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300lb Free Leakage API 6D Casting Trunnion Ball Valve For Chemical , DN50-DN1200

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300lb Free Leakage API 6D Casting Trunnion Ball Valve For Chemical ,  DN50-DN1200
 
Quick Detail: 
 
Size & Pressure : 150# DN50-DN1200 
300# DN50-DN1200 
600lb DN50-DN1200 
900# DN50-DN900 
1500# DN50-DN600
   
 
Factory:

 
Description:
 
CAST TRUNNION BALL VALVE
1.Blow-out proof stem
For the purpose of preventing the stem from flying off  resulting in abnormal rising of the inner 
pressure of valve,shoulder is fixed at the lower part of the stem.In addition,in order to prevent 
leakage resulting from burnout of packing set of the stem in a fire,thrust bearing is set at the 
contact position of the shoulder at lower part of the stem and valve body.Thus an inverse seal 
seat is formed which will prevent leakage and avoid accident.
 
2.Key lock
Locks can be used to lock the manual valve when  it is fully open or closed so as to prevent 
non-working personnel from pulling the handle which may result in misoperation of valve.It can 
also avoid opening or closing of valve resulting from the shock from pipelines or unpredictable 
factors that may cause an accident.For working pipelines such as combustible and explosive oil,
gas and chemical medium,or for field piping site,the locking mechanism is especially useful.
 
3.Anti-fire safe design
300lb Free Leakage API 6D Casting Trunnion Ball Valve For Chemical , DN50-DN1200

 
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