Alarm Check Valve For Wet Pipe System 3 Inch
A wet alarm check valve is a crucial component in a wet pipe fire sprinkler system, designed to control water flow and activate an alarm when a fire is detected.
It prevents water from flowing back into the main water supply line, which helps to avoid contamination and ensures that the system maintains adequate pressure for effective fire suppression.
Fujian Haijing Fire Fighting Equipment Co., Ltd. is one of the leading manufacturers and suppliers of alarm check valve for wet pipe system 3 inch in China, also supports customized service. Please feel free to wholesale cheap alarm check valve for wet pipe system 3 inch from our factory.
Products Description of Alarm Check Valve for Wet Pipe System 3 Inch
|
Alarm Check Valve (Wet Type) Basic Technical Info |
||||||
|
Model |
ZSFZ80 |
ZSFZ100 |
ZSFZ125 |
ZSFZ150 |
ZSFZ200 |
ZSFZ250 |
|
Inside nominal diameter(mm) |
80 |
100 |
125 |
150 |
200 |
250 |
|
Rated working pressure (MPa) |
1.6Mpa |
|||||
|
Sealed test (MPa) |
3.2Mpa |
|||||
|
Strength test (MPa) |
6.4Mpa |
|||||
|
Alarm flow (L/min) |
15<Q<60 |
|||||
|
Retard alarm time(s) |
5~90 |
|||||
|
Friction Resistance(MPa) |
≤0.035 |
|||||
|
"Height of alarm valve(mm) |
250 |
260 |
265 |
270 |
370 |
430 |
|
"Outside diameter of flange (mm)" |
200 |
220 |
250 |
285 |
340 |
405 |
|
"Outside diameter of flange screw hole (mm)" |
160 |
180 |
210 |
240 |
295 |
355 |
|
"Diameter of screw hole (mm) |
8 |
12 |
||||
|
Quantity of screw hole |
8 |
22 |
26 |
|||
Packing of Alarm Check Valve for Wet Pipe System 3 Inch
Differences Between Wet and Dry Alarm Valves
1. Operating Principle
Wet Alarm Valve: In the ready state, the pipes are filled with pressurized water. When a fire occurs, the closed sprinkler heads open due to heat, allowing water to flow through the alarm valve and activate the alarm.
Dry Alarm Valve: In the ready state, the pipes are filled with pressurized air or nitrogen. When a fire occurs, the closed sprinkler heads open, releasing the gas, which then allows water to enter the pipes and flow to the sprinklers.
2. Suitable Environments
Wet Alarm Valve: Suitable for environments with temperatures between 4°C and 70°C.
Dry Alarm Valve: Suitable for environments with temperatures below 4°C or above 70°C, such as cold regions or high-temperature areas.
Company Information
FAQ
Q: How does a wet alarm check valve prevent backflow?
A: A wet alarm check valve prevents backflow by using a spring-loaded clapper that remains closed until water pressure from the supply side exceeds a certain threshold. When water flows in the correct direction, the clapper lifts, allowing water to pass through. If water tries to flow backward, the clapper closes, blocking the flow.
Q: What is the role of the alarm in a wet alarm check valve?
A: The alarm in a wet alarm check valve is activated when water flows through the valve, typically due to a fire event. This alarm alerts building occupants and emergency services to the potential fire, ensuring a rapid response.
contact Information
<br />
Send us your enquiry, we will reply In 24 Hours!
<br />
WhatsApp/WeChat: +86 18359194029
E-mail: sales03@sanjingfire.com
Add: Maosheng RD., Fumao Economic Zone, Nan'an City, Fujian, China, 362300
<br />
Hot Tags: alarm check valve for wet pipe system 3 inch, China alarm check valve for wet pipe system 3 inch manufacturers, suppliers, factory, Fire Alarm Check Valve, Wet Alarm Valve, Groove Wet Alarm Valve, Alarm Check Valve, Valve and System, Sprinkler Alarm Check Valve
