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Blog
Specializing in the production of special pressure gauges, thermometers, and pressure measuring accessories, etc
Components of a stainless steel pressure gauge
Release time:
2025-11-13
Let’s start by discussing the part of the stainless steel pressure gauge that is visible from its exterior, and then move on to its internal structure—including the functions of its components and other devices that can cause these common failures. That way, when problems arise, we can quickly identify their root causes and minimize the damage caused by frequent malfunctions.
Let’s start by discussing the external components of the stainless steel pressure gauge—those parts that are visible from the outside—and then move on to its internal structure, including the functions of various components and other devices that can cause common malfunctions. This way, when a problem arises, we can quickly identify its root cause and minimize the damage caused by frequent failures. Specifically, the external structure includes the case band, glass cover, pointer, and wetted parts. If a leak occurs, we can first check whether the case band is damaged or if there’s any leakage in the wetted materials. Next, we should inspect the sealing rings—typically, leaks originate from these areas. As for insufficient accuracy of the reading, we can check whether the pointer itself has bends or deformations, which are common faults. Additionally, we need to examine the weld joints of the wetted materials, as this area is also prone to leaks.
The internal structure is primarily composed of a core and elastic elements. If the pointer fails to return to the zero position or if the measured values are inaccurate, in most cases, this is caused by the elastic elements. Prolonged exposure to overpressure during measurement can lead to deformation of these elastic elements, causing the pointer to fail to return to zero and resulting in an inaccurate measurement range. On the other hand, if, during operation, the pressure is varied but the pointer remains unresponsive or stays fixed at the zero position, this could be due to damage to the core itself.
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