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600Lb Casting Floating Ball Valve With Worm Gear For Water Conservancy DN25-DN100
Quick Detail:
Size & Pressure : 150# DN25-DN250
300# DN25-DN250
600# DN25-DN100
Description:
CAST FLOATING 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.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
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&
600Lb Casting Floating Ball Valve With Worm Gear For Water Conservancy DN25-DN100
