A, Q21F ball valve product features external thread 

 PN :1.6-4 .0 MPa 

 Temperature range: -20 ~ 232 ℃ ~ 350 ℃ 

 Suitable medium: water, oil, gas in some corrosive liquids 

 Second, the thread connecting the main valve size and weight PN1.6MPa 



 Nominal by (mm) Dimensions (mm) 
 d L L1 M L0 Q61 length with butt welding head 
 6 8 85 15 20 × 1.5 110 166 
 10 10 85 16 24 × 1.5 110 166 
 15 10 85 18 30 × 2 110 172 
 20 13 90 18 36 × 2 110 187 
 25 17 100 20 42 × 2 110 227 
 32 22 120 20 52 × 2 235 
 40 25 135 25 60 × 3 150 255 
 50 32 140 25 72 × 3 180 291 

 Third, Q21F ball valve Major parts material external thread 



 Type ball valve, valve stem seals handle gaskets, packing 
 Q21F-16C, Q21F-25C 

 Q21F-40C, Q21F-64C 
 A105, 45 1Cr18/1Cr18Ni9Ti SS304 stainless steel, PTFE Teflon 

 PPL on bits of polystyrene 
 Teflon PTFE 

 PPL on bits of polystyrene 

 Q21F-16P, Q21F-25P 
 Q21F-40P, Q21F-64P 
 1Cr18Ni9Ti SS304/1Cr18Ni9Ti 
 Q21F-16R, Q21F-25R 
 Q21F-40R, Q21F-64R 
 SS316/1Cr18Ni12Mo2Ti SS316/1Cr18Ni12Mo2Ti