SD643H telescopic pneumatic valve 

 First, application of pneumatic telescopic butterfly 

 Pneumatic telescopic flange butterfly valve within a certain range of axial stretching, but also a certain point in the pipeline within the docking of different axis to overcome the resulting offset, can greatly facilitate the installation and removal of the valve pipeline. Application in the food, beverage, pharmaceutical and industrial environmental clean pipe, water treatment, high building, to open and close or adjust the drain line for the media flow purposes. 
 Standard pneumatic telescopic valve: flange connection dimensions GB4216.4-84; GB9115.8-8 structure, the length of GB12221-89 pressure test GB/T13927-92; ZBJ16006-90 





 Telescopic pneumatic valve (with AW cylinder) 
 Telescopic pneumatic valve 



 Second, the main parameters of pneumatic telescopic butterfly 


 Nominal diameter DN (mm) 
 50 ~ 1000 

 Nominal pressure PN (MPa) 
 1.00.6 
 0.25 


 Test pressure Ps 
 (MPa) 
 Strength test 
 1.50.9 
 0.375 


 Seal test 
 1.10.66 
 0.275 


 For media 
 Water, sewage, steam, oil, water, etc. 

 Suitable temperature 
 -40 ℃ ~ 200 ℃