Blowdown valve
key word：Heat exchange element
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Product description
Blowdown valve
1. Introduction
The blowdown valve and the electric blowdown valve are installed in the lower header of the water wall and the centralized downcomer of the power plant boiler, and are used as the blowdown device of the boiler.
2. Main technical parameters (see table 55-1)
Table 55-1 main technical parameters of blowdown valve
| Item | Parameter |
| Nominal (working) pressure range（MPa） | PN20~PN32(Cass300~Classt500) |
| Operating temperature range（℃） | 200~610(392~1130℉) |
| Nominal size range (mm) | DN20~DN50(3/4~2in) |
| Connection mode | Flang or welding |
| Valve body material | WCB, WCC, C12A, WC9, WC6, ZG20CrMoV, CF8, 25, SA105, 12Cr1Mo1V, F91, F22, F304, F316, F21 |
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