can rotate 90° to connect or cut the medium. Body cavity with grooves and convex edges structure design can fix sleeve effectively, which can meet special application need. The design can protect valves avoid from the sleeve and plug rotation at the same time which may cause the valve to break when close. Sleeve material uses Dupont PTFE, it has good strength, small friction factor, small torque, reliable seals, long service life, etc. advantage.

The Innovations and Features of Control Plug Valves

Adjust sealing function by the double-gland structure

First layer: Sealing sleeve; sealing sleeve employs import modified PTFE as material, which has temperature resistance up to 260

Third layer：Wedge type packing or flexible graphite packing seal.

Packing box at the bonnet

The belleville spring is used to load the connecting bolt between the packing and plug adjust gland to prevent an abnormal change of pressure and temperature in the pipeline. The belleville spring can automatically compensate for and protective sealing.

Related Rotary Motion Control Valves

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