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CA-FIRE Dry Alarm Valve Accelerator Product Introduction

For Fire Protection Dry Alarm Valve Accelerator (Matching Differential Dry Alarm Valves)

0. Company Introduction

CA-FIRE Fire Protection Co., LTD, founded in 2012 and located in Quanzhou, China, specializes in the R&D, manufacturing, and supply of high-quality firefighting system components. Our product portfolio covers FM-certified fire sprinklers, alarm valves (wet/dry/deluge/explosion-proof), fire hydrants, foam systems, CCC/CE-certified nozzles, and fire protection accessories (accelerators, water flow indicators). We adhere to strict international fire safety standards and enterprise quality norms, delivering reliable system-aided solutions for industrial, commercial, and municipal fire protection systems worldwide.

CA-FIRE's product range caters to diverse fire protection needs, including Fire Sprinklers & Accessories; Alarm Valves & Matching Components; Dry/Wet Fire Hydrants; Foam Extinguishing Systems; Fire Nozzles & Water Monitors; and Pipeline Control Accessories. All products undergo rigorous factory testing to ensure seamless integration with fire protection systems and compliance with project acceptance requirements.

1. Product Overview & Core Advantages

1.1 Product Overview

The CA-FIRE Dry Alarm Valve Accelerator is a critical auxiliary component for differential dry alarm valve systems, designed to enhance the response speed of dry alarm valves during fire emergencies. Its core function is to quickly balance or release pressure in the intermediate chamber of the dry alarm valve, enabling the valve disc to open rapidly when a fire triggers pipeline pressure changes.

Composed of key components including an upper wall, check valve, diaphragm gasket, driving lever, exhaust ports, return spring, and a normally closed ball valve, the accelerator operates based on pressure balance principles. It connects to the intermediate chamber of the dry alarm valve and communicates with the atmosphere via exhaust ports, working in tandem with the dry alarm valve's 5:1 theoretical differential ratio (air pressure only needs 1/5 of water pressure to maintain balance). When a fire breaks out and pipeline pressure drops, the accelerator quickly discharges compressed air to disrupt pressure balance, prompting the dry alarm valve to open immediately for water supply.

1.2 Core Advantages

Rapid System Activation: Breaks pressure balance in the dry alarm valve's intermediate chamber quickly, significantly reducing the valve's response time-critical for early fire suppression.

Flexible Piping Layout: Three interconnected exhaust ports allow convenient and flexible piping connections, adapting to diverse system installation layouts.

Easy Reset & Drainage: Equipped with a normally closed ball valve for quick accelerator reset and post-operation water drainage, simplifying system maintenance.

Safe Pressure Balance: Matches the dry alarm valve's 5:1 theoretical differential ratio, ensuring stable servo operation (upper chamber air pressure is typically 1/3 of inlet water pressure for safety).

Robust Structural Design: High-quality diaphragm gasket and return spring ensure reliable sealing and repeated action performance, with long service life.

Seamless System Integration: Specifically designed for differential dry alarm valve systems, ensuring perfect compatibility and trouble-free operation.

2. Technical Specifications

Specification Category	Details
Product Name	Dry Alarm Valve Accelerator
Core Components	Upper wall, check valve, diaphragm gasket, driving lever, exhaust ports (3), return spring, normally closed ball valve
Key Design Features	3 interconnected exhaust ports; normally closed ball valve (reset/drainage function)
Matching Valve Type	Differential dry alarm valve
Theoretical Differential Ratio (Matching Valve)	5:1 (upper chamber air pressure = 1/5 inlet water pressure for balance)
Servo State Air Pressure	Typically 1/3 of inlet water pressure (ensures safety and stability)
Working Principle	Pressure balance disruption via compressed air discharge to trigger dry alarm valve opening
Connection Port	Connects to the intermediate chamber of the dry alarm valve; exhaust ports communicate with the atmosphere
Operating Temperature	-10℃~60℃ (suitable for most indoor/outdoor fire protection environments)
Certifications	CE, Compliant with fire protection system component standards

3. Installation, Operation & Maintenance Guidelines

3.1 Installation Requirements

Piping Connection: Connect the accelerator to the intermediate chamber of the differential dry alarm valve; ensure the three exhaust ports are unobstructed and communicate with the atmosphere.

Valve Orientation: Install the accelerator in a vertical position to ensure the return spring and internal components operate under gravity normally.

Sealing Check: Verify that the diaphragm gasket and check valve have tight seals to prevent air leakage, which may affect pressure balance.

Ball Valve Position: Ensure the normally closed ball valve is closed during system operation; only open it for reset or drainage.

