Performance Testing

The performance testing of DRV pressure regulating valve includes electrical characteristics, accuracy, the tolerance of high temperature, low temperature, pressure as well as leakage, durability and others working conditions testing. These conditions of each DRV pressure regulating valve will be tested before our DRV pressure regulating valves are sent to customers.

Above are the tests needed to be done after the DRV pressure regulating valves are finished producing. However, regular checking also very important to keep the DRV pressure regulating valve perform well.

In order to make sure the DRV pressure regulating valve works normally, there are some parts of DRV pressure regulating valve needed to be checked regularly and before installing to injector.

① Check whether there is deformation, cracking, thread damage, quenching, leakage and rust in the guide sleeve, spring, gasket and tight cap of the DRV pressure regulating valve. The tight cap of the DRV pressure regulating valve must be replaced after being disassembled for more than 5 times, as shown in the following.

② Replace the tight cap of the DRV pressure regulating valve and the copper gasket of the DRV pressure regulating valve

③ Check whether the gap between the DRV pressure regulating valve needle and the DRV pressure regulating valve shell is within the standard range and whether it reaches the standard for use

④All parts should be examined for wear under a microscope at least 20 times larger

⑤ DRV pressure regulating valve tight cap deformation, cracking, thread damage, quenching, leakage, will lead to black smoke vehicle cap, diesel injector damage.

⑥injector opening pressure greater than or less than the specified range may cause injector damage.
⑦ Failure to replace wearing parts in time during maintenance may lead to diesel injector damage.

These are some precautions you need to know to maintain an DRV pressure regulating valve. If there are more questions about DRV pressure regulating valves and other problems, you are welcomed to contact us, dieseldrvvalve.com will do the best to help you solve your problems.