How can the eccentric hemisphere valve be repaired? What are the things you should pay attention to when installing?
4 ball valve, if temporarily not installed, should be stored in dry and ventilated room, no bump or force. Need to open the valve 5 degrees, avoid sealing ring long-term pressure, reduce flexibility and affect the service life.5, the new installation of the valve, the first test water may be due to transport or other causes of minor leakage, can switch the valve 5 degrees to 10 degrees, two or three times, the valve will automatically adjust to the correct position.
Standard light valve professionals to answer for you, eccentric semi spherical valve installation methods and precautions:1. Check the cleanliness of the inner cavity of the valve before installation. Make sure the parts are perfect and no foreign objects can be installed.2, ball drive device breaking up, moving and electric way two, can be installed according to user needs, valve installation before test, start and shut two times. When after a period of time, there is a leak valve, adjustable manual and electric driving device for limiting the fastening bolt due to eccentric structure, can compensate for the wear, you must read the "manual and electric drive manual adjustment".3, eccentric axis and valve seat sealing adjustment, must be experienced personnel can be carried out.
6, the valve driving device to a fastening bolt before debugging, not allowed to loose. When the valve is used for a long period of time if there is leakage, the driving device limiting fastening bolts loose, counterclockwise rotation of a circle and a locking nut, the valve closed, due to eccentric action to eliminate wear clearance, to ensure that the valve to use, must not be forced to close the valve without release driving device a fastening bolt limit case, this will damage the drive device.7, eccentric semi ball valve is a one-way valve seal, valve seal for the arrow on the body, rather than the medium flow, installation when used as a cut-off valve, and the same medium flow arrow (i.e. being installed), when used as a check valve is used, instead the arrow with the direction of medium (reverse installation).
