The butterfly pneumatic valve and ball valve troubleshooting and prevention analysis

sphere rushed over, assembly should correctly, smooth operation, does not allow for the use of pneumatic valve throttle; Sphere should be timely after rushed over to repair, replace seal seat
used for throttling, damage the sealing surface: do not allow for throttling
sealing surface crushed: tighten the pneumatic seat bolts should be uniform, force is smaller, the better to close a few times more, not a tight too much too tight, the damage of the seal face can be crapping to repair
no preloaded pressure: preloaded pressure pneumatic valve seat sealing surface should be inspected periodically and found a leak or sealing surface contact should be a little loose pressure pneumatic valve seat sealing surface; Preloading spring loss effect change
wrench, pneumatic valve stem and ball joint gap is big, the wrench has to close down, from leakage and sphere rotation Angle insufficient ° : limited institutional wrench, pneumatic valve stem and ball joint is loose and clearance is too large, shall repair, and tighten to prison; Adjust spacing block, eliminate wrench advance Angle, make the correct opening and closing sphere
pneumatic seat and ontology interface is not smooth, wear and tear, ring damaged pneumatic seat leakage: improve the pneumatic valve seat and body contact surface finish, decrease The Times of pneumatic valve seat remove o-ring replaced periodically
rubber sealing ring aging, wear and tear: rubber sealing surface replaced periodically clamping ring is loose,
seal face damage: compression ring should be to tighten loose, damage to the flow direction of medium and severe corrosion should replace
wrong: butterfly pneumatic valve should be installed according to the medium flow arrow
pneumatic valve stem and disc joint loose pneumatic valve is lax: remove the butterfly pneumatic valve, pneumatic valve stem and disc repair joint
transmission device and pneumatic valve stem damage, makes the sealing face closed lax: repair, badly damaged should be replaced