Installation, Maintenance and Disassembly of Floating Ball Valves
Installation
1. The ball valve is in the open position.
2. Ball valves allow fluid to flow in from either side. In order to ensure a good installation, they should be installed according to the actual situation of standard pipeline transmission.
3. Use the flange bolts of corresponding specifications, and tighten the flange bolts according to the requirements of the gasket manufacturer.
4. If leakage is found at the valve stem seal during installation, it is because the ball valve is subject to great temperature changes during transportation. Simply adjust the packing as described in the maintenance section to restore the seal.
Maintenance
1. Routine maintenance requires regular inspection to ensure that the ball valve operates well. Routine maintenance includes tightening the gland bolts regularly to compensate for the wear of the valve rod seal.
2. Overhaul includes replacement of sealing seat and packing.
3. The standard maintenance spare parts include a seal seat, a valve stem seal and a PTFE gasket.
Disassembly
For safety, the following items must be noted before the ball valve is removed or disassembled from the pipeline:
1. When disassembling the ball valve, do not touch the inner cavity of the valve with your hands.
2. Know the medium in the pipeline, and check with relevant personnel if in doubt.
3. Wear protective clothing according to routine requirements when contacting media.
4. When the ball valve and pipeline are under pressure relief, open the ball valve before it is removed from the pipeline, and empty the pressure that may remain in the ball valve, so that the ball valve is in the open position. After removing the ball valve and before disassembling, place the ball valve vertically; open and close the ball valve repeatedly, and discharge the residual medium.
5. The safe and correct use of this type of ball valve mainly depends on the rated value of the sealing seat and valve body. The overall rating of the valve body and seal seat is also related to the type, specification, seal seat material and bolt material of the valve. The working conditions of the ball valve should not exceed these ratings.
1. The ball valve is in the open position.
2. Ball valves allow fluid to flow in from either side. In order to ensure a good installation, they should be installed according to the actual situation of standard pipeline transmission.
3. Use the flange bolts of corresponding specifications, and tighten the flange bolts according to the requirements of the gasket manufacturer.
4. If leakage is found at the valve stem seal during installation, it is because the ball valve is subject to great temperature changes during transportation. Simply adjust the packing as described in the maintenance section to restore the seal.
Maintenance
1. Routine maintenance requires regular inspection to ensure that the ball valve operates well. Routine maintenance includes tightening the gland bolts regularly to compensate for the wear of the valve rod seal.
2. Overhaul includes replacement of sealing seat and packing.
3. The standard maintenance spare parts include a seal seat, a valve stem seal and a PTFE gasket.
Disassembly
For safety, the following items must be noted before the ball valve is removed or disassembled from the pipeline:
1. When disassembling the ball valve, do not touch the inner cavity of the valve with your hands.
2. Know the medium in the pipeline, and check with relevant personnel if in doubt.
3. Wear protective clothing according to routine requirements when contacting media.
4. When the ball valve and pipeline are under pressure relief, open the ball valve before it is removed from the pipeline, and empty the pressure that may remain in the ball valve, so that the ball valve is in the open position. After removing the ball valve and before disassembling, place the ball valve vertically; open and close the ball valve repeatedly, and discharge the residual medium.
5. The safe and correct use of this type of ball valve mainly depends on the rated value of the sealing seat and valve body. The overall rating of the valve body and seal seat is also related to the type, specification, seal seat material and bolt material of the valve. The working conditions of the ball valve should not exceed these ratings.
