Miniature Electric Plastic Butterfly Valves

Miniature electric plastic wafer butterfly valves combine a compact electric actuator with a thermoplastic wafer butterfly valve for automated isolation and disc-positioning duties in corrosive fluid systems.

The valve body and disc can be manufactured from UPVC, CPVC, PPH, or PVDF to suit different chemical compatibility requirements. Compared with metal butterfly valves, thermoplastic construction helps resist corrosion from many compatible acids, alkalis, salts, and chemical solutions. Material selection should be based on the process medium, concentration, temperature, and operating conditions.

The wafer-type body is installed between mating pipe flanges, providing a lightweight and space-saving solution for plastic piping systems and compact treatment equipment. This design is suitable for installations where corrosion resistance, reduced valve weight, and simplified installation are important.

EPDM and PTFE sealing options are available for different process conditions. The actuator is available in on/off and modulating control types. On/off versions are used for fully open and fully closed operation, while modulating versions allow proportional disc positioning through standard control signals. An optional power-loss return function can also be supplied, using a super capacitor module to return the valve to a preset position after power failure.

Miniature electric plastic wafer butterfly valves are commonly used in chemical dosing systems, water and wastewater treatment equipment, electroplating lines, fume-scrubbing systems, laboratory equipment, and compact corrosive-fluid automation systems.