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Overview
The stable type energy and flow rate of SNW and SNZW indoor fire hydrant should conform to the regulation in the table, and the pressure oscillation phenomenon should not appear in the process of the test. Before the product leaves the factory, the pressure after the bolt should be adjusted to the specified value in the form.
Technical parameters
| Category | P/MPa Intake pressure class P | P/MPa Outlet pressute classP | Q/（L/s）Flow Q |
| Ⅰ | 0.4-0.8 | 0.25-0.35 | 0≥5.0 |
| Ⅱ | 0.4-1.2 | ||
| Ⅲ | 0.4-1.6 |
Basic parameters
| Model | inside nominaldiameter（mm） | Nominal pressure（MPA） | water intake | open height1≥ | |
| Type | caliber | 16.7 | |||
| SN50 | 50 | 1.6 | G2＂ | 50 | 21.7 |
| SN65 | 65 | G2 1/2＂ | 65 | 21.7 | |
| SNSS65 | 80 | G3＂ | 65 | ||
| SNSSW65-1 | 80 | G3＂ | 80 | ||
