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Carbon Steel Forged Steel Ball Valve / Welded Ball Valve DN50-DN1200
Quick Detail:
Size & Pressure : 150# DN50-DN1200
300# DN50-DN1200
600# DN50-DN1200
900# DN50-DN900
1500# DN50-DN600
2500# DN25-DN3000
Description:
FULL WELDED BALL VALVE
1.Bow-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.Anti-fire safe design
When the trunnion ball valve be used normally,its sealed by seat and ball surface,seat retainer
sealed by O-ring and body,this is soft sealed and reliable sealing.When the seat and O-ring are
burnt,the seat retainer and body will be sealed by expanded graphite.Thus act anti-fire safe purpose.
3.Anti-static device
In order to prevent friction among ball,stem and PTFE that generates static electricity which may
light the combustibles and explosives that cause&
Carbon Steel Forged Steel Ball Valve / Welded Ball Valve DN50-DN1200
