Product Overview

The UL/FM Fire 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 Fire Alarm Check Valve

IiNgcaciso zobuGcisa

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 Fire Alarm Check Valve

Ezona mpawu

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

Usetyenziso

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 Fire Alarm Check Valve

Ukupakisha kunye noThumelo

Ukupakisha kuxhomekeke kuhlobo lwemveliso kunye nobuninzi. Standard packing includes wooden cases with proper protection for flange faces and trim components. Ukuthunyelwa kunokulungiswa ngolwandle, kaloliwe, umoya, okanye ngokwesicelo somthengi.

Immimiselo yokuhlawula

T/T, L/C emehlweni, uwestern Union & PayPal, njl.

Iprofayile yekhampani

ULUOYANG WEZA ENERGY TECH CO., LTD is a professional industrial valve supplier, dedicated to providing reliable flow control solutions for fire protection, HVAC, water treatment, and industrial piping systems worldwide. All products are manufactured to international standards with UL/FM, CE, kunye ne-ISO 9001 iziqinisekiso. Ngokungaphezulu 10 iminyaka yamava, indawo yangoku ye 80,000 m², kwaye 200+ abasebenzi abaqeqeshiweyo, sisebenzela abathengi kwi 10+ amazwe aneemveliso ezisemgangathweni, amaxabiso okhuphiswano, kunye nokuhanjiswa okuthembekileyo.

UL/FM Fire Alarm Check Valve

FAQ

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

A: 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.

Q2: Which certification standards does this valve meet?

A: 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.

Q3: What is the function of the bypass check valve?

A: 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 Fire Alarm Check Valve