Pneumatic penetrating plug valve

Pneumatic penetrating plug valve is a type of valve designed specifically for powder, particle, and slurry media. Its core feature is the full bore without groove structure, which can effectively avoid medium blockage. The following is a comprehensive technical analysis:
1、 Working principle and structure
Gate design
The gate has a circular opening with a diameter, which is driven up and down by a pneumatic actuator to achieve complete detachment or alignment between the circular opening and the pipeline, thereby controlling the flow of the medium.
Sealing form
Soft seal: Made of nitrile rubber or fluororubber, suitable for corrosive media such as acid and alkali solutions.
Hard seal: Welding stainless steel or hard alloy, resistant to high temperatures up to 650 ℃, suitable for abrasive media such as slurry and cement.
2、 Technical parameters
Nominal diameter: DN50-DN1000, some models support larger diameters.
Pressure rating: PN6~PN25, some hard seal models can reach higher pressure.
Applicable temperature: -20 ℃~+150 ℃ (soft seal), hard seal model can be extended to 650 ℃.
Drive mode: standard pneumatic (can be equipped with solenoid valve, limit switch), supports electric or manual operation.
3、 Application scenarios
Mining/power plants: For the transportation of mineral sand and coal slurry, shear function is required to remove adhered materials.
Chemical/Food: Corrosive liquids or high-purity media require FDA certified rubber lining.
Environmental engineering: sewage treatment, dust control, requiring anti clogging design.

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