Sealing Performance Gate Butterfly Alarm Check Fire Hydrant Landing Signal Butterfly Extinguisher Valve. Elastic Gate Sealing: Ingenious design with elastic deformation ensures excellent sealing performance. Full-Bore Hidden Rod: Incorporates full-bore and hidden rod design for outstanding performance. Wide Size Range: Available in sizes from DN50 to DN300 for various applications. High Pressure Rating: Nominal working pressure 1.6MPa with strength test pressure up to 6.4MPa. Customization Available: Offers full customization, minor customization, and flexible options. OEM & ODM Services: Professional OEM and ODM services available for special specifications. Strict Quality Control: Pre-production samples and 100% final inspection before shipment. Advanced Manufacturing: Equipped with CNC lathes and automated testing systems for precision.