
DN300 Fire Sprinkler System Wet Type Fire Alarm Check Valves with FM. FM and UL Approved: Certified for fire protection systems with FM and UL approvals for safety compliance. High Pressure Resistance: Rated for 300psi working pressure, suitable for high-pressure industrial applications. Ductile Iron Construction: Body made of durable ductile iron with epoxy coating for corrosion resistance. Flexible Customization: Offers full customization, minor adjustments, and flexible options based on samples or designs. Flange Connection: Features ANSI/DIN flange connections for secure and standard industrial piping integration. Swing Check Structure: Swing type design ensures unidirectional flow control with NRV silence function. 100% Quality Inspection: Every finished product undergoes visual and functional inspection before shipping. Fast Lead Time: Average lead time within 15 workdays for both peak and off-season periods.