Solution

Cross-Reference and Replacement Supply

Four installed patterns — YTC, Rotork YTC, SMC IP8000/8100 and Metso Neles NE700 — supplied from one factory.

Plants rarely standardise on one positioner. This range exists because the same buyer often has YTC units on the linear valves, an SMC pattern on packaged equipment and NE700 units on rotary valves.

Interchange is mechanical and functional, not brand: the IP8000/8100 pair is interchangeable with the IP6#00 series mounting, and the NE700 is field reversible between direct and reverse acting by turning the changeover piece and feedback cam.

Send the nameplate photograph of the installed unit. The factory answers with the matching model code and the bracket kit needed, rather than guessing from a description.