Durable Brass Drain Valve - High-Pressure Tolerance
The fire-fighting drain valve is a key auxiliary component in fire water supply systems. Its core function is to regularly discharge accumulated water, impurities, and air from the system, maintain stable pipeline pressure, prevent pipeline failure caused by freezing expansion, corrosion, or blockage, and ensure that fire-fighting systems (such as fire hydrants and automatic sprinkler systems) can supply water quickly and efficiently in case of fire. Suitable for various building, industrial, and municipal fire-fighting pipelines, it supports both manual and automatic operation modes to meet safety maintenance needs in different scenarios.
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CA-FIRE Brass Drain Valve
The main body is made of high-strength brass or ductile iron, featuring corrosion resistance and high-pressure resistance. It is adaptable to multiple working conditions and prevents freezing cracking or high-temperature deformation.
Sealing elements are made of food-grade nitrile rubber or fluororubber to ensure zero leakage and avoid pressure relief risks during long-term standby.
It is compatible with mainstream fire-fighting pipeline specifications, with optional connection methods (threaded/flanged) and flexible installation directions (horizontal/vertical).
Equipped with a built-in filter screen to intercept impurities such as sediment and rust, preventing blockage of fire sprinklers.
Manual models are fitted with anti-slip knobs, requiring low torque for opening/closing and facilitating emergency operations. Automatic models are equipped with temperature-sensing elements (for automatic opening at low temperatures) or pressure-sensing modules (for overpressure relief), eliminating the need for manual on-site monitoring.
Designed specifically for fire-fighting, it has much higher material and performance standards than ordinary pipeline drain valves, avoiding failure in emergency situations. Automatic models can handle unattended scenarios, reducing the risk of freezing and overpressure.
Corrosion-resistant materials extend service life; the built-in filter screen is easy to disassemble and clean, eliminating the need for frequent replacement of parts. Manual operation is simple, allowing daily maintenance without professional personnel.
Compatible with mainstream fire-fighting pipeline types; high-temperature, low-temperature, and explosion-proof models are available to adapt to special working conditions.
The sealing element adopts a double-seal structure, ensuring no leakage during long-term closure. This maintains stable pressure in the fire-fighting pipeline and prevents insufficient water supply during fire suppression due to pressure relief.

Building Fire-Fighting Systems
Used in fire hydrant pipelines and automatic sprinkler systems of high-rise residential buildings and commercial complexes for winter drainage (to prevent freezing) and daily pipeline air release (to avoid air resistance affecting water supply efficiency).
Installed at the low points of fire-fighting pipelines in underground garages and equipment rooms to discharge accumulated condensed water and prevent internal pipeline corrosion.
Industrial Fire-Fighting Scenarios
Applied in explosion-proof fire-fighting pipelines of chemical workshops and oil-gas warehouses, with corrosion-resistant materials to prevent valve corrosion by media.
Used in fire-fighting systems of high-temperature areas in power plants and steel mills, withstanding high-temperature working conditions to meet emergency drainage needs.
Installed at the end of municipal fire hydrant pipelines for regular drainage and maintenance, ensuring fire hydrants are ready for use at any time.
Used in fire-fighting systems of cold storage and low-temperature warehouses; automatic models can open automatically to discharge water in low-temperature environments, preventing pipeline freezing and cracking.



Every brass drain valve undergoes strict quality testing-including pressure leak tests, material composition checks, and mechanical performance evaluations-to comply with international industrial standards (e.g., ISO 9001, ASME B16.34). We also offer customization options (e.g., pressure ratings, connection sizes, actuation types) to align with your specific system requirements, ensuring seamless integration and long-term reliability.
For industrial operations where performance, safety, and durability cannot be compromised, this brass drain valve is the trusted choice for high-pressure water control and efficient drainage.
Q: What is the difference between a fire-fighting drain valve and an ordinary pipeline drain valve?
A: Fire-fighting drain valves require higher performance standards and weather resistance, with zero leakage required for sealing (to avoid pipeline pressure relief). Some models have explosion-proof or low-temperature automatic opening functions. Ordinary pipeline drain valves focus on daily drainage, with lower performance standards that cannot meet the safety needs of fire-fighting systems.
A: Automatic models are recommended for low-temperature areas and unattended scenarios (e.g., underground pipelines) to prevent freezing automatically. Manual models are suitable for small buildings or scenarios with regular manual maintenance, as they are more cost-effective and easy to operate directly.
A: First, close the upstream control valve, relieve pressure, and then check if the sealing element is aged or contaminated with impurities. If the sealing element is aged, replace it with a nitrile/fluororubber sealing element of the same model. If there are impurities, clean the valve core and valve seat before reinstalling.
Q: How often should the fire-fighting drain valve be maintained?
A: Conduct daily maintenance once every quarter (manually open the valve to drain for 1-2 minutes to check flexibility). Conduct annual maintenance, including disassembling and cleaning the filter screen, testing sealing performance, and checking the sensitivity of automatic elements. Maintenance records must be archived to cooperate with fire department annual inspections.
A: It is recommended to install the valve according to the "water flow direction" mark on the valve body to avoid sealing failure due to reverse installation. For flanged connections, tighten the bolts evenly to prevent valve body deformation.
NO.8, YUANFENG ROAD, MEIYUAN VILLAGE, KANGMEI TOWN, NANAN CITY, QUANZHOU CITY, FUJIAN CHINA
+86 18160950625
miki@ca-fire.com

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