One. Structure and characteristics
1. Fluorine plastic fully lined J41F46 type straight-through type, J45F46 type direct-flow type, J44F46 type angle type globe valve, has the advantages of compact structure, flexible opening and closing, strong corrosion resistance, short stroke (generally 1/4 of the nominal diameter), etc. , It is widely used in petroleum, chemical and other pipeline systems to cut off the medium, but it needs to be emphasized that the fluorine plastic lined stop valve is strictly prohibited to be used for flow adjustment, so as to avoid the high-speed medium flow generated at the throttle orifice from eroding and damaging the sealing surface .
2. The design and integrated structure of the valve clack and valve stem are used to prevent the possibility of internal parts rushing out of the valve body due to pipeline pressure fluctuations. The structure is compact and safe to use.
Two. The design specifications follow the GB 12233/GB 12235 standard.
Three. Drive mode: manual, gear drive, pneumatic (normally open or normally closed), electric.