How to Order / Range Codes
| Range Code | Range (PSI) | Inches of Water Column Range Codes ("WC) | Range "WC |
| 3 | 0-3 | 6" | 0-6 |
| 5 | 0-5 | 10" | 0-10 |
| 10 | 0-10 | 16" | 0-16 |
| A | 0-15 | 25" | 0-25 |
| B | 0-30 | 40" | 0-40 |
| C | 0-60 | 60" | 0-60 |
| D | 0-100 | 100" | 0-100 |
| E | 0-160 | 160" | 0-160 |
| F | 0-200 | 200" | 0-200 |
| G | 0-300 | 250" | 0-250 |
| H | 0-400 | 6"-0 | VAC 6-0 |
| I | 0-600 | 10"-0 | VAC 10-0 |
| J | 0-800 | 16"-0 | VAC 16-0 |
| K | 0-1000 | 25"-0 | VAC 25-0 |
| L | 0-1500 | 40"-0 | VAC 40-0 |
| M | 0-2000 | 60"-0 | VAC 60-0 |
| N | 0-3000 | 100"-0 | VAC 100-0 |
| 4K | 0-4000 | 160"-0 | VAC 160-0 |
| O | 0-5000 | 200"-0 | VAC 200-0 |
| 6K | 0-6000 | 250"-0 | VAC 250-0 |
| P | 0-10,000 | ||
| Q | 0-15,000 | ||
| R | 0-20,000 | ||
| 25K | 0-25,000 | ||
| 30K | 0-30,000 | ||
| 35K | 0-35,000 | ||
| 40K | 0-40,000 | ||
| 50K | 0-50,000 | ||
| 60K | 0-60,000 | ||
| S | VAC 30" HG-0 | VACUUM | |
| T | REC 3-15 | RECEIVER | |
| U | 30" HG TO 15 PSI | COMPOUND | |
| V | 30" HG TO 30 PSI | COMPOUND | |
| W | 30" HG TO 60 PSI | COMPOUND | |
| X | 30" HG TO 100 PSI | COMPOUND | |
| Y | 30" HG TO 160 PSI | COMPOUND | |
| 2K | 30" HG TO 200 PSI | COMPOUND | |
| Z | 30" HG TO 300 PSI | COMPOUND |