DF08-02 check valve threaded cartridge ball seal valve

1. Check whether its core is stuck: For example, the mating gap between the outer diameter button of the valve core and the inner diameter of the valve body hole is too small (especially when the newly used one-way valve is not worn), and dirt enters the mating gap between the valve body hole and the valve core, and the valve core of the one-way valve is stuck in the open or closed position. Can be cleaned and deburred.

2. Check whether the burr on the edge of the undercut groove in the valve body hole is cleared, and lock the valve core of the hydraulic one-way valve in the open position.

3. Check whether the contact line between the valve core and the valve seat can still be sealed: for example, there is dirt stuck at the contact line or a gap at the contact line of the valve seat, which cannot be sealed. At this time, you can also check the inner edge of the contact line between the valve seat and the valve core. If dirt is found, clean it in time. When the valve seat has a gap, it can only be knocked out for a new one.

4. Check the fit between the valve core and the valve body hole: the fit clearance between the outer diameter knob of the valve core and the inner diameter D of the valve body hole is too large, so that the valve core can float radially. In Figure 2-14, there is just dirt stuck, and the valve core deviates from the center of the valve seat (eccentricity e)', which causes the internal leakage to increase, and the check valve core will open wider and wider.

5. Check the spring to see if it is missing or the spring is broken, then it can be replenished or replaced.

The above content is about troubleshooting the failure of hydraulic one-way valve. Generally, we can see the problem from these points. Of course, if we check according to these points and find nothing, we can only call a professional maintenance engineer to check it.

As we all know, hydraulic valve is a kind of automation components operated by pressure oil, which can be well controlled by pressure oil. Generally, it is used in combination with electromagnetic pressure distribution valve, and can be used to remotely control the on-off of oil, water and pipeline system of hydropower station. The core component of the valve is the hydraulic valve block, which plays an important role in controlling the direction, pressure and flow of liquid flow.

The use can not only simplify the design and installation of the hydraulic system, but also facilitate the integration and standardization of the hydraulic system, which is conducive to reducing the manufacturing cost and improving the accuracy and reliability.