Finding out the differences in the tools and equipment being used may give individuals a better understanding as to why some products have one type of tool and other products have another type of tool. When it comes to heavy machinery tools and equipment certain products may be safer to use than other products. Manufacturers who choose to use a dry vacuum pump understand that these pumps have a higher level of heat due to the fact that there is no liquid involved to create the vacuum that is needed. Also those choosing these products will know that they are not made of stainless steel but of iron which may also be a deciding factor in the type of pump they have chosen.