When choosing Plastic What indicators should I pay attention to when selecting valves?

When purchasing plastic valves, don't just look at their "appearance" or "price." You must also consider the stringent standards of Jiangsu Leiting in demanding industries (such as photovoltaics and semiconductors). Here are the core selection indicators:

Material Compatibility (Media Adaptability)

Core: This is the first step in selection. You must ensure that the valve material (such as PP, PVC, PFA) can withstand your media.

Judgment Criteria: For strong acids, strong alkalis, or highly corrosive media, materials with extremely high chemical corrosion resistance must be selected, such as polytetrafluoroethylene (PTFE) or PFA valves. For general industrial wastewater or oil, polypropylene (PP) or polyvinyl chloride (PVC) is usually sufficient.

Temperature and Pressure Rating (Safety Minimum)

Core: Although plastic valves are lightweight, Limited temperature and pressure resistance.

Judgment criteria: The valve's rated pressure (PN) and rated temperature must be checked. If your system's operating pressure exceeds 0.6 MPa, or the temperature exceeds 80°C, ordinary PVC valves may soften or burst, requiring upgrades to special high-temperature and high-pressure resistant materials.

Connection method and installation dimensions (compatibility)

Core: The valve must be able to connect seamlessly to your piping system.

Judgment criteria: Check the valve's connection ports. If your piping is flanged, the valve must be fitted with a flange of the same specification. For threaded connections, the thread specification must be precisely matched (e.g., 1/2"). NPT).