BTL / BFL
Cast Iron ; Ductile Iron ; Bronze ; Stainless Steel
Thread 1½'' to 2'' ; Flange 1½'' to 56''
0.3-4 kgf/cm2 ; 2-8 kgf/cm2 ; 5-13kgf/cm2
NBR ; Viton
Model BTL / BFL, Pilot Control Pressure Relief Valve maintain safe water supply pressure inside the pipe to prevent sudden increase of pressure that would damage the system by releasing exceeded pressure. Pressure Relief Valve is apply in Fire Protection Systems, specially Fire Pump system to maintain and protect system from over pressure.
Step 1: Open upstream valve.
Step 2: Loose the lock nut of the controller adjustment screw and turn adjusting screw counterclockwise until lowest outlet pressure.
Step 3: Pressure Gauge on the valve indicate inlet pressure.
Step 4: Adjust the controller adjustment screw clockwise to the pressure required.
Step 5: Fasten up lock nut.
In a fire pump system project in Taiwan, the client selected our pilot control pressure relief valve (Model BFL) to ensure safe and stable operation of the fire protection pipeline. This valve features a compact, no-conduit design, simplifying transportation, installation, and ongoing maintenance.
Designed specifically for fire protection systems—especially fire pump applications—this valve met the client's high standards for safety, responsiveness, and system integrity, demonstrating its reliable performance in a critical infrastructure environment.
Its main function is to release excess pressure from pipelines, pumps, and sprinkler systems, preventing overpressure that could damage equipment or compromise fire safety operations.
Fire pumps can generate sudden pressure surges during startup or flow fluctuations. The relief valve ensures safe operating pressure by instantly discharging excess pressure, protecting both the pump and connected fire protection equipment.
Yes. They maintain stable pressure for sprinkler networks and hydrant systems, ensuring reliable water flow during firefighting without damaging the piping or outlets.
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