Valve Housing is a key auto valve fitting to assist valve to control the flow of air or liquid through the tube. If your valve in a corrosive environment and the valve housing can't resist corrosion, it will reduce the durability.The inappropriate valve housing and valve fittings will influence valve performance as well. So, choosing the right valve housing and valve seal material is critical to the running of an automobile valve and the whole system. The core characteristics, materials, properties of the automotive valve housing and application environment should be taken into consideration, including temperature, corrosion possibility, wear characteristics and pressure. The valve body is an important part of the vehicle's automatic transmission frame. It works in the system framework. The valve body directs the pressurized transmission fluid to the valve system, which is equipped with a suitable handle assembly to smoothly shift the gears. Also, the valve uses the weight of the pressure drive flag to determine the gear set, otherwise it is called servo. This process will be performed when the speed changes from low to high or vice versa. Material Available Stainless Steel:SS201,SS301, SS303, SS304, SS316, SS416 17-4PH etc. Steel:mild steel, Carbon steel, 4140, 4340, Q235, Q345B, 20#, 45# etc. Brass:HPb63, HPb62, HPb61, HPb59, H59, H68, H80, H90 etc. Copper:C11000,C12000,C12000 C36000 etc. Aluminum:AL6061, Al6063, AL6082, AL7075, AL5052, A380 etc. Iron :A36, 45#, 1213, 12L14, 1215 etc. Plastic:ABS, PC, PE, POM, Delrin, Nylon, Teflon, PP,PEI, Peek etc.