How are medium control valves and level gauges made of acrylate materials, which are prone to self-polymerization, generally selected?

This is a rather complex issue; media such as acrylic tend to undergo self-polymerization, so careful selection is indeed necessary. From my personal experience, V-ball valves are more suitable for shut-off valves than O-ring valves, as the V-shaped ball core generates shear force that effectively prevents polymers from accumulating on the surface of the valve core, resulting in better sealing performance ； Although O-type ball valves provide tight sealing, self-polymerizing media can easily get stuck or stick to the ball. Regarding level gauges, in the case of differential pressure types, having a protruding diaphragm indeed helps to reduce the deposition of medium on the diaphragm. However, attention should be paid to the material of the diaphragm and its surface treatment; it is best to choose models with flushing or scraping functions, as otherwise blockages can still occur over time. For data sheets, it is recommended to consult the relevant product manuals or contact the manufacturer directly to obtain information on operating conditions such as viscosity, temperature, and pressure ranges; this will enable a more accurate selection. Additionally, acrylic acid has a high risk of self-polymerization, and problems can occur easily when there are fluctuations in operating temperature or pressure; it is best to install an online cleaning system or heating. The above are merely personal experiences; the specific plan still needs to be determined based on actual operating conditions and the manufacturer’s technical recommendations.

Acrylic media are highly corrosive and prone to self-polymerization; when selecting them, it is essential to take into account material compatibility, measures to prevent polymerization, and suitability for the specific operating conditions.