Saddle Mounted Water Flow Indicator
1. Standard: Complies with GB5135.7-2018 for water flow indicators in automatic sprinkler systems.
2. Saddle-Type Design: Installs directly onto a pipe opening without cutting or welding.
3. Rubber Sensing Component: Curved blade design provides sensitive and reliable water flow detection.
4. Wide Size Range: 7 models cover DN50–DN200 pipes with Φ42/Φ50 openings.
5. Performance: Rated pressure 1.6 MPa, test pressure 3.2 MPa, sensitivity 15–37.5 L/min; DC24V 1A / AC220V 0.5A signal output.
Description
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Products Description
Saddle-Type Water Flow Indicator
Converts the water flow signal in an automatic sprinkler system into an electrical alarm signal - clamped straight onto the pipe, no cutting or re-joining required.
Rated pressure 1.6 MPa
Sensitivity 15–37.5 L/min
DN 50–200
GB5135.7-2018
Overview
The ZSJZ saddle-type water flow indicator is an alarm device used inside automatic sprinkler fire suppression systems. When water begins to flow through the protected pipe, the sensing paddle is pushed by the current, trips an internal micro-switch, and sends an electrical alarm signal to the fire control panel.
It is built to GB5135.7-2018 (Automatic Sprinkler Fire Extinguishing Systems - Part 7: Water Flow Indicator) and suits medium- and light-hazard buildings: hotels, shopping malls, restaurants and entertainment venues, hospitals, office buildings, factories and warehouses.
Connection
Saddle-type - clamps directly onto the pipe through a single opening, no cutting or re-welding of the pipeline.
Sensing element
Rubber sensing component that flexes to match the pipe's inner curve for stable, repeatable detection.
PRODUCT STANDARD
GB5135.7-2018
Automatic Sprinkler Fire Extinguishing Systems - Part 7: Water Flow Indicator
How it works
Paddle inserted into the pipe
The rubber sensing paddle is fitted through the saddle body and curved to match the pipe's inner wall.
Flow bends the paddle
Water moving through the pipe pushes the paddle once flow exceeds the rated sensitivity of 15 L/min.
Alarm signal is sent
The micro-switch trips and outputs a DC24V 1A / AC220V 0.5A signal to the fire alarm panel.
Technical specifications
| Product standard | GB5135.7-2018 |
|---|---|
| Connection type | Saddle-type clamp |
| Sensing element | Rubber sensing component |
| Rated working pressure | 1.6 MPa |
| Hydrostatic test pressure | 3.2 MPa |
| Sensitivity (flow rate) | 15–37.5 L/min |
| Electrical rating | DC24V 1A / AC220V 0.5A |
Sizes & dimensions
| Model | L (mm) | Pipe opening (mm) |
|---|---|---|
| ZSJZ 50-M-1.6 | 94 | Ø42 |
| ZSJZ 65-M-1.6 | 94 | Ø42 |
| ZSJZ 80-M-1.6 | 105 | Ø42 |
| ZSJZ 100-M-1.6 | 135 | Ø50 |
| ZSJZ 125-M-1.6 | 162 | Ø50 |
| ZSJZ 150-M-1.6 | 188 | Ø50 |
| ZSJZ 200-M-1.6 | 239 | Ø50 |
Why choose the ZSJZ series
Q: Standard-compliant alarm signal device
A: Manufactured to GB5135.7-2018 for automatic sprinkler fire suppression systems.
Q: Saddle-type, cut-free installation
A: Clamps onto the pipe through a single opening - no cutting or re-welding of the pipeline.
Q: Rubber paddle sensor
A: Flexes to match the pipe's curve for stable, repeatable flow detection.
Q: Full DN50–DN200 size range
A: Seven models cover Ø42 and Ø50 pipe openings across the ZSJZ 50 to 200-M-1.6 series.
Q: 1.6 MPa rated, 3.2 MPa tested
A: Rated working pressure of 1.6 MPa with a 3.2 MPa hydrostatic test pressure for reliable long-term service.
Our address
NO.8, YUANFENG ROAD, MEIYUAN VILLAGE, KANGMEI TOWN, NANAN CITY, QUANZHOU CITY, FUJIAN CHINA
Hot Tags: saddle mounted water flow indicator, China saddle mounted water flow indicator manufacturers, suppliers, factory, Chrome Fire Sprinkler Escutcheon Plate, Single Flat Escutcheon Plate
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