ZSJL Hydraulic Alarm Bell

Product Brand: Jindun/Shanghai Jindun
Product Model: ZSJL Water Motor Gong

Product Introduction:
1. Description

It is an all-weather audible alarm device driven by water power, with no striking sparks during operation, making it suitable for explosion-proof locations. Product standard: GB5135·2-2003 "Automatic Sprinkler Systems Part 2: Wet Alarm Valves, Retard Chambers, and Water Motor Gongs".
2. Features

2.1. The water motor gong consists of an aluminum alloy body, nylon impeller, nylon shaft, aluminum alloy gong shell, copper alloy bushing, and nylon liner. It requires no maintenance and has a long service life.
2.2. The ZSJL wall-mounted water motor gong integrates the water motor and the gong into one unit, featuring a compact structure.
2.3. The ZSJLC through-wall water motor gong is suitable for aesthetically demanding decorations and frost-proof locations in northern regions, especially in industrial and mining protection areas. Its water motor is installed indoors in heated areas, while the gong is installed outdoors.
3. Main Performance Parameters:

3.1. Activation alarm pressure of the water motor gong: less than 0.05 MPa; rated working pressure: 1.2 MPa.
3.2. Flow coefficient K of the water motor gong: 5.4.
3.3. Alarm sound level of the water motor gong: at 0.05 MPa, greater than 70 dB; at 0.2 MPa, greater than 85 dB.
4. Others

4.1. The water motor gong should be installed in areas frequently accessed by personnel for easy audibility. Ensure horizontal water inlet with a 3/4 inlet connection; vertical downward drainage with an R1" drainage connection to the sewer must be unobstructed.
4.2. When fixing the through-wall gong water motor and the gong, align the transmission shaft to ensure no jamming during operation.
4.3. The inlet pipe for the water motor gong should be no less than DN20, and the length should not exceed 20 m. The height from the gong to the alarm valve should not exceed 5 m.
4.5. A filter should be installed at the water inlet of the water motor gong and cleaned every six months.