The electric wafer ball valve is simple in structure, small in size and light in weight, and is composed of only a few parts. And only need to rotate 90 ° to quickly open and close, simple operation, and the valve has good fluid control characteristics. When the ball valve is in the fully open position, the thickness of the valve plate is the only resistance when the medium flows through the valve body. Therefore, the pressure drop generated by the valve is very small, so it has good flow control characteristics. The tower valve has two types of sealing: elastic seal and metal seal. Elastic sealing valve, the sealing ring can be embedded on the valve body or attached to the periphery of the valve plate. Valves with metal seals generally have a longer life than valves with elastic seals, but it is difficult to achieve complete sealing. Metal seals can adapt to higher operating temperatures, while elastic seals have the disadvantage of being limited by temperature.
Product Parameters
| Nominal diameter | DN15-DN250 | |||
| Nominal pressure | PN 1.6-6.4Mpa | |||
| Test pressure | Strength test | PN2.4-9.6Mpa | ||
| Seal test | PN1.76-7.0Mpa | |||
| Applicable medium | water,steam,oil | nitrose | acetic acid | |
| Applicable temperature | -28℃~400℃ | -28℃~500℃ | ||
| Connection type | butt clamp,flange(JB79-59) | |||
| Material code | C | P | R | |
| Materials | Body | WCB | 304 | 316 |
| Plate | WCB | 304 | 316 | |
| Stem | stainless steel | |||
| seal ring | PTFE,stainless steel,hard alloy | |||
| Packing | PTFE,flexible graphite | |||
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