Fire Fighting Deluge Valves

Before installation, first confirm the valve model matches the fire protection design and check if the valve body, accessories (like gaskets, bolts), and connected pipes are intact (no cracks or corrosion). Inspect the installation site: ensure it has enough space for valve operation and maintenance, aligns with the pipeline layout (horizontal/vertical as required), and the surrounding area is free of flammable or obstructive materials. Also, verify that the water supply pressure and pipe diameter meet the valve's operating specifications to avoid subsequent performance issues.

Place the deluge valve on the pre-marked installation spot, ensuring it is horizontally or vertically fixed (per manufacturer guidelines) to prevent misalignment affecting water flow. Use galvanized bolts to secure the valve to the support bracket, tightening bolts evenly to avoid valve body deformation. Check the valve's inlet and outlet directions-confirm they match the pipeline flow direction (marked on the valve body) to ensure unobstructed water passage. After fixing, use a level to verify the valve is stable and not tilted, laying a solid foundation for subsequent connections.

Connect the valve's inlet to the main water supply pipe and the outlet to the deluge nozzle network using flanged connections. Install gaskets between flanges to enhance sealing, ensuring no gaps. Tighten flange bolts in a crisscross pattern to ensure uniform pressure and prevent water leakage. After connection, conduct a preliminary visual inspection: check if all joints are aligned, bolts are properly tightened, and there are no loose parts. Then, perform a low-pressure leak test (using water or air) to confirm no leaks at joints or the valve body.

Connect the valve's control system (e.g., electric/pneumatic actuators, fire detectors) to the main fire alarm system, ensuring signal transmission is smooth. Test the valve's opening and closing functions: trigger the detector or use the manual release device to check if the valve opens instantly and closes tightly when the fire signal is cleared. Verify the water flow rate and pressure at the nozzles to ensure they meet fire suppression requirements. Finally, clean the installation site, organize installation records, and label the valve (e.g., model, installation date) for future maintenance and inspection.