Automatic Drip Valve（AD-1）

Automatic Drip Valve(AD-1) is a self-actuating (typically gravity- or pressure-driven) small valve in fire water supply systems, primarily installed in wet alarm valve assemblies, sprinkler system drain lines, or pre-action systems. Its core function is to automatically discharge trace accumulated moisture within the system (such as condensation, minor leaks, or residual moisture), preventing long-term water accumulation from causing pipe corrosion, freezing in cold climates, or false activation of alarm devices (e.g., false alarms triggered by water buildup in the alarm piping of wet alarm valve assemblies).

● Model：AD - 1
● Type：Self - driven miniature drainage auxiliary valve
● Working Pressure Range：0.10~1.60MPa
● Drainage Flow Rate：0.5~2.0L/h
● Drainage Threshold Adjustment Range：0.01~0.05MPa
● Applicable Temperature Range：Brass type: - 20℃~+80℃;
● Stainless steel type: - 40℃~+120℃
● OEM Service：Accepted
● Delivery Terms：FOB, CFR, CIF, EXW
● Payment Mode：T/T, L/C, PayPal, Western Union

Product category:

UL/FM Alarm Check Valve

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Product Details

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Product Formation

Automatic Drip Valve (AD-1) is a self-actuating micro-drainage auxiliary component specifically designed for fire water supply systems, serving as a critical end-device in closed fire protection systems such as wet alarm valve assemblies, pre-action systems, and dry-pipe systems.

Its core function is to automatically and continuously discharge trace accumulated moisture within the system—including condensation, minor leaks, residual humidity, or pipe condensate—thereby preventing risks caused by long-term water buildup.

Through innovative self-actuating drainage mechanisms, high-precision sealing, and weather-resistant design, AD-1 has become an “invisible yet critical”reliability assurance component for fire water systems. Its maintenance-free and highly adaptable features deliver a low-cost, high-efficiency solution for managing water accumulation in long-running fire systems (e.g., in high-rise buildings, data centers, or industrial facilities)—making it an indispensable auxiliary device in modern fire protection engineering.

KEY WORDS： Tyco AD-1 Automatic Drain Valve，Model AD-1 Automatic Drain Valve，Fire Protection Automatic Drain Valve ，China, manufacturers, suppliers, wholesale, factory.

Other Classifed Products：

Fire Hose Categories, Fire Sprinkler System, Fire Protection Valve , Fire Hose Reel&Cabinet , Fire Foam Equipment，Fire Nozzle and Fire Monitor , Fire Hydrant , UL/FM Fire Fighting Equipment , Brass Valve Categories , Fire Extinguisher Series .

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Product Features

Adopts a gravity-micropressure synergistic drive mechanism: The valve disc opens naturally via trace water pressure differentials or gravity within the system, then resets to seal via a spring after draining. It requires no electricity, compressed air, or manual intervention—ideal for power-free, remote, or power-outage scenarios, ensuring the fire system can autonomously drain water even under extreme conditions to eliminate accumulation risks.
Dual-sealing structure with precision-machined valve seats: Ensures long-term dryness of alarm piping. Critical for wet systems, it completely prevents false activation of pressure switches or alarm bells caused by water buildup.
Built-in filtration device for clog-resistance & low maintenance: Reduces total lifecycle maintenance costs significantly and performs reliably in fire systems with poor water quality.
Adjustable drainage threshold for diverse systems: Flexibly adapts to varying pressure/flow rates in fire water supply systems, avoiding both over-drainage (wasting system water) and under-drainage (failing to prevent accumulation).
Compact modular design for space-saving & easy installation: Installable on the side of alarm valve assemblies, at pipe low points, or inside equipment cabinets—occupies minimal space and offers strong compatibility with mainstream fire protection equipment.

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Product Parameter

Project	Description
Model	AD - 1
Type	Self - driven miniature drainage auxiliary valve
Working Pressure Range	0.10~1.60MPa (static seal test pressure: 2.5MPa, no leakage after holding pressure for 5min)
Drainage Flow Rate	0.5~2.0L/h (automatically adjusted according to system pressure fluctuations, maintaining trace continuous drainage)
Drainage Threshold Adjustment Range	0.01~0.05MPa (adjust the opening pressure of the valve disc through the built - in adjustment screw to adapt to different system pressure scenarios)
Applicable Temperature Range	Brass type: - 20℃~+80℃; Stainless steel type: - 40℃~+120℃
Main Material	Standard type: H59 environmentally friendly brass (lead content ≤0.25%, compliant with EN 1254 - 1);
Main Material	Corrosion - resistant type: 304 stainless steel
Connection Method	Standard: Rc1/4″ British taper pipe thread (BSPT), optional NPT1/4″ American pipe thread (UNF)

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FAQ

Q: Can you accept sample order?

A: Yes, we accept samples with little and reasonable charge.But need customer pay sample fees and transport fees first.

Q: What is your payment terms?
A: Payment supports T/T, L/C, etc.

Q: How can l get my order?
A: We will send you the goods by UPS,DHL,FedEx,Oversea Shipment or other forwarder, all with tracking number.

Q: Why choose us?
A： With over 15 years of experience in the fire protection industry, our company has professional technical personnel and many well-known partners in the domestic market. We offer favorable prices and guarantee quality, having passed multiple certifications!

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With more than 15 years of experience serving clients, we have developed extensive expertise and in-depth industry knowledge, enabling us to deliver reliable and effective solutions tailored to your requirements.
We provide professional technical support and customized service offerings. Our committed technical team is available to assist you with product consultation, installation guidance, and comprehensive after-sales support whenever necessary.
At Sheng Feng Fire, our professionals are dedicated to helping you select the most suitable products based on your specific needs.
Please do not hesitate to contact us for further information！