| Body | SS304 / SS316 |
| Size Range | 1/2″ to 4″ |
| Pressure Adjusting | 1-6 kg/cm2 |
| Range | 4-12 kg/cm2 |
| Temperature | 85° C |
There are also by-pass valves which are required to operate when a pump stops due to a power failure or normal trip, anticipating the eventual return flow, and then being required to be closed to prevent the excessive waste of the return flow.