Each equipment and manufacturer will come with oits own valve package or recommendation. For example, if you are talking about Fan Coil Units', look up the manufacturer you are planning on using, and see what options they provide. This will give you the basics.
But you should compare to your company valve package is. Do you have a company details for the coil you are specifying? Select the manufacturer's package that rersembles it. Or if you want something sepcific and not provided by the manufacturer, then you wont buy the valve package from the manufacturer, and have the mechanical contractor build it in the field
knowledge is power
