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150lb 4inch Cast Stainless Steel Spring Wafer Check Valves

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150lb 4inch Cast Stainless Steel Spring Wafer Check Valves is a high-performance cast steel spring check valve, specially designed to meet the unidirectional flow requirements in industrial fluid control systems. This valve is made of 304 or 316 stainless steel, featuring excellent corrosion resistance and high strength, and is capable of adapting to a variety of complex working environments. Its unique spring design and thin structure ensure the reliability of the valve and the convenience of operation, and it is widely used in multiple industries such as petroleum, natural gas, chemical engineering, and water treatment.
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Product Features

  • Premium Materials: The valve body is made of 304 or 316 stainless steel, featuring high strength and excellent corrosion resistance to adapt to various complex working environments.

  • Spring Design: The unique spring design ensures the valve responds quickly under low pressure, achieving instant closure to prevent media backflow.

  • Thin-Type Structure: The thin-type structural design saves space, facilitating installation and maintenance—especially suitable for space-constrained scenarios.

  • High-Flow Design: The full-bore design reduces fluid resistance and improves flow efficiency, ensuring high-performance system operation.

  • Convenient Operation: No external power is required; the valve automatically opens and closes relying on the medium's own pressure, offering simple and reliable operation.

  • Multiple Standards Compliance: Meets international standards such as API 6D and ASME B16.34 to guarantee product quality and performance reliability.

  • Fire-Safe Design: Complies with API 607 fire safety standards, suitable for high-risk environments.

  • Anti-Static Design: Equipped with anti-static devices to ensure safety in flammable and explosive atmospheres.

Technical Parameters

  • Nominal Pressure: ANSI Class 150

  • Size Range: 4" (DN100)

  • Working Temperature: -29°C to 300°C

  • Applicable Media: Water, natural gas, oil, air, acidic liquids, etc.

  • Design Standards: API 6D, ASME B16.34

  • Connection Type: Flange Connection

  • Body Material: 304 or 316 Stainless Steel

  • Sealing Materials: PTFE, NBR, EPDM, etc.

  • Sealing Class: ANSI B16.104 Class VI

  • Inspection & Testing: API 598


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