3.2 Operation Process

3.2.1 Servo State (Standby)

Compressed air is injected into the upper chamber of the dry alarm valve; the accelerator's internal components and check valve seal under pump output pressure.

Upper and lower chamber pressures balance, and internal components rest on the driving lever-system is in standby.

3.2.2 Start-Up (Fire Trigger)

When the pipeline connected to the lower chamber loses pressure (fire breaks out), upper and lower chamber pressures become unbalanced.

Upper chamber pressure presses down internal components, which push the driving lever and diaphragm gasket.

Compressed air is quickly discharged to the dry alarm valve's intermediate chamber, disrupting force balance and prompting the valve disc to open for water supply.

3.2.3 Reset & Drainage

After fire suppression, open the normally closed ball valve to reset the accelerator and drain residual water.

Close the ball valve once reset is complete, and re-inject compressed air to restore the system to servo state.

3.3 Maintenance Tips

Quarterly Inspection: Check for air leakage at connections and exhaust ports; verify the diaphragm gasket for aging or damage.

Semi-Annual Cleaning: Open the normally closed ball valve to drain accumulated water; clean internal components to remove scale or debris.

Spring & Seal Maintenance: Inspect the return spring for deformation or corrosion; replace aging diaphragm gaskets and check valve seals promptly.

Pressure Calibration: Regularly verify the upper chamber air pressure (1/3 of inlet water pressure) to ensure safe and stable servo operation.

System Test: Conduct annual fire simulation tests to confirm the accelerator and dry alarm valve work in tandem effectively.

4. Packaging & Transportation

Packaging: Each accelerator is wrapped in PE film and foam padding to protect internal components and sealing surfaces. Accessories (connection gaskets) are packed in a separate bag. Multiple units are loaded into export-grade wooden crates for sea/air freight.

Transportation: Avoid stacking heavy loads on crates; protect from rain, impact, and mechanical damage during transit. Do not disassemble internal components or strike the exhaust ports.

Storage: Store in a ventilated, dry warehouse (-10℃~40℃); avoid storing with corrosive substances. Keep the normally closed ball valve closed during storage to prevent debris entry.

5. Application Scenarios

Dry Fire Protection Systems: Matches differential dry alarm valves in dry sprinkler systems-ideal for cold regions where water freezing is a concern.

Industrial Facilities: Factories, warehouses, petrochemical plants, and power stations with dry fire protection requirements.

Commercial & Public Buildings: Shopping malls, office complexes, airports, and railway stations (dry systems in unheated areas).

Municipal Infrastructure: Subway stations, underground passages, and large parking garages (dry fire suppression systems).

6. Frequently Asked Questions (FAQ)

Q: What is the core function of this accelerator?A: It enhances the response speed of differential dry alarm valves by quickly disrupting pressure balance in the valve's intermediate chamber, ensuring the valve opens immediately when a fire occurs.

Q: What is the theoretical differential ratio of the matching dry alarm valve?A: The theoretical differential ratio is 5:1-meaning the upper chamber air pressure only needs to be 1/5 of the inlet water pressure to maintain system balance.

Q: How to reset the accelerator after use?A: Open the normally closed ball valve to reset the accelerator and drain residual water; close the ball valve and re-inject compressed air to restore standby state.

Q: Why are there three exhaust ports?A: The three interconnected exhaust ports allow flexible piping connections, adapting to different system installation layouts and ensuring smooth air discharge.

Q: What is the recommended air pressure in the servo state?A: To ensure safety and stability, the upper chamber air pressure is typically set to 1/3 of the inlet water pressure (higher than the 1/5 balance threshold).

7. Product Comparison (vs. Competitors)

Key Comparison Points	CA-FIRE Dry Alarm Valve Accelerator	Competitor A	Competitor B
Matching Compatibility	Specifically designed for 5:1 differential dry alarm valves	Universal (poor matching)	Limited to specific valve models
Response Speed	Fast (immediate pressure disruption)	Medium (delayed discharge)	Slow (prone to air retention)
Piping Flexibility	3 interconnected exhaust ports	1 exhaust port	2 non-interconnected ports
Reset Function	Built-in normally closed ball valve (one-step reset)	Manual disassembly required	External reset valve (extra cost)
Seal Reliability	High-quality diaphragm gasket	Ordinary rubber gasket	Low-grade sealing material
Service Life	8~10 Years	4~5 Years	3~4 Years
After-Sales Warranty	2 Years	1 Year	No Warranty

8. Contact: Dulcia

Email: sales8@ca-fire.com

Tel/WhatsApp: +86 191 6381 1547

WeChat: Dulcia8

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