Delayed water flow indicator (ZSJZYS-922)DN50-DN200

Product overview:

The saddle-type delayed water flow indicator is an important component of the wet automatic sprinkler system. It is mainly composed of the valve body, shell, sealing ring, air delay device, switch assembly, connecting plate, blade, etc.

The saddle-type water flow indicator is generally installed at the beginning of the fire main pipe in each zone of the system. It can convert the water flow signal into an output electrical signal and send it to the electric control box or fire control center to display the area where the nozzle sprays water to monitor the system. Alarm function.

When a fire occurs, the nozzle sprays water and the water flows in the pipe. The blades in the impact water flow indicator are deflected and tilted in the direction of the water flow. The air delay device is turned on. If the blades still do not return after the delay set time is reached, the micro movement is triggered. Switch, output electrical signal. When the water flow stops, the blades and push rods are reset and the electrical signal is eliminated. Delaying the alarm signal for a certain period of time is to avoid false alarms caused by instantaneous water pressure fluctuations during firefighting.

Product advantages:

①With adjustable delay function:Using knob type adjustment, the delay time is accurate, the time is adjustable from 0-90s, and the reliability is high;

②The air delay device is designed and equipped with micro bearings:Ensure the consistency and reliability of the delay time of each product every time the knob is adjusted.

③Adjustable spring design:Convenient sensitivity adjustment and factory maintenance;

④Double micro switch design:One end can be used for central control room operation, and the other end can be used to connect the alarm;

⑤ Streamlined shell design:Make reasonable use of the space layout of the delayer and design the outer shell appearance, which is novel and beautiful.

Parameter standards:

Design standards: GB 5135.7; UL 346; FM 1042; ULC-S548
Connection standard: saddle type
Coating standard: ANSI/AWWA C550
Nominal diameter: DN50-DN200
Nominal pressure: PN16/25
Applicable temperature: 0～80℃
Applicable medium: water
Applicable fields: fire protection field