Industrial Carbon Steel Swing Check Valve (National Standard) for Water, Oil, Gas

Industrial Carbon Steel Swing Check Valve (National Standard) for Water, Oil, Gas. Automatic Backflow Prevention: Automatically opens and closes based on medium flow and gravity to prevent backflow. Wide Pressure Range: Supports nominal pressure from PN1.0 to PN16 for high-pressure applications. Customizable Material Combination: Body, inner components, and fasteners can be combined based on user requirements. Comprehensive Warranty Coverage: 12-month warranty from acceptance date with free repair or replacement for quality faults. Lifetime Technical Support: Provides lifetime technical support and spare parts at cost price after warranty. National Standard Compliance: Manufactured according to GB standards including GB/T12236 and GB/T12224. Extensive Size Range: Available in nominal diameters from DN50 to DN600 for various pipeline needs.