The armature assembly is machinery part for piping system.  The model ACP981001 is made of stainless steel with voltage AC and DC, sealing with NBR and provides 0-16 bar / 0-240 psi pressure.  Since this product is mainly for piping system, the plunger and core are therefore made by a magnetic stainless steel specially designed for solenoid applications.  In the system, the guide tube is made with brass while the plunger is normally equipped with NBR rubber seals.  

This standard type armature assembly may physically caused noise of alternating current solenoid operated valves, which can be distrubing.  But weve used our professional designed team to reduce this disadvantage as possible as we can.  Established in 1986, Jinn Woei has been provided strict production line of armatures to boast exceptional quality and precision for your piping system.  

For more info: http://www.allproducts.com/machine/jinnwoei/armature_assembly.html