Eccentric half pneumatic ball valve use should be noted:

1, before installation check the eccentric half pneumatic ball valve inner cavity cleanliness, confirm parts perfect and no foreign body can be installed.

2. The ball valve drive device is divided into two kinds of manual and electric modes, which can be fitted according to the user's needs, and the valve should be installed and closed two times before the test. When used for a period of time, the valve leakage, can adjust the manual and electric drive device limit fastening bolts, because of eccentric structure, can fill the amount of wear, the adjustment must be read in detail "manual and electric Drive device manual."

3, ball valve eccentric shaft and valve seat seal pay adjustment must have experienced personnel to be able to proceed.

4, if the ball valve is not installed for the time being, should be stored in the dry and ventilated room, no bump or external force. The valve should be opened 5° to avoid the pressure of the seal ring to reduce the elasticity of long-term impact on the service life.

5, the new installation of the first Test water may be caused by transport or other causes of a slight leakage, the switch valve 5°~10° three, the valve will automatically adjust to the correct position.

6, Ball valve drive device limit position fastening bolts before the factory commissioning, not allowed to loosen. When the valve is used for a long period of time, if there is leakage, the drive device can be limit bit fastening bolts loosen, reverse clock rotation and lock the nut, and then the valve closed some, due to the role of eccentric to eliminate wear clearance, to ensure that the valve continues to use, must not loosen the drive device limit position fastening bolts in the case of forced close the valve, This can damage the driver.

7, eccentric half pneumatic ball valve is one-way sealing valve, the arrow on the body is the direction of the valve sealing, not the flow of the media, when installed as a cut-off valve, the arrow is the same as the media flow (that is, the forward installation), as the return valve, the arrow and the media flow opposite (reverse installation).