*Characteristics:

- Pressure: ≦ 3 MPa

- Temperature: ≦ 150 ℃

- Medium: Oxygen,natural gas

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*Applications:

Widely applied in the exploitation of petroleum, natural gas, coal, metallurgy and ores.

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*Description:

1. Simple structure, convenient manufacturing process and maintenance.

2. Small working schedule and short opening and closing time.

3. Good sealing performance, slight friction force between adjacent sealing covers and long period of service life.