Sphere rushed over, assembly should correctly, smooth operation, does not allow for the use of throttle valve; Sphere should be timely after rushed over to repair, replace seal used for throttling and damage the sealing surface: do not allow for throttling sealing surface crushed: tighten the seat bolts should be uniform, force is smaller, the better to close a few times more, not a tight too much too tight, damage the sealing surface of crapping to repair can be no preloaded pressure: preloaded pressure Industrial Valves seat sealing surface should be inspected periodically and found a leak or sealing surface contact should be a little loose pressure valve seat sealing surface; Prepressing spring loss effect change wrench, and the stem and ball joint gap is big, the wrench has to close down, from leakage and sphere rotation Angle less than 90 ° : limited institutional wrench, the stem and ball joint looseness 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 seat and ontology interface is not smooth, wear and tear, damage the seat leakage: 0 rings increase seat and body contact surface finish, decrease The Times of the seat remove o-ring regular replacement of rubber sealing ring aging, wear and tear: rubber seal face clamping ring is loose, replace the sealing surface damage on a regular basis: compression ring should be to tighten loose, damage to the flow direction of medium and severe corrosion should replace wrong: butterfly Industrial Valves should be installed according to the medium flow arrow stem and disc joint loose valve is lax: remove the butterfly valve, repair the Industrial Valves stem and disc joint actuator and the valve stem damage, makes the sealing face closed lax: repair, badly damaged should be replaced
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