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PLVG plug valve is a rotary valve with a closure or plunger shape. It is a type of valve that opens or closes by rotating 90 degrees to make the channel port on the valve plug the same or separate from the channel port on the valve body. The shape of the valve plug of a rotary valve can be cylindrical or conical. In a cylindrical valve plug, the channel is generally rectangular; In a conical valve, the channel is trapezoidal. These shapes make the structure of the plug valve lightweight, but at the same time, they also result in certain losses. Plug valves are most suitable for cutting off and connecting media, as well as for diverting flow, but depending on their properties and the erosion resistance of the sealing surface, they can sometimes also be used for throttling.
A. The product has reasonable structure,reliable sealing,excelient performance and beautiful appearance
Main Parts Material |
No. | Parts | Material |
1 | Body | ASTM A216 WCB ASTM A217-WC1,WC6,WC9,C5 ASTM A351-CF8,CF8M,CF3,CF3M |
2 | Ferrule Sealing | PTFE |
3 | Plug | ASTM A182-Gr.F6a ASTM A182-F22 ASTM A182-F304,F316,F321,F304L,F316 |
4 | Gasket | Flexible Graphite + S.S. |
5 | Adjusting Gasket | ASTM A182-Gr.F6a ASTM A182-F22 ASTM A182-F304,F316,F321,F304L,F316 |
6 | Bonnet | ASTM A216 WCB ASTM A217-WC1,WC6,WC9,C5 ASTM A351-CF8,CF8M,CF3,CF3M |
7 | Adjusting Bolt | ASTM A193-B7,A320-B8,A193-B8M |
8 | Hex Nut | ASTM A194-2H,A194-8,A194-8M |
9 | Bolt | ASTM A193-B7,A320-B8,A913-B8M |
10 | Lever | ASTM A105-WCB |
| DN(mm) | DN(mm) | ||||
| L | D | D1 | D2 | z-φd | |
| 15 | 80 | 80 | 55 | 40 | 4*12 |
| 20 | 90 | 90 | 65 | 50 | 4*12 |
| 25 | 100 | 100 | 75 | 60 | 4*12 |
| 32 | 115 | 120 | 90 | 70 | 4*14 |
| 40 | 130 | 130 | 100 | 80 | 4*14 |
| 50 | 145 | 140 | 110 | 90 | 4*14 |
| 65 | 160 | 160 | 130 | 110 | 4*14 |
| 80 | 200 | 185 | 150 | 125 | 4*18 |
| 100 | 230 | 205 | 170 | 145 | 4*18 |
| 125 | 250 | 235 | 200 | 175 | 8*18 |
| 150 | 320 | 260 | 225 | 200 | 8*18 |
| 200 | 350 | 315 | 280 | 255 | 8*18 |
Q:When should a plug valve be used?
The application scenarios of plug valves are well-defined, primarily occurring in situations where rapid on/off control of fluid pipelines is required or periodic flushing of pipeline impurities is necessary.
Q:What specific areas are involved?
For instance, pipelines in the petroleum and chemical industries that transport corrosive oils/gases or chemical slurries, as well as sewage conveyance lines handling wastewater containing sediment impurities, all require flushable plug valves with excellent sealing performance and erosion resistance for effective control.
The core advantages are reflected in three key dimensions: Firstly, excellent sealing performance. The eccentric structure design enables the valve plug to automatically detach or fit the sealing surface during the opening and closing process, reducing wear on the sealing surface. Even after long-term use, it can maintain a zero-leakage sealing effect, eliminating potential safety hazards and energy waste caused by medium leakage. Secondly, the opening and closing operation is lightweight and effortless. The eccentric structure effectively reduces the frictional resistance during valve opening and closing. Compared to traditional valves of the same diameter, the operating torque can be reduced by more than 30%. Even large-diameter valves can be easily manually controlled, suitable for various manual and automated operation scenarios. Thirdly, the service life is significantly extended. The combination of erosion-resistant and wear-resistant sealing materials with low-wear opening and closing logic increases the overall lifespan of the valve by more than double compared to traditional valves. The long-term operation and maintenance costs are lower, helping enterprises save additional expenses on frequent valve replacement.
