Electromagnetic relief device
key word：Heat exchange element
Category:
Product description
Electromagnetic relief device
1. Introduction
The electromagnetic relief device is a protection device to prevent the steam pressure in the boiler from exceeding the specified value. It can be opened before the safety valve acts to eliminate the excess steam, so as to ensure that the boiler operates under the specified pressure. At the same time, it can reduce the number of safety valve actions and prolong the service life of the safety valve.
2. Main technical parameters (see table 56-1)
Table 56-1 main technical parameters of electromagnetic relief device
| Item | Parameter |
| Nominal (working) pressure range（MPa） | Cass1500~Class4750 |
| Operating temperature range（℃） | ≤610（≤1130℉) |
| Nominal size range (mm) | DN50~DN75(2~3in) |
| Connection mode | Flang or welding |
| Valve body material | WCB, WCC, C12A, WC9, WC6, ZG20CrMoV, CF8, 25, SA105, 12Cr1Mo1V, F91, F22, F304, F316, F21 |
