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E-mail
cxltvalve@163.com
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15002126659
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Building 2, No. 268 Qinggong Road, Fengxian District, Shanghai
Chuanxi Fluid Equipment (Shanghai) Co., Ltd
Durability verification of micro proportional valves in high temperature/high pressure/corrosive media
Date: 2025-12-08Read: 28
In the field of industrial fluid control, micro proportional valves are often placed in harsh working conditions such as high temperature roasting, high pressure impact, and corrosive media erosion. Their durability directly determines the reliability of the system's long-term operation. In response to such challenges, manufacturers use multidimensional verification systems to ensure that micro proportional valves can maintain precise control and stable lifespan under abnormal conditions.
High temperature verification focuses on thermal stability and material creep resistance. The experiment usually simulates the working condition of 150-300 ℃ in a constant temperature chamber and runs continuously for thousands of hours to monitor whether the sealing surface of the valve core and valve seat has increased gap or flow drift due to thermal expansion. goodMicro proportional valveBy using high-temperature resistant alloys (such as Hastelloy) or ceramic coatings, the leakage rate at high temperatures can be controlled within ± 5% of the initial value, avoiding a decrease in control accuracy due to thermal aging.
High voltage verification focuses on maintaining the strength and dynamic response of the structure. In the test chamber with a pressure range of 10-100MPa, the pressure limit of the valve body, seals, and drive unit is checked by stepwise pressure rise and cyclic impact (such as multiple pressure pulsations per minute). Experimental data shows that after 10 cycles of high pressure, the flow control deviation of qualified products can still be less than 1%, proving that their mechanical structure has not undergone plastic deformation or fatigue cracking.
The verification of corrosive media simulates acidic, alkaline, salt spray or organic solvent environments, using dual testing of immersion and dynamic flow. For example, running continuously in a solution with pH 1-13 or in an oil and gas medium containing H ₂ S and Cl ⁻, observe whether there is pitting corrosion, intergranular corrosion, or seal failure in the valve internals. By selecting PTFE coated valve cores, fluororubber seals, or integral ceramic valve bodies, the corrosion rate can be reduced to<0.01mm per year, ensuring long-term service in chemical, marine equipment, and other scenarios.
Durability verification not only relies on material selection, but also needs to be combined with accelerated life testing (ALT) and failure mode analysis (FMEA) to identify weak links in advance and optimize the design. Currently, through third-party authenticationMicro proportional valveIt has been able to operate stably for 3-5 years under composite conditions of high temperature, high pressure, and corrosion, providing reliable guarantee for precision fluid control in industries such as energy, chemical, and semiconductor.