1 Nachi movable iron core of the coil is lubricated in the oil, it is a wet coil that is subject to buffer, so it has the characteristics of small wear and long life.. 2 Due to the use of a wet wire, the commutating sound of the movable iron core is extremely small, the operation is quiet. 3 High pressure, and the large flow pressure loss is small: the fluid reaction force compensation and low pressure loss mechanism are thoroughly adopted to achieve the large flow rate of C01 of this level Low voltage loss . 4 Simple wiring: The wiring is simplified by using a standard configuration such as a dedicated junction box and COM terminals and indicator lights, and maintenance is more convenient.. 5 Plug-in coil, one-time replacement, easy installation.