| Model | 90 | 91 | 92 | 93 | 94 |
| Connection Type | Multiple | Multiple | Multiple | Multiple | Multiple |
| Maximum Allowable Pressure | 60 psig (4 bar) |
316 psig (22 bar) |
486 psig (33 bar) |
1366 psig (94 bar) |
4020 psig (277 bar) |
| Body Material | Cast Iron | Cast Iron | Cast Iron | Cast Iron | Cast Iron |
| Inlet Connection Size | 1/2″ NPT (15 mm) |
1/2″ NPT (15 mm) |
3/4″ NPT (20 mm) |
1-1/4″ NPT (32 mm) |
2″ NPT (50 mm) |
| Drain Connection Size | 1″ NPT (25 mm) |
1″ NPT (25 mm) |
1″ NPT (25 mm) |
1-1/4″ NPT (32 mm) |
2″ NPT (50 mm) |
| Trap Connection Size | 1/2″ NPT (15 mm) |
3/4″ NPT (20 mm) |
3/4″ NPT (20 mm) |
3/4″ NPT (20 mm) |
3/4″ NPT (20 mm) |
The 9000 Series humidifiers for air handling systems are manufactured to meet the needs of central station or booster humidification. Lightweight and compact the 9000 Series offers simplified installation in tight quarters, easier maintenance and less weight for piping to support.
Operation and control may be pneumatic or electric.