A ball valve and plug is the same type of valve, only pieces of it off is a sphere, the sphere around the center line of a rotary valve to achieve open and close a valve. 
 Valve in the pipeline is mainly used to make cut, distribution and change the direction of media flow. Ball is widely used in recent years a new type of valve. 

 The main performance specifications 






 Model 
 Nominal pressure PN (MPa) 
 Test pressure (MPa) 
 Temperature (℃) 
 Medium 

 Case 
 Liquid seal 
 Gas seal 

 Q44F-16P/C/R 
 16 
 24 
 1.76 
 0.6 
 ≤ 150 
 Water, steam, oil, etc. 

 Q44F-25P/C/R 
 2.5 
 3.75 
 2.75 
 0.6 

 Q44F-40P/C/R 
 4.0 
 6.4 
 4.4 
 0.6 


 Main parts 



 Model 
 Part Name 

 Body 
 Sphere 
 Stem 
 Ring 
 Filler 

 Q44F-1 6C 
 Carbon steel castings 
 1Crl8Ni9Ti 
 2Cr13 
 PTFE alignment polystyrene 
 PTFE 

 Q44F-25P 
 304 
 304 
 304 

 Q44F-40R 
 316 
 316 
 316 


 Main external and connecting dimensions 



 Nominal pressure PN (MPa) 
 Main dimensions 
 Nominal diameter {mm / in} 

 15/1/2 
 20/3/4 
 25 / 1 
 32/11/4 
 4/11/2 
 50 / 2 / 
 65/21/2 
 80 / 3 
 100 / 4 
 125 / 5 
 1 / 50 / 6 
 200 / 8 

 PNl.6MPa 
 L 
 1 50 
 164 
 180 
 200 
 220 
 230 
 260 
 280 
 320 
 380 
 440 
 500 

 PN2.5MPa 
 L1 
 75 
 82 
 90 
 100 
 110 
 115 
 130 
 140 
 160 
 190 
 220 
 250 

 PN4.0M Pa 
 H 
 90 
 90 
 102 
 115 
 135 
 140 
 155 
 185 
 21O 
 275 
 305 
 335 

 CLASSl50 
 W 
 120 
 140 
 155 
 250 
 250 
 35 
 350 
 420 
 700 
 1000 
 130 
 1800 




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