Q641F, Q641Y type PN16 ~ PN63 pneumatic valve: Pneumatic, flanged, floating the ball straight-through structure, the valve seat sealing surface material is PTFE, PTFE enhanced plastic (Q641F), cobalt base metal welding (Q641Y), nominal pressure PN16 ~ PN63, body material for the WCB, CF8, CF8M, alloy steel ball valves. 

 Product performance parameters 
 Q641F, Q641Y type PN16 ~ PN63 main performance parameters of models of pneumatic valve working pressure PN / MPa for the temperature / ℃ Suitable Medium 
 Q641F-16C 16 1.6 ≤ 180 water, gas, oil 
 Q641F-25 25 2.5 
 Q641F-40 40 4.0 
 Q641Y-16C 16 1.6 ≤ 425 water, gas, oil containing granular media 
 Q641Y-25 25 2.5 
 Q641Y-40 40 4.0 
 Q641F-16P 16 1.6 ≤ 180 nitric acid 
 Q641F-25P 25 2.5 
 Q641F-40P 40 4.0 
 Q641Y-16P 16 1.6 ≤ 450 water, gas, oil containing granular media 
 Q641Y-25P 25 2.5 
 Q641Y-40P 40 4.0 
 Q641F-16R 16 1.6 ≤ 180 nitric acid 
 Q641F-25R 25 2.5 
 Q641F-40R 40 4.0 
 Q641Y-16R 16 1.6 ≤ 450 water, gas, oil containing granular media 
 Q641Y-25R 25 2.5 
 Q641Y-40R 40 4.0 
 Q641F-16I 16 1.6 -29 ~ 150 water, steam, oil, etc. 
 Q641F-25I 25 2.5 
 Q641F-40I 40 4.0 
 Q641F-63I 63 6.3