Pneumatic ball valve fault handling speed and accurate degree decides the degree of production devices are affected, the responsibility of the maintenance staff is the scene quickly and accurately judge and deal with the fault parts, pneumatic ball valve reduces the loss of the production of the affected to Z. Deal with fault principle is: after arrived at the scene hydraulic fitting manufacturer to ask to see, start, inside outside after first, after placement to; Processing order is: first check the external circuit, gas path, attachment (solenoid valve, air filtration pressure reducer, etc.), check the pneumatic actuators, Z after inspection Check the valve body. Here are several cases of pneumatic ball valve failure:
1, the executing agency action. There are four reasons, 1) to check in and out air filtration pressure reducer of its air pressure is, according to the situation the large air pressure or replace the air filter pressure reducer, 2) check whether there is any blocking phenomenon on solenoid valve, Air movement is normal, according to the situation the choking or replace solenoid valve; 3) check whether into the actuator air pressure rating, check whether there is any blocking phenomenon on speed controller; 4) check valve sealing element friction is too big, If there is a leak phenomenon or seal.
2, the executing agency action, but the torque is not enough. Check the adjusting bolt at the ends of the cylinder, with adjusted according to the condition of closed and locked to the appropriate location.
3, pneumatic ball valve can be used to switch on and off, but slow on or off. Inspection according to the following conditions: 1) check whether to need to adjust the speed controller of the actuator, because as the growth of the valve use fixed number of year, process piping and the valve itself Changes are required to adjust speed controller; 2) to check whether there is leakage phenomenon, cylinder in cylinder type O sealing ring damage can lead to valve slow; 3) check whether spring thrust decrease; 4) check cylinder lock valve action is sensitive for export , cylinder exhaust is normal.
4, actuator movement is normal, but the valve is not action. Reason may be that: 1) the valve core and valve seat's death; The clogging pipeline; 3) actuator and the valve core joint wear, fall off, etc.
5, actuator movement is normal, but the valve switch does not reach the designated position. Reason may be that: 1) pipe card plug valve foreign body in it; 2) medium pressure difference is too big, small rigidity, actuator valve closed lax; 3) fault caused by the body itself: if the ball valve, general For the sealing surface damage or leakage of stuffing box; If the lining fluoride hydraulic fitting supplier valve consists of valve body, valve core and valve seat, valve core and valve seat moving and cohesion, products of the body is equipped with the cylinder, the cylinder of the hydraulic cylinder of flip moving and cohesion, migration, and seat after cylinder to manipulate the gate of the power switch, then make it more simple, and the fitness of cylinder has hand can after appearance of relay or a valve to its manipulation, can then be long button to carry out the manipulation of gate valve, then more convenient.
Just want to use pneumatic ball valve pneumatic execution rotate 90 degrees for pneumatic valve operation method and small flip torque can be closed. Completely equivalent body wall for the media to the small friction resistance, direct flow. It is generally believed gate right immediately do open/close the application. Gate itself is the main characteristics of compact structure, easy to use and maintenance, use strong electrolyte, organic solvents, acids and general work materials such as gas, but also for the working environment of extreme substances, such as O2, hydrogen peroxide, methane and PVC, etc. Gate valve can be overall, also can be a combination.