Standard features of ball valves

Double block drainage: the residual liquid in the valve body can be released when the valve ball is fully closed The valve body drilling valve can be designed with full drilling or reduced drilling Cutback drilling belongs to venturi model, and Zui small drilling size meets the requirements of API 6D Body construction: the body is manufactured in three types: split or welded or top entry Separate or welded design as side entry type valve It consists of three types of forged steel plates bolted or welded The valve top inlet is mainly made of a piece of cast steel Anti static design: stainless steel spring makes the static electricity between the metal parts of the valve body conduct continuously (i.e valve body, valve ball, sealing ring and shaft), and can be sealed and isolated by artificial rubber or thermoplastic seal Unbalanced pressure: unless otherwise specified, when the valve is opened, we do not provide flange drilling for the valve ball to balance the pressure between the fluid in the pipeline and the residual fluid in the valve body This can play a preventive maintenance, we do not need to test the working condition of the filter line, but make the ball seal on any scale play a check role Anti blowout valve shaft design: the valve shaft is separated from the valve ball, so that the bushing near the valve cover can ensure gas impact through self-lubricating gasket Two way seal rings: each seal ring is an independent suspension type and is suitable for shut-off fluid in addition to the pressure through the valve body In this way, the double backrest seal forms a double boundary for the fluid, because the downstream backrest seal ensures the closure to prevent the upstream backrest seal from failure If the ultra-high pressure of the fluid remaining in the valve body cannot be released, the slow closing valve can release the liquid at the interface Double seal valve shaft: the artificial rubber double O-ring is provided by the PTFE material backrest, which can play the role of double axis boundary for the fluid The external O-ring is replaced by the valve under pressure