Guangdong Air Giant Fire Equipment Co.,Ltd.
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FM200 System Liquid Flow Check Valve Prevent Backflow Of Fire Extinguishing Agent
It is installed between the fire-fighting circulation pipe connecting pipe and the collecting pipe to prevent the fire extinguishing agent from flowing back from the collecting pipe to the storage device.
Parameter
| Model No. | QYD40/5.3 |
| Nominal diameter | Ф40mm |
| Nominal working pressure | 5.3Mpa |
| Equivalent length | 2.63m |
| Opening pressure | ≤0.4MPa |
| Inlet thread | M52*2mm |
| Connecting thread | M58*1.5mm |
| Weight | 2.5kg |
Components
It is composed of a valve body, a valve core, a valve seat, etc., and the valve body is made of a copper alloy.
Installation instructions
After installation, carefully check each other to ensure a tight connection with the connecting pipe and the seat. When installing, the check valve has a " " mark on it, indicating the direction of gas flow. It must not be reversed during installation. Please note that the direction of the airflow is consistent with the direction of the arrow!
Maintenance instructions
Visual inspection should be carried out every month, no collision deformation and mechanical damage, no corrosion on the surface can continue to be used.