Problems with smoke and oil spray in water-ring vacuum pumps

2026-08-04 

Water-ring vacuum pumps are widely used across many sectors. With advantages such as a long service life and low investment costs, they are subject to relatively high performance requirements, which in turn places greater demands on operational skills. Let us now take a look at the issues associated with smoke and oil spray in water-ring vacuum pumps.

During operation, water-ring vacuum pumps may experience faults of varying severity due to a range of factors; this is inevitable. We can only take appropriate preventive measures to minimise the occurrence of certain problems. A common issue encountered recently is smoke emission and oil spitting. Whilst smoke emission is normal when the water-ring vacuum pump first starts operating, prolonged smoke emission is abnormal. Smoke emission indicates a leak outside the pump’s inlet, including in pipework, valves and vessels. Once the leak has been detected and rectified, the smoke emission will cease.

Oil spitting indicates that there are multiple leaks outside the water-ring vacuum pump’s inlet, or even that the inlet is exposed to the atmosphere. Seal the pump’s inlet before running the pump. If oil spitting ceases, this indicates that there are leaks or that the exhaust valve disc is damaged; check the exhaust valve disc for damage and replace any damaged valves. If the issue is not resolved thoroughly, the water-ring vacuum pump may continue to experience problems such as smoke and oil spitting from time to time; therefore, a comprehensive approach must be taken when resolving the issue to prevent similar problems from recurring. At the same time, operators should strengthen their mental resilience; when encountering problems, they must first remain calm, as a composed mindset is essential for resolving issues effectively.

The above covers issues relating to smoke and oil spray in water-ring vacuum pumps. Please take note of this information and strictly adhere to the operating requirements during operation to avoid unnecessary complications. Should you have any queries, please do not hesitate to contact us by telephone. We hope the information provided here proves helpful.

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