This device is available in various types or models including the CFF15SW (DN15, 1/2'', 29, 9, 27), the CFF20SW (DN20, 3/4'', 34, 9,5, 29, 5, 0,175), the CFF25SW (DN25, 3/4", 34, 9,5, 29,5, 0, 175), the CFF32SW 26,32 (DN32, 1" 1/4, 50,5, 14, 43, 0,600), the CFF40SW 32,75 (DN40, 1"1/2, 58,2, 14, 47, 0,600), and the CFF50SW 51,52 (DN50, 2", 70,5, 14, 54,5, 1,005).