If we don't have the thermal expansion valve you are looking for in stock, odds are we can build it for you. We stock a large range of valve components in house. Below is a chart showing the 3 major components needed to assemble a TXV (body, cartridge, element). On the right hand side you will also find a simple assembly process. Most locations have an assembly table where we will be happy to assist you in getting the right parts selected and put together.