1、Check that the ball valve is in full open position
After grease injection, check whether the diameter of the valve ball is flush with the plane of the inner chamber of the valve seat. If there is any difference, adjust the open limit bolt on the actuator to ensure that the international valve is fully open. Otherwise, once the valve is installed, it is impossible to judge whether the valve is fully open.
2、The valve cannot fill with grease
⑴The sealing pressure in the valve shaft (stem) shall not exceed 20.68mpa when the grease injection operation is carried out. Once the pressure is exceeded, the grease gun should be checked for faults and the outlet valve at the grease outlet of the grease injection gun should be opened.
⑵If the valve grease gun is trouble-free, please check whether the grease nozzle is blocked, that is, slowly twist the grease nozzle and install it in the grease outlet hole of the grease gun. Through the grease injection into the grease nozzle, observe whether the grease injection nozzle can produce grease. If the grease injection nozzle can produce grease, it is necessary to check the one-way valve located in the grease injection hole downstream of the grease injection nozzle, and use special tools to screw it out for inspection.
3、Uneven fat output from fat injection hole
Sometimes before and after the valve on the valve seat seal on the pipe blockage, the seat greasing holes appear the phenomenon of uneven fat or not fat, at this point, the valve from fully open close observation after 15 ° ~ 25 ° seat grease holes, and gently smooth, soft tools for greasing observation. Special attention should be paid to the valve ball in the rotation process can not grease, so as not to damage the seat seal. In general, each side of the ball valve seat with 4 grease injection nozzle is more uniform, there are 2 grease injection nozzle is relatively uneven.
English 
German 
Spanish 
French 
Russian 
Portuguese 
Turkish