Quality Control


Diesel injector control valve set's quality control includes production and installation, warranty's information.

Production & Installation

The injector valve sets are produced in dust-free workshop. The production steps include pre-heat treatment, post-heat treatment and CNC surface treatment. During each produce process, we strictly check every part's quality and exclude bad quality parts so as to make sure our products meet usage standard.

When install valve set, please follow below precautions:

. Clean the injector valve assembly in an ultrasonic cleaner for 3-5 minutes before installation, so as to make the stains, dust, rust-proof oil oxides, paraffin base, naphthenic base, intermediate base,salt, lead naphthenate, zinc naphthenate, sodium petroleum sulfonate, barium petroleum sulfonate, calcium petroleum sulfonate, tallow diamine trioleate, rosinamine on the surface of the valve assembly fall off.

. Use compressed air to clean the cleaning fluid attached to the surface of the valve assembly after cleaning, and clean it up to the standard of use. See as below:

. When installing the valve stem, make sure that the valve stem and the bonnet must ensure that the valve stem can move smoothly in it. See as below:

. If the injector steel ball and the ball seat are not installed in accordance with the standard, it may cause serious damage to the injector valve assembly.


Dieselcontrolvalveset.com has a mature business trading system and provides services such as replace, repair, refund etc,. to our customers, and Dieselcontrolvalveset.com also provides 6-12 months of warranty of each part sent to our customers. When you product's quality problem, we will help you to solve it until you are satisfied.

diesel control valve set warranty service