Pump Sizes:

Group 1 Bearing Frame:
C1.5/1-6 = 1.5x1x6 CSO
C3/1.5-6 = 3x1.5x6 CSO
C3/2-6 = 3x2x6 CSO
C1.5/1-8 = 1.5x1x8 CSO

Group 2 Bearing Frame:
C3/1.5-8.5 = 3x1.5x8.5 CSO
C3/2-8.5 = 3x2x8.5 CSO
C4/3-8.5 = 4x3x8.5 CSO
C6/4-8.5 = 6x4x8.5 CSO
C2/1-10 = 2x1x10 CSO
C3/1.5-11 = 3x1.5x11 CSO
C3/2-11 = 3x2x11 CSO
C4/3-11 = 4x3x11 CSO
C6/4-11 = 6x4x11 CSO
C3/1.5-13 = 3x1.5x13 CSO
C3/2-13 = 3x2x13 CSO
C4/3-13 = 4x3x13 CSO
C6/4-13 = 6x4x13 CSO

Group 3 Bearing Frame:
C8/6-13 = 8x6x13 CSO
C10/8-13 = 10x8x13 CSO
C8/6-15 = 8x6x15 CSO
C10/8-15 = 10x8x15 CSO

For those that do not know, the first number in the above pump designation refers to the suction nozzle nominal bore, the second to the discharge nominal bore, and the third to the full impeller diameter.

As with the original range, the Tuff Pumps C Series equivalents can be supplied with standard gland packed stuffing boxes, mechanical seals, or dynamic/expeller type sealing arrangements.