Azelastine Hydrochloride Intermediate,Azelastine Hydrochloride,Azelastine Hydrochloride Api,Azelastine Hydrochloride Cas 79307-93-0 Shandong Bolode Bio-technology Co., Ltd. , https://www.bldpharma.com
2. Determine the nominal diameter and connection method of the pipe connected to the pneumatic control valve: flange, thread, welding, etc.
3. Determine the type of pneumatic regulating valve: gate valve, globe valve, ball valve, butterfly valve, throttle valve, safety valve, pressure reducing valve, steam trap, etc.
4, determine the action mode can be divided into: straight stroke and angular stroke two ways.
5. Select the type of pneumatic regulating valve: closed-circuit pneumatic regulating valve, adjusting pneumatic regulating valve, safety pneumatic regulating valve, etc.
6. Determine the parameters of the pneumatic regulating valve: For the automatic pneumatic regulating valve, determine the allowable flow resistance, discharge capacity, back pressure, etc. according to different needs, and then determine the nominal diameter of the pipe and the diameter of the seat hole. (021famen.cn)
7. Determine the way to operate the pneumatic control valve: manual, electric, electromagnetic, pneumatic or hydraulic, electrical linkage or electro-hydraulic linkage.
8. Determine the material of the housing and internal parts of the selected pneumatic regulating valve according to the medium, working pressure and working temperature delivered by the pipeline: gray cast iron, malleable cast iron, ductile iron, carbon steel, alloy steel, stainless acid-resistant steel, copper alloy Wait.
9, after Zui determine the use of precautions.
Precautions for the selection of pneumatic control valve
1. Defining the use of the pneumatic regulating valve in the equipment or device, determining the working conditions of the pneumatic regulating valve: applicable medium, working pressure, working temperature, and the like.