Type D : 7-5/8 inch dia. dial case and 14-3/4 inch in height pressure range : 0-6,000 psi Standard end connection : 2 inch NPT female Type F : 4-7/8 inch dia. dial case and 9-7/8 inch in height .Pressure range : 0-20,000 psi Standard end connection : 2'' NPT male.