Common Problems and Maintenance Methods of Ball Check Valve

2026-08-04

The ball and check valve, commonly named ball check valve, is a professional integrated anti-backflow valve that adopts a unique check valve with ball internal structure. Different from ordinary independent ball valves and swing check valves, this integrated design perfectly solves backflow problems in complex working conditions such as municipal sewage, industrial circulating water and slurry conveying. It relies on floating ball self-weight and medium pressure to achieve automatic opening and closing, featuring outstanding anti-clogging ability and stable sealing performance. Although the structural design of the check valve with ball is simple, irregular installation, long-term overload operation and neglected daily maintenance will easily cause common faults including valve jamming, internal leakage and unresponsive closing. This article comprehensively analyzes the typical failures of ball and check valve and provides standardized maintenance solutions to help users extend the service life of ball valve and check valve supporting equipment and ensure stable pipeline operation.

Valve Jamming Failure & Solutions Valve

Jamming and inflexible switching are the most common faults of the check valve ball valve. This type of valve is mostly used for media containing sediment, fibers and solid particles. Long-term operation will lead to the accumulation of sludge and impurities in the valve cavity, which locks the internal floating ball and causes failure of reset and backflow protection. In addition, residual welding slag and construction impurities during pipeline installation are also key causes of jamming. To avoid this fault, regular pipeline flushing and cavity cleaning are essential. Timely removal of internal dirt can ensure the flexible movement of the floating ball and maintain the normal working state of the ball and check valve.

Internal Leakage & Sealing Failure & Solutions

Sealing failure and internal leakage frequently occur in conventional ball valve and check valve combination and integrated check valve with ball. Most leakage issues are not caused by product quality problems, but by foreign matter stuck between the floating ball and valve seat, sealing surface wear, or aging and deformation of rubber sealing rings. Long-term frequent opening and closing will reduce the elasticity of the sealing parts, resulting in incomplete closure and medium leakage. For slight leakage, users need to disassemble the valve body, clean the sealing surface and calibrate the floating ball position. For severely worn and aging accessories, replacing the sealing assembly in time can restore the zero-leakage performance of the check valve ball valve.

Slow Closing & Floating Ball Abnormality & Solutions

Unstable pipeline pressure and continuous vibration will cause fatigue damage to the internal limit structure of the ball and check valve, resulting in slow closing response and floating ball deviation. Improper installation such as long-term horizontal placement will also make the floating ball deviate from the operating track and lose reset function. This fault greatly reduces the backflow prevention effect of the check valve with ball. It is standardized to install the valve vertically, avoid long-term variable pressure overload operation, and conduct regular switching tests to ensure the floating ball moves flexibly and stably.

Standard Daily Maintenance Specifications

Scientific maintenance is the core to reduce the failure rate of ball valve and check valve and integrated check valve ball valve.

First, conduct regular visual inspection to check valve body corrosion and pipeline vibration.

Second, perform periodic opening and closing tests to verify the flexible operation of the internal floating ball.

Third, clean internal sediment seasonally and replace aging sealing accessories regularly.

For harsh working conditions such as sewage and slurry pipelines, appropriately increase maintenance frequency to prevent impurity accumulation and ensure the long-term sta