1. Product introduction
2SK series double stage water ring vacuum pump has high vacuum degree. It is characterized by large pumping speed in high vacuum section, compact structure, reliable use, convenient assembly and disassembly, etc. It is used to pump air or other insoluble gases without solid particles or corrosive gases. In order to form a certain degree of vacuum in the closed container.
2. Product pictures

3. Scope of application
2SK series double stage water ring vacuum pumps are widely used in light textile, food, metallurgy, chemical and other industrial sectors. For vacuum evaporation, vacuum concentration, vacuum moisture regain, vacuum drying, vacuum smelting and other industrial processes.
4. Product Features
(1) During the working process, the work will generate heat, which will heat the working water ring, and some water and gas will be discharged together. Therefore, during the working process, the pump must be continuously supplied with water to cool and supplement the water consumed in the pump.
(2) Mechanical seal can be used for sealing, which is installed in the packing chamber, and the packing is omitted. The packing gland is replaced with a mechanical seal gland, and the other structures are the same as those of the packing seal.
(3) A disc is installed on the end cover. The disc is provided with a suction hole, an exhaust hole and a rubber ball valve.
5. Model Meaning

6. Specifications
Note: 1. The modified data are obtained under the conditions of atmospheric pressure 760mmhg, inlet water temperature 15 ℃, intake air temperature 20 ℃, and air relative humidity 70%. The allowable deviation of performance is ± 10%.
2SK water ring vacuum pump: Maintenance, Safety, Recommendations, and Environmental Performance
The 2SK water ring vacuum pump is a highly efficient and reliable solution for industrial vacuum generation. Utilizing a water ring design, this pump delivers stable vacuum performance with minimal pulsation and noise, making it suitable for chemical processing, pharmaceuticals, food production, and wastewater treatment. Constructed from durable, corrosion-resistant materials, the 2SK pump ensures long service life, energy-efficient operation, and minimal maintenance. This guide provides comprehensive insights into maintenance procedures, safety guidelines, operational recommendations, and environmental performance, helping operators and engineers optimize pump performance.
The 2SK Water Ring Vacuum Pump is engineered to provide continuous, reliable vacuum for various industrial applications. Its key features include:
Water Ring Design: Ensures stable, pulsation-free vacuum generation
Durable Construction: Corrosion-resistant materials for long service life
Energy Efficiency: Optimized for low power consumption and high reliability
Low Noise Operation: Suitable for industrial environments with strict noise requirements
Versatile Applications: Compatible with chemical, food, pharmaceutical, and water treatment industries
Chemical Industry: Solvent recovery, degassing, and vacuum distillation
Pharmaceutical Industry: Drying, sterilization, and vacuum filtration
Food & Beverage: Concentration, dehydration, and packaging processes
Wastewater Treatment: Vacuum dewatering and sludge processing

Proper maintenance of the 2SK pump ensures optimal performance, longevity, and safety.
Daily Inspection:
Check water supply and circulation system for blockages or leaks.
Inspect the pump for unusual noises, vibration, or temperature fluctuations.
Weekly Maintenance:
Inspect bearings, seals, and mechanical components.
Clean the water chamber and inlet/outlet ports.
Monthly Maintenance:
Lubricate bearings and moving parts as recommended by the manufacturer.
Check for corrosion or wear on the impeller and internal surfaces.
Annual Maintenance:
Conduct a full inspection and overhaul if necessary.
Replace worn parts such as seals, gaskets, and impellers.
| Component | Maintenance Task | Frequency |
|---|---|---|
| Bearings | Lubricate and inspect for wear | Monthly |
| Seals & Gaskets | Inspect and replace if damaged | Annually |
| Impeller | Check for corrosion, clean as needed | Monthly |
| Water Circulation | Ensure clean water flow, remove deposits | Weekly |
| Motor & Drive | Inspect alignment, vibration, and noise | Monthly |
Safe operation of the 2SK Water Ring Vacuum Pump reduces risk of injury, equipment damage, and operational hazards.
Read the Manual: Always follow manufacturer instructions before installation and operation.
PPE Usage: Wear gloves, goggles, and protective clothing when handling chemicals or operating the pump.
Electrical Safety: Ensure proper grounding and follow local electrical codes.
Operational Limits: Do not exceed rated vacuum, pressure, or temperature ranges.
Emergency Shutdown: Familiarize operators with the emergency stop procedure.
Chemical Leak: Isolate the pump, contain the spill, and follow appropriate chemical handling protocols.
Overheating: Shut down the pump immediately and inspect cooling water supply and flow.
Mechanical Failure: Stop operation, disconnect power, and inspect for damaged components before restarting.
Following best practices enhances efficiency, reliability, and service life of the 2SK pump.
Mount the pump on a level and rigid base to minimize vibration and noise.
Ensure proper alignment between the motor and pump shaft.
Connect suction and discharge pipes using appropriate fittings; avoid sharp bends.
Check the water supply system for proper flow rate and quality.
Start-Up Procedure:
Open water supply and ensure correct water level in the pump.
Gradually start the motor and monitor vacuum and pressure gauges.
Adjust water flow and vacuum settings as required.
Shut-Down Procedure:
Reduce vacuum gradually and close discharge valves.
Stop the motor and flush the pump with clean water if necessary.
Record operational parameters for future reference.
The 2SK Water Ring Vacuum Pump is designed to minimize environmental impact while maintaining high performance.
Water Ring Operation: Eliminates the need for oil lubrication, reducing contamination risks.
Low Energy Consumption: Optimized design reduces electricity usage.
Corrosion-Resistant Materials: Extends pump life, reducing waste and replacement frequency.
Leak Prevention: Robust seals prevent chemical leaks and environmental contamination.
Reduced chemical and water waste
Lower greenhouse gas emissions due to energy efficiency
Compliance with environmental regulations for safe industrial operations
Understanding and addressing common operational issues ensures smooth performance.
| Problem | Possible Cause | Recommended Solution |
|---|---|---|
| Low vacuum | Insufficient water supply | Check water flow, remove blockages |
| Noise or vibration | Misalignment or debris | Inspect alignment, clean impeller and housing |
| Leakage | Damaged seals or gaskets | Replace worn seals and gaskets |
| Overheating | Low water flow or high ambient temperature | Increase water circulation, ensure proper cooling |
| Motor fails to start | Electrical issues | Inspect power supply, check fuses and wiring |
The 2SK Water Ring Vacuum Pump offers efficient, reliable, and environmentally friendly vacuum generation for a wide range of industrial applications. By adhering to maintenance schedules, safety instructions, and operational recommendations, users can ensure long-lasting performance, energy efficiency, and minimal downtime. Its robust construction, corrosion-resistant materials, and precise engineering make it a trusted solution for industries including chemical processing, pharmaceuticals, food and beverage, and wastewater treatment.


Phone:+86 15868545868/+8618968868555
whatsapp:+86 15868545868/+8618968868555
Email:haiwan@haiwanpump.cn
Add:Meiao Street, Qiaoxia Town, Yongjia County Wenzhou City, Zhejiang, China
Copyright © 2025 Zhejiang Haiwan Pump Industry Co., Ltd.
This website uses cookies to ensure you get the best experience on our website.