O-type hard seal ball valve
O-type hard seal cut-off ball valve (hereinafter referred to as cut-off ball valve) adopts metal hard seal structure, which improves the service temperature of the ball valve, expands the service range of the ball valve, and also improves the comprehensive technical parameters of the ball valve, making it adapt to the trend of high parameterization; The valve core adopts full bore, large rated flow coefficient, small flow resistance, excellent sealing and long service life. Therefore, it is widely used to cut off or open the medium in gas, liquid, slurry and other transmission pipelines in petroleum, chemical, pharmaceutical, metallurgy, light textile, papermaking, sewage treatment and other departments, so that the production process can be carried out according to a certain procedure.
Standard specifications
Body part
Type | O-type hard seal ball valve |
Nominal diameter | DN15~DN200mm |
Flow characteristics | Quick opening |
Nominal pressure | PN series: 1.6Mpa, 2.5MPa, 4.0Mpa, 6.3Mpa Class series: Class 150, Class 300 |
Connection mode | Flange type (RF, MF), Socket welding, Butt welding |
Material of valve body and trim | WCB、CF8、CF8M① |
Surface coating color | When the valve body is carbon steel, silver gray (epoxy resin); When the valve body is stainless steel, the body is not coated. |
Note ①: the materials of valve body and valve internals can be manufactured according to the standards specified by users.