I. Key Performance Features

1. Anti-freezing: The fire hydrant is equipped with an automatic drainage device. This device can automatically seal and drain water based on the water pressure inside the hydrant. When the hydrant is opened, the drainage valve automatically closes if the water pressure is not less than 0.1 MPa; after the hydrant is closed, the drainage device automatically opens to discharge excess water.

2. Collision Prevention: The fire hydrant is equipped with collision-resistant components structurally, and also features a spring-closed drain outlet for positive pressure sealing. Upon impact, the hydrant's valve head closes immediately under pipeline pressure, ensuring no leakage of water within the pipeline and not affecting the normal operation of other hydrants on the same pipeline. If the collision-resistant components break, the hydrant body and valve body remain undamaged. The hydrant can be repaired under pressure after being broken by impact.

Section 3: Main Structural Parameters

Figure 4: Outdoor Ground Fire Hydrant Installation Diagram

V. Selection

1. Based on the design requirements and specifications of the fire protection project, determine the depth of the frozen soil layer according to the usage environment and region, and confirm the total height dimensions of the ground fire hydrants based on the installation diagram.

2. When selecting the fire hydrant design, it is crucial to fully consider the position and height of the groundwater. It must be ensured that the position of the drain valve during installation is above the groundwater level by at least 100mm; otherwise, the fire hydrant may not operate properly. !!!

3. Install using either branch pipe or main pipe method as needed, with the connection size remaining unchanged.