Product Overview

The highly corrosion-resistant alarm check valve is a specialized fire protection valve designed for wet-pipe automatic sprinkler systems. Constructed from high-strength ductile iron, it offers exceptional corrosion resistance and a long service life in demanding fire protection environments. It is an ideal choice for commercial buildings, industrial facilities, high-rise apartments, warehouses, and other locations requiring reliable fire alarm capabilities and flow control.

UL/FM/CE certified alarm check

Technical Specifications

Working Principle

The alarm check valve operates on a simple yet reliable pressure differential principle:

1. Standby State (System Pressurized): The system side of the valve is filled with pressurized water. The clapper remains closed due to its own weight and the pressure balance between the supply side and system side.

2. Fire Event (Sprinkler Activation): When a fire occurs and the sprinkler head opens, water pressure on the system side drops. The pressure differential opens the clapper, allowing water to flow from the supply side into the system piping.

3. Alarm Activation: Simultaneously, water enters the alarm port through a small orifice, flowing to the water motor gong (audible alarm) and pressure switch (electrical signal to the fire control panel). The bypass check valve prevents false alarms from pressure surges.

UL/FM/CE certified alarm check

Key Features

1. High-Strength Ductile Iron Construction
2. Integrated Alarm Activation – Dual Alarm Output
3. UL, FM & CE Certified – Global Compliance
4. Fusion-Bonded Epoxy Coating – Superior Corrosion Resistance
5. Bypass Check Valve – False Alarm Prevention
6. Wide Media Compatibility
7. Flanged Connection – EN 1902-2 PN10/PN16

Εφαρμογές

1. Automatic Fire Sprinkler Systems
2. Fire Pump Discharge Lines
3. Industrial Fire Protection
4. High-Rise Building Risers
5. Municipal Fire Protection Networks

UL/FM/CE certified alarm check

Συσκευασία και αποστολή

Packing depends on the product type and quantity. Standard packing includes wooden cases with proper protection for flange faces and trim components. Shipment can be arranged by sea, σιδηροδρομικός, αέρας, or as per customer’s request.

Όροι πληρωμής

T/T, L/C εν όψει, Western Union & PayPal, και τα λοιπά.

Εταιρικό Προφίλ

LUOYANG DATANG ENERGY TECH CO., LTD is a professional industrial valve supplier, dedicated to providing reliable flow control solutions for fire protection, HVAC, επεξεργασία νερού, and industrial piping systems worldwide. All products are manufactured to international standards with UL/FM, CE, και ISO 9001 certifications. With over 10 years of experience, a modern facility of 80,000 m², και 200+ professional employees, we serve customers in 10+ countries with quality products, competitive pricing, and reliable delivery.

UL/FM/CE certified alarm check

FAQ

Q1: What is the difference between an alarm check valve and a standard check valve?

ΕΝΑ: An alarm check valve is a specialized type of check valve; in addition to preventing backflow (like a standard check valve), it triggers an audible and visual alarm when water flows through the system. Standard check valves only prevent backflow and lack alarm functionality. Alarm check valves are primarily used in fire protection systems that require flow monitoring and alarm notification capabilities.

Ε2: Which certification standards does this valve meet?

ΕΝΑ: This valve holds UL Listing (UL 312), FM Approval (FM 1630), and CE certification, meeting the strictest international safety and quality standards for fire protection equipment. These certifications ensure the product can be used in compliance with regulations for fire protection projects worldwide.

Ε3: What is the function of the bypass check valve?

ΕΝΑ: The bypass check valve allows for slow, minor, and transient increases in supply pressure to pass through, thereby preventing false alarms caused by pressure fluctuations. It ensures that the alarm is triggered only when sprinkler heads actually activate and a sustained water flow occurs.

UL/FM/CE certified alarm check