This series of products is a 3/2 and/or 5/2 pilot acting high performance solenoid valve of multi-function. For the same valve body, it is available in either Namur mounting or in-line mounting, and the 5/2 and 3/2 functions can be easily switched. The CV value of the spool valve is reaches to 2.79. The coil and the intrinsic safe circuit is hermetically sealed and protected by aluminum alloy enclosure which can be used in hazardous locations Ex ia IIC T6 Ga and Ex ia IIIC T85℃ Db approved by ATEX and IECEx.