Vacuum -700mmHg	Ultimate vacuum Mpa (mmHg)	Motor Power (KW)	Speed (r/min)	Water Consumption (L/min)	Inlet Port (mm)	Outlet Port (mm)
2SK-0.4	0.4	0.25	-0.096 (-720)	2.2	2860	3-5	G1"	G1"
2SK-0.8	0.8	0.5	-0.096 (-720)	3	2860	5-8	G1"	G1"
2SK-1.5	1.5	0.9	-0.097 (-730)	4	1440	10-15	40	40
2SK-3	3	2	-0.098 (-735)	7.5	1450	15-20	40	40
2SK-6	6	4		15	1460	25-35	70	70
2SK-12	12	8		22	970	40-50	100	100
2SK-20	20	14		45	740	60-80	125	125
2SK-30	30	20		55	740	70-90	125	125

Two-stage water ring vacuum pump with one-stage atmospheric pump

MODEL	Air Flow (m³/min)		Ultimate vacuum MPa (mmHg)	Motor Power (KW)	Speed (r/min)	Water Consumption (L/min)
MODEL	Suction Pressure 30 Torr (-730mmHg)	Suction Pressure 20 Torr (-740mmHg)	Ultimate vacuum MPa (mmHg)	Motor Power (KW)	Speed (r/min)	Water Consumption (L/min)
2SK-0.4P₁	0.28	0.24	-0.099 (-750)	2.2	2860	3-5
2SK-0.8P₁	0.56	0.48		3	2880	5-8
2SK-1.5P₁	1.05	0.9		4	1440	10-15
2SK-3P₁	2.1	1.8		7.5	1440	15-20
2SK-6P₁	4.2	3.6		15	1460	25-35
2SK-12P₁	8.4	7.2		22	970	40-50
2SK-20P₁	14	12		45	740	60-80
2SK-30P₁	21	18		55	740	70-90

Comprehensive Application Areas

The 2SK and 2SK-P1 series are essential for high-precision operations across various industries:

Pharmaceutical & Chemical: Vacuum distillation, evaporation, and concentration of heat-sensitive materials.

Food Processing: Large-scale vacuum drying and deaeration for shelf-life extension.

Advanced Manufacturing: Vacuum smelting, impregnation, and precision electronics manufacturing.

Textile & Wood Industry: High-efficiency drying systems for premium wood products and textile conditioners.

water-ring-pump-applicable-industries

our factory

Global Fulfillment & Headquarters Support

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.

Request a Custom Quote

Tip: Please let us know your required pressure (Bar/PSI) and application so we can match the perfect model for your facility.