What is a common cause of leakage inside the back of a liquid control meter?

A common cause of leakage inside the back of a liquid control meter is the failure of the O-ring. O-rings are designed to create a tight seal between two surfaces, preventing fluid escape. Over time, O-rings can wear out due to factors such as age, exposure to harsh chemicals, temperature fluctuations, or mechanical stress. When an O-ring is compromised or improperly installed, it can lead to leakage, which not only affects the operation of the meter but can also result in fluid loss and contamination.

While other sealing options like Viton seals, Teflon seals, and square rings may also be used in some applications, they are less common in this context. Each of these alternatives has specific use cases and can be valuable in different settings but does not hold the same widespread application as O-rings in liquid control meters. Proper maintenance and routine inspection of O-rings can help mitigate the risk of leakage and ensure the proper functioning of the liquid control meter.