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China Supplier Check Valve Sump Pump on Sale. High Pressure Capacity: Pressure range up to 420 bar / 6000 PSI for demanding hydraulic applications. Multiple Thread Options: Available with NPT, SAE, BSP, ORFS, and Metric threads to fit diverse systems. Durable Material Construction: Constructed from Carbon Steel or Stainless Steel with White Zinc or Zinc-Nickel coating. Comprehensive Certifications: Products meet ISO, DIN, and SAE standards including ISO Certification. OEM and ODM Services: Customization available for logo labeling, manufacturing from samples, and blueprints.