1. Allowable value of valve stem diameter When selecting electric device for lifting valve, attention shall be paid to the allowable valve stem diameter, which must be less than this value. In addition, for the multi turn electric device, the requirements for the height of the valve stem cover (related to the valve diameter) should also be put forward when selecting it. Rotary stem valves may not be equipped with valve stem covers.

The dischargers of our company have 60 specifications. Relying on the advanced design concept of Botou casting city with excellent casting quality, we have added inspection holes on the basis of the original castings, which is more convenient for users to observe the ash feeding and unloading conditions at any time during the operation process, and ensure the normal operation of the ash unloading device of the dust remover. The inlet and outlet flange of the star discharger with electric control valve can be square or round. Various high-temperature ash discharge valves and anti-corrosion ash discharge valves can be developed according to customer requirements. Star type ash discharge valve, also known as air shut, is suitable for continuously and smoothly discharging dust or particles under pressure into the atmosphere. It is an important equipment in pneumatic conveying and ventilation dust removal network. The main working part of the star type ash discharge valve is the rotating impeller, which not only plays the role of conveying materials, but also plays the role of sealing. The utility model has the advantages of beautiful appearance, compact and reasonable structure, safe and reliable use, light weight, large capacity, low power consumption, etc.