Products Description
8-inch wet alarm valve
forede 8-Inch Wet Alarm Valve is a large-caliber (DN200) core component for high-flow wet pipe sprinkler systems, engineered to meet the water supply demands of large-scale fire protection scenarios. Constructed from high-strength ductile iron or 316 stainless steel, it features a reinforced spring-loaded clapper, dual high-precision pressure gauges, and an optimized hydraulic alarm interface. Under normal conditions, the clapper maintains system pressure and prevents backflow; when a fire activates sprinkler heads, the pressure drop opens the clapper, enabling high-flow water discharge (up to 150 m³/h) and simultaneous activation of on-site high-decibel alarms and remote fire control center signals. Key advantages include high-flow capacity for large-area protection, stable pressure control under maximum flow conditions, robust construction for harsh industrial environments, precise alarm linkage for efficient emergency response, and wide compatibility with large-diameter pipelines and sprinkler heads. Suitable for environments above 4°C, it is widely used in large industrial plants, large-scale warehouses/logistics centers, super commercial complexes, and high-rise buildings with extensive sprinkler networks.
Valve Type
Working Pressure
size
Warrnty
Specification
|
Model Number |
Size |
Flange Standard |
Installation |
Working Pressure |
|
ZSFZ 80 |
DN80(3'') |
BS4504 |
Vertical |
1.6 Mpa |
|
ZSFZ 100 |
DN100(4'') |
BS4504 |
Vertical |
1.6 Mpa |
|
ZSFZ 125 |
DN125(5'') |
BS4504 |
Vertical |
1.6 Mpa |
|
ZSFZ 150 |
DN150(6'') |
BS4504 |
Vertical |
1.6 Mpa |
|
ZSFZ 200 |
DN200(8'') |
BS4504 |
Vertical |
1.6 Mpa |
|
ZSFZ 250 |
DN250(10'') |
BS4504 |
Vertical |
1.6 Mpa |
Frequently Asked Question
Frequently Asked Questions
Q. What is a Wet Alarm Valve?
-
A: Wet Alarm Valve is the critical control unit in a wet pipe sprinkler system. It maintains water pressure in supply pipes while monitoring flow. When a sprinkler activates, it:
Releases water into distribution pipes.
Triggers alarms via mechanical & electrical signals.
Composition: Valve clapper, retard chamber, alarm port, and test drains.
Q. Advantages of Wet Alarm Valves
-
A: Instant Response: 3-5 second water release after sprinkler activation.
Ultra-Reliable: No electronics – operates on water pressure alone.
Low Maintenance: Annual inspection vs. quarterly checks for dry systems.
False Alarm Prevention: Retard chamber filters pressure surges.
Leak Detection: Test valves monitor seal integrity continuously.
Q. Why Choose Wet Alarm Valve Sprinkler System?
-
A: Life-Saving Speed: 50% faster water delivery than dry/pre-action systems.
Cost-Effective: 30% lower installation/maintenance costs.
Simplicity: No air compressors, priming delays, or complex controls.
Fail-Safe Operation: Functions during power outages.
Q. How the Valve Operates?
-
A: Standby: Water pressure holds clapper closed.
Activation: Sprinkler opens → pressure drop lifts clapper.
Flow: Water enters sprinkler pipes.
Alarm Sequence:
Water fills retard chamber (5-60 sec delay).
Activates water motor gong (mechanical bell).
Triggers pressure switch (electronic alarm).
Reset: Close main valve → drain → inspect → repressurize.
Q. Where we should use check alarm valve?
-
A:The check alarm valve is an essential component of any fire protection system. It is designed to provide reliable and efficient protection in critical applications, such as high-rise buildings, power plants, and industrial facilities. In short, we should use check alarm valves wherever there is a risk of fire and a need for an effective fire suppression system.
One of the main benefits of check alarm valves is their ability to control or stop the flow of water through the system at the right time. This is particularly important in a fire situation, where the last thing you want is for the water to continue flowing even when it's no longer needed. Check alarm valves help to ensure that water is delivered where and when it's needed, which can significantly reduce the damage caused by fire.
Another advantage of check alarm valves is their ability to provide early warning of system failure. If there is a problem with the fire suppression system, the check alarm valve will sound an alarm that alerts you to the issue. This means that you can address the problem before it gets out of hand, reducing the chances of a fire breaking out and causing damage to your property.
Check alarm valves are also useful in situations where there is a risk of freezing or overheating. They are designed to release water at a consistent rate, even in extreme temperatures, which helps to protect the system and prevent damage to the building.
In conclusion, check alarm valves are a critical component of any fire protection system. They help to ensure that water is delivered where and when it's needed, provide early warning of system failure, and protect against freezing or overheating. By using check alarm valves in the right applications, we can help to keep our buildings and facilities safe and prevent the spread of fire.
Recommend Product
FIRE SPRINKLER SYSTEM
Main Product
Our Main Product
Contact Information
Dear Customer,
Before ordering, please contact with our sales team to discuss order information, such as Model Number, Flow Rate, Material, Control Ways, Package,Etc.
If you have any other requirements or wanna know more info about our products, welcome to contact as well. Our Sales team and Technical Department are willing to support you.
Our address
Nan'an City, Quanzhou City Fujian PRC-China
Phone Number
Hot Tags: 8-inch wet alarm valve, China, manufacturers, suppliers, wholesale, price, Fire Signal Butterfly Valve, Groove Type Alarm Valve, Groove Type Alarm Check Valve, Grooved Wet Type Alarm Valve, Galvanized Type Alarm Check Valve, Grooved Wet Type Alarm Check Valve
