Repair of ball valve

Repair of ball valve

Only ball valves with a dismountable body are subject to repair. Welded ball valves are not repairable and must be replaced in case of failure.

Possible malfunctions and ways to fix them

Malfunction Cause Remedy
Does not seal off flow Damaged or insufficiently tight fitting end seals to the ball 1. Tighten the clamping bolts that press the end seal against the ball.
2. If the end seals are damaged, they should be replaced.
- // - Abrasive wear of the ball (the valve was in a semi-open state, which is not allowed) Replace the ball, and install a mesh filter in front of the valve to catch solid particles that damage the ball.
Leakage along the stem Damaged stem seal 1. Tighten the nut that presses the sealing ring (seal).
2. Replace the sealing ring (seal).
Cannot open/close Ball seized Disassemble the valve, clean the surface of the ball, and replace the end seals if necessary.
To avoid recurrence of the malfunction, it is recommended to periodically open/close the valve during operation.

Attention! Before repairing a ball valve, the area on which it is installed must be drained. Repair work on a ball valve under pressure is not allowed.

question : comment : feedback

where to notify about the reply. not published anywhere

185

DN
Nominal diameter DN
mm
PN
Nominal pressure PN
bar
add your product to the catalog

community of experts

We are gathering a community of experts in the design, installation, and service of heating, hot water, and water supply systems in United States. Join the community and you will receive emails with requests for work in United States from our visitors.

design
installation
service
heating
water supply
conditioning
dealers
advertising on the website
4 090 visitors yesterday
visitors per month
28 256 from United States
74 238 from all countries