Anti-reset Device

Anti-reset Device for Fire Protection is mainly used in fire sprinkler systems such as deluge valve systems and pre-action alarm valve assemblies.
Material: Brass (corrosion-resistant, suitable for fire water medium).
Main Pipeline Ports: Common specifications include 1/2" male thread (top, 4-point caliber) and 3/4" male thread (bottom, 6-point caliber; specific to model).
Side Hose Ports: Compatible with φ6 - φ8mm hoses (for control pipeline connection).
Working Pressure: PN1.6 - PN2.5 MPa (meets fire system pressure requirements).
Working Temperature: -10℃ - 80℃ (suitable for normal temperature range of fire water).
Applicable Systems: Deluge valve systems, pre-action alarm valve assemblies, and other automatic sprinkler systems.
Core Features: Prevents accidental reset of valve discs to ensure system stability; threaded connection for easy installation; brass material for corrosion resistance and durability.

Product category:

Check Valve

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linhaifeng117@gmail.com

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Product Details

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Product Formation

Anti-reset Device for Fire Protection is mainly used in fire sprinkler systems such as deluge valve systems and pre-action alarm valve assemblies. Made of brass, it features upper and lower male threaded ports (for connecting to main pipelines) and two side hose ports (for control pipelines or signal transmission). Its core function is to prevent accidental reset of key components (like valve discs) after deluge valves or pre-action valves are triggered by fire, ensuring the fire protection system remains activated and avoiding failure of fire-extinguishing functions due to pressure fluctuations or misoperations. It is a crucial accessory for ensuring the reliability of fire protection systems.

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Product Features

Automatic anti-reset: After the system is triggered (e.g., deluge valve opening), it activates automatically to prevent key components like valve discs from resetting, ensuring continuous fire suppression.
Fault-resistant retention: Even in case of solenoid valve failure, power outage, or pressure fluctuation, it still keeps the system in the activated state to avoid false reset.
Structural & installation advantages: Most are built-in to simplify control piping; made of corrosion-resistant materials (e.g., brass) with threaded/hose connections for easy installation.
Manually controllable reset: After fire extinguishing, manual operation (e.g., rotating handwheel, opening reset ball valve) is required for reset to prevent accidental system shutdown.
Wide system compatibility: Suitable for deluge, pre-action, dry-pipe and other fire protection systems, improving reliability in various scenarios.

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Product Parameter

Material	Size	Testing Pressure
Brass	1/2″ - 4″	100% Tested with 0.6MPa - 0.8MPa by Air.
Pressure	Application	Function
Ordinary Temperature	Industrial Usage, Water Industrial Usage, Household Usage	Ddcv Double Lobe, Nrvr Silence, Sfcv Rubber Lobe, Nrvz Silence, Nrvg Silence

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FAQ

1: What is the MOQ for brass anti-reset devices?
The minimum order quantity is 200 pieces. It can be adjusted based on project scales (e.g., commercial building fire systems, industrial sprinkler upgrades) and cooperation intentions.
2: Do you provide customized services for brass anti-reset devices (e.g., locking force, sealing materials)?
Yes, we support customized production for specific needs:

• Locking force adjustment (e.g., 5–15 N for precise engagement);

• Sealing material upgrades (e.g., Viton seals for high-humidity environments);

• Special thread types (e.g., NPT, BSP, or custom fittings).
Contact our sales team for detailed consultation.
3: What are the delivery terms?
We usually adopt EXW, FOB terms. Flexible adjustments (e.g., CIF, DAP) can be made according to customer needs and shipping arrangements.

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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！