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Stainless Steel Vertical Thread Spring Check Valve
Features:
Strong Corrosion Resistance: Made of 304 or 316 stainless steel, it can resist the corrosion of various chemical media.
Quick Response: The spring device ensures that the valve can close quickly when the fluid stops flowing or flows in the reverse direction.
Multiple Threaded Connections: It provides multiple threaded connection methods such as NPT, BSP, and BSPT, making it convenient to connect with pipeline systems of different standards.
Good Sealing Performance: High-quality sealing materials are used to ensure that there is no leakage within the working pressure range of the valve.
Wide Range of Applications: It is applicable to various media such as water, oil, gas, weak acids, and weak alkalis.
Technical Specifications:
Size Range: 1/4"~2" (DN6~DN50)
Working Pressure: 1000WOG
Working Temperature: -20℃~200℃
Connection Method: Threaded connection (NPT, BSP, BSPT)
Sealing Materials: PTFE, FKM, etc.
Valve Body Material: 304 or 316 stainless steel.
Spring Material: Stainless steel spring with strong corrosion resistance.
Manufacturing Standards: Comply with international standards such as ANSI and ISO.
Working Principle:
Forward Flow: When the fluid enters the valve from the inlet end, the fluid pressure overcomes the resistance of the spring, lifts the valve disc from the valve seat, and the fluid passes through the valve smoothly.
Reverse Flow or Stopped Flow: When the fluid stops flowing or flows in the reverse direction, the elastic force of the spring pushes the valve disc back to the valve seat for a tight seal, preventing the reverse flow of the fluid. This design ensures that the valve can be reliably closed even under low pressure or no pressure conditions.
Application Fields:
Industrial Pipeline Systems: Used in industries such as petroleum, natural gas, and chemical engineering to prevent the reverse flow of fluid and protect the safety of equipment and systems.
Water Treatment Systems: Used in water supply, sewage treatment and other systems to prevent the backflow of water and ensure the safety of water quality.
Food and Beverage Industry: Used for the material transportation in the production process of food and beverages to ensure hygiene and safety.
Shipbuilding and Offshore Engineering: Used in the seawater systems, freshwater systems of ships, etc., to prevent the reverse flow of seawater or freshwater.
Building and Municipal Engineering: Used in building water supply and drainage systems to prevent the backflow of sewage and ensure hygienic conditions.
