Spring type safety valve
key word：Heat exchange element
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Product description
Spring type safety valve
1. Introduction
It is used on the pipeline or pressure vessel of steam, air, water and other medium of power plant boiler as overpressure protection device to prevent its pressure from exceeding the allowable pressure value.
2. See table 47-1 for main technical parameters
Table 47-1 main technical parameters of spring type safety valve
| Item | Parameter |
| Nominal (working) pressure range（MPa） | PN1.6～PN10 (Class150) |
| Operating temperature range（℃） | 427～610 (800～1130℉) |
| Nominal size range (mm) | DN50～DN250(2～10in) |
| Connection mode | Flange or welding |
| Operation mode | Without any external force, use the force of the medium itself to overcome the load of the spring under the set pressure, quickly make the disc rise, instantly reach the full stroke, and discharge a rated amount of fluid, so as to prevent the pressure from exceeding the rated value; when the pressure returns to normal, the valve automatically closes and prevents the medium from flowing out |
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