
1'' to 4'' Ductile Iron NPT Thread Ball Check Valve One Way Valve for Liquid Medium Control. NPT Thread Connection: Features American standard taper pipe thread for secure pipeline integration. Anti-Backflow Performance: Ensures one-way flow to prevent pollution and equipment damage in high-pressure environments. Full Customization Capability: Offers design, casting, processing, assembly, and trademark customization services. Material Certification: Each product includes a dedicated material report with corresponding furnace number. Professional Technical Support: Dedicated team of 7 engineers provides professional answers and assembly drawings. Export Experience: Over 20 years of export experience with products sold to Europe, America, and Southeast Asia. Sample Service: Samples available with fee deductible after reaching a certain order quantity.