The O type shut -of ball valve is kind of quater-turn on -off vale .It is mainly used for shut-off contorl of media The ball valve of this series adopts round hole in the ball When opended It is diectly connected to the body flow channel. featured by high flow capacity.Compared With pluger valves.it has small structural sizes.light weight and the funcion of self-cleaning between plug and seat.Therefore,it is very suitable for viscous.fibrous media and those containing suspended solid particles .With low heat expansion impact due to temperature. and good sealing performance.It is widely applied in the systems of such industries as petrochemical industry.metallurgy.chemical fiber.pulp&paper.medicine.hydroelectric station etc.to meet the needs of remote control of process parameters such as flow pressure.tempertaure and liquid level of all gases.liquids or corrosive gases and liquid media.
body main technical parmaneters
Trim main technical parmaneters
Outline dimensions: See table 12 for details.
body main technical parmaneters
| body type | two-piece,three-piece |
| Nominal diameter | DN15~500(NPS1/2~24) |
| Nominal pressure | PN 1.6~4.0Mpa(Clsaa150~600) |
| Type of connection | flanged |
| Material | A216-WCB, A351-CF8, A351-CF8M, A351-CF3, A351-CF3M, A217-WC6, A217-WC9 |
| Bonnet: standard type | -20~250ºC |
| high temperature type | 250~525ºC |
| Packing | PTFE, flexible graphite, nickel-based wire reinforced flexible graphite |
Trim main technical parmaneters
Outline dimensions: See table 12 for details.
| Plug type | O straight-through type |
| Plug material | A182-F304, A182-F316 |
| Seat material/soft seal: | PTFE, RPTFE, PPL |
| hard seal | :A182-F304, A182-F316 |
| Flow characteristic | quick opening |
| Rated Cv value: | See table 4 for details. |
| Rated travel | 0~90ºC |
| Seat Leakage class/soft seal | ANSI B16.104 class VI |
| Hard seal | ANSI B16.104 class V(hard seal class VI for special orders) |
| treatment for body | plug.ball.seat.stem etc |
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