Cleaning and Lubrication
Ball valves act like the joints of a piping system and require regular cleaning to operate smoothly. Wipe the exterior of the valve body monthly with a soft cloth to prevent dust accumulation. For internal cleaning, disassemble the valve and rinse the ball and seat with a neutral detergent; avoid using abrasive tools like steel wool, which can scratch the surfaces. When lubricating, use a specialized valve grease and apply a thin, even layer to the contact surfaces between the stem and the ball; this reduces wear and improves sealing performance.
Checking for Leaks
Want to know if your ball valve is leaking gas or water? Try this three-step inspection method:
Soapy water test: Apply soapy water to the sealing areas and watch for bubbles.
Pressure test: Close the valve and monitor the downstream pressure gauge for changes.
Auscultation method: Press a screwdriver against the valve body and place your ear against the handle to listen for hissing sounds.
If a minor leak is detected, first try tightening the bolts; if that fails, the seals must be replaced.
Operation and Storage Tips
Do not force the handle if you encounter resistance or sticking! Follow these correct operating procedures:
If you encounter resistance, rotate the handle 5° in the opposite direction before turning it forward again.
For large-diameter valves, apply force evenly with both hands.
For valves equipped with a gearbox, cycle the valve (operate it through its full range of motion) three times a week to prevent rust.