HOW is a part-turn gear operator for manual operation of ball, plug and butterfly valves. Its low lead angle gearing is inherently self-locking, and ratios are chosen to meet manual rim effort requirements.
| Torque Range | 39,000 to 264,000 Nm (28,765 to 194,716 lbf.ft) |
| Ratios | 1229:1 to 7171:1 |
| Gearcase | Ductile iron gearcase |
| Input Shaft | Protected steel input shaft |
| Options | High and low temperatures, stainless steel input shaft, all types of environment, limit switches, chain wheels, fixed and flexible extensions |