Outlet valve and lock valve of circulating pump
key word：Heat exchange element
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Product description
Outlet valve and lock valve of circulating pump
1. Introduction
The outlet valve of the circulating pump is installed at the outlet of the circulating pump of the boiler, and has the function of stop valve and check valve, which can not only close, but also prevent the medium from backflow; the locking valve is installed on the water spray pipe of the superheater and reheater of the steel furnace, and is used as a quick opening and closing device.
2. Main technical parameters (see table 51-1)
Table 51-1 main technical parameters of outlet valve and lock valve of circulating pump
| Item | Outlet valve | Lock valve |
| Nominal (working) pressure range（MPa） | PN32 | PN20～PN32 |
| Operating temperature range（℃） | ≤427（≤800.6℉) | ≤427 (≤800℉) |
| Nominal size range (mm) | DN250×225～DN300×250 | DN32～DN100(5/4～4in) |
| Connection mode | Welding | Welding |
| Valve body material | SA10、25、WCB | |
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