Overview Top entry ball valve 

 DYQ340H Top entry ball valve, including valve, wedge-shaped ball, valve seats, valve cover, valve body sidewall opening up the wedge on the ball with mounting holes, wedge-shaped stem and ball joint connection, in the stem with the lower set of springs, spring ball as the first base to wedge in order to stem the boss on the set as another base, the stem and the top boss has a seal between the valve cover, in provided between the valve cover gasket and valve, as described in the section of the wedge-shaped seal, or the boss described with the corresponding inclined to push the valve cover surface and sealed with the seal constitutes a wedge, inclined plane to push the most Set in the bosses good the top surface of the elastic or a spring pressure of the medium used in the seal between the stem and the valve cover seal cross-section of wedge-shaped wedge-shaped seal with the sealing surface with the composition, the use of the sealing surface of the wedge principle more tight seal better. 


 CLASS 600 Top entry ball valve 





 NPS A A1 A2 WHB 
 2 "292 29529235015050 
 3 "356 35935640018876 
 4 "432 435,432,400,230,100 
 6 "559 562,559,500,300,150 
 8 "660 664,660,600,430,201 
 10 "787 791,787,600,445,252 
 12 "838 841,838,600,530,305 



 Top entry ball valve CLASS 900 







 NPS A A1 A2 WHB 
 2 "368 37136845016549 
 3 "381 38438150020074 
 4 "457 460,457,500,250,100 
 6 "610 613,610,600,320,150 
 8 "737 740,737,600,460,201 
 10 "838 841,838,600,475,252 
 12 "965 968,965,600,560,303 



 Top entry ball valve CLASS 1500 





 NPS A A1 A2 WHB 
 2 "368 37136850017549 
 3 "470 47347060020074 
 4 "546 549,546,600,250,100 
 6 "705 711,705,600,460,144 
 8 "832 841,832,600,470,192 
 10 "9,911,000,991,600,485,239 
 12 "1130 1146 1130600570287