When you order parts you will need to do the following:
Make sure you know the size, the ports, any options you want on there, need to know if it air, oil or some other type of fluids. And if you order the main valve, see if you need the secondary actutator. And lastly tell what type of spools you are wanting.
These are used with 1/8, 1/4, 3/8 and 1/2 inch models.
If you need more info on these type of control valves, call us at 662-871-8403