EGR Valves Types
There are three basic types of EGR valves. Pneumatic EGR valves have a vacuum controlled diaphragm. These valves can enable a higher flow rate that is required by newer diesel applications. Electric EGR valves are controlled through integrated electronics. These valves are run directly by the engine’s control unit and can be much more precisely regulated. And then there are electric EGR valves that have a cooling unit to further reduce the temperature of the exhaust gases.
The new range has the same high quality like all the other products that NGK SPARK PLUG are renowned for. To ensure this, all our valve types have undergone and passed testing carried out in extreme conditions. This includes thermal shock testing in temperatures ranging from -40°C to 150°C, tests on valve, cavity and cooling leakage, as well as electrical resistance and lifecycle.