| 731 MC | 3/2 1/8" NC pneumatic pilot, spring return |
| 731 MCA | 3/2 1/8" NO pneumatic pilot, spring return |
| 751 MC | 5/2 1/8" pneumatic pilot, spring return |
| 731 CC | 3/2 1/8" double pneumatic pilot |
| 751 CC | 5/2 1/8" double pneumatic pilot |
| 731 CCD | 3/2 1/8" double pneumatic pilot, with differential |
| 751 CCD | 5/2 1/8" double pneumatic pilot, with differential |
| 731 CFP | 3/2 1/8" NC pneumatic pilot, pneumatic spring return |
| 751 CFP | 5/2 1/8" pneumatic pilot, pneumatic spring return |
| 7513C CC | 5/3 1/8" closed centres, double pneumatic pilot |
| 7513A CC | 5/3 1/8" open centres, double pneumatic pilot |
