| Code Number | Description |
|---|---|
| T-4110-1 | Direct Acting, Less Aspirator |
| T-4110-2 | Direct Acting, With Aspirator |
| T-4110-3 | Reverse Acting, Less Aspirator |
| T-4110-4 | Reverse Acting, With Aspirator |
| Code Number | Description |
|---|---|
| R-3710 Series | 0.005 or 0.007 inch Restrictors |