How to solve the problems existing in the insulation ball valve

According to the problems existing in the insulation ball valve, make sure to improve the insulation ball valve sealing material and structure. 1) In a sealed cavity with high temperature resistant material of flexible graphite seal ring, at the back of the sealing ring with a taper section of the gasket, washer fitted behind the special structure of the screw, so by tightening the plug, plug will be passed to the gasket, washer cone section will squeeze the sealing ring, sealing ring deformation, make its tiejin, both inside and outside the radial bearing ring and body, so that insulation ball valve in the radial sealing structure of high temperature resistant, at the same time, by tightening the screw, produce pre tight seal between the sphere and valve seat, make its seal. （ 2) Also make corresponding improvement on the seat sealing structure, the insert structure, and the body bearing ring grooves dug up, groove bottom in sealed superior performance and high temperature resistance of the flexible graphite, can play a role at the bottom of the seat seal, and can play between the sealing deputy for heat bilges cold shrink compensation effect. In flexible graphite is mounted on the high temperature resistant metal seated, use long time use within temperature to 425 ℃ can be improved, so as to solve the thermal insulation ball valve cannot be used at 200 ℃ or more long time. And still can choose different material according to the requirement of the actual working condition of the seats. （ 3) Discharge role at the bottom of the pipe with plug is threaded connection, when the temperature rises, the threaded portion of seal is hard to guarantee, decided to cancel the plug, plug, which is connected with the bottom over changed into terraced drain plug and end connection with winding gasket seal, to ensure that at the bottom of the sealing reliability